From e50a7a1a42335243c94eeea4a8d23413cb02370d Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 10 Jan 2012 16:12:46 +0400 Subject: NFS: make NFS client allocated per network namespace context This patch adds new net variable to nfs_client structure. This variable is set on NFS client creation and cheched during matching NFS client search. Initially current->nsproxy->net_ns is used as network namespace owner for new NFS client to create. This network namespace pointer is set during mount options parsing and thus can be passed from user-spave utils in future if will be necessary. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 31778f74357..ca016fe4460 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -135,6 +135,7 @@ struct nfs_client_initdata { const struct nfs_rpc_ops *rpc_ops; int proto; u32 minorversion; + struct net *net; }; /* @@ -189,6 +190,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ if (!IS_ERR(cred)) clp->cl_machine_cred = cred; nfs_fscache_get_client_cookie(clp); + clp->net = cl_init->net; return clp; @@ -481,6 +483,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat /* Match the full socket address */ if (!nfs_sockaddr_cmp(sap, clap)) continue; + /* Match network namespace */ + if (clp->net != data->net) + continue; atomic_inc(&clp->cl_count); return clp; @@ -831,6 +836,7 @@ static int nfs_init_server(struct nfs_server *server, .addrlen = data->nfs_server.addrlen, .rpc_ops = &nfs_v2_clientops, .proto = data->nfs_server.protocol, + .net = data->net, }; struct rpc_timeout timeparms; struct nfs_client *clp; @@ -1393,7 +1399,7 @@ static int nfs4_set_client(struct nfs_server *server, const char *ip_addr, rpc_authflavor_t authflavour, int proto, const struct rpc_timeout *timeparms, - u32 minorversion) + u32 minorversion, struct net *net) { struct nfs_client_initdata cl_init = { .hostname = hostname, @@ -1402,6 +1408,7 @@ static int nfs4_set_client(struct nfs_server *server, .rpc_ops = &nfs_v4_clientops, .proto = proto, .minorversion = minorversion, + .net = net, }; struct nfs_client *clp; int error; @@ -1453,6 +1460,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, .rpc_ops = &nfs_v4_clientops, .proto = ds_proto, .minorversion = mds_clp->cl_minorversion, + .net = mds_clp->net, }; struct rpc_timeout ds_timeout = { .to_initval = 15 * HZ, @@ -1580,7 +1588,8 @@ static int nfs4_init_server(struct nfs_server *server, data->auth_flavors[0], data->nfs_server.protocol, &timeparms, - data->minorversion); + data->minorversion, + data->net); if (error < 0) goto error; @@ -1677,7 +1686,8 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, data->authflavor, parent_server->client->cl_xprt->prot, parent_server->client->cl_timeout, - parent_client->cl_mvops->minor_version); + parent_client->cl_mvops->minor_version, + parent_client->net); if (error < 0) goto error; -- cgit v1.2.3-70-g09d2 From 6d59b8d599d594bc314026c6856424fe49df5513 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 10 Jan 2012 16:12:54 +0400 Subject: NFS: pass NFS client owner network namespace to RPC client creation routine This patch replaces static "init_net" with nfs_client->net pointer in RPC client creation calls. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 +- fs/nfs/internal.h | 1 + fs/nfs/mount_clnt.c | 4 ++-- fs/nfs/super.c | 1 + 4 files changed, 5 insertions(+), 3 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index ca016fe4460..64815b72540 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -647,7 +647,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, { struct rpc_clnt *clnt = NULL; struct rpc_create_args args = { - .net = &init_net, + .net = clp->net, .protocol = clp->cl_proto, .address = (struct sockaddr *)&clp->cl_addr, .addrsize = clp->cl_addrlen, diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 02fb2001a28..d602188f889 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -138,6 +138,7 @@ struct nfs_mount_request { int noresvport; unsigned int *auth_flav_len; rpc_authflavor_t *auth_flavs; + struct net *net; }; extern int nfs_mount(struct nfs_mount_request *info); diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index d4c2d6b7507..4fbe3a8e5e6 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -153,7 +153,7 @@ int nfs_mount(struct nfs_mount_request *info) .rpc_resp = &result, }; struct rpc_create_args args = { - .net = &init_net, + .net = info->net, .protocol = info->protocol, .address = info->sap, .addrsize = info->salen, @@ -225,7 +225,7 @@ void nfs_umount(const struct nfs_mount_request *info) .to_retries = 2, }; struct rpc_create_args args = { - .net = &init_net, + .net = info->net, .protocol = IPPROTO_UDP, .address = info->sap, .addrsize = info->salen, diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 73aa75649bf..e45feb0fee5 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1625,6 +1625,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args, .noresvport = args->flags & NFS_MOUNT_NORESVPORT, .auth_flav_len = &server_authlist_len, .auth_flavs = server_authlist, + .net = args->net, }; int status; -- cgit v1.2.3-70-g09d2 From eee17325f1dfbe004f1475743bab9e3d050d00f5 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 10 Jan 2012 16:13:19 +0400 Subject: NFS: idmap PipeFS notifier introduced v2: 1) Added "nfs_idmap_init" and "nfs_idmap_quit" definitions for kernels built without CONFIG_NFS_V4 option set. This patch subscribes NFS clients to RPC pipefs notifications. Idmap notifier is registering on NFS module load. This notifier callback is responsible for creation/destruction of PipeFS idmap pipe dentry for NFS4 clients. Since ipdmap pipe is created in rpc client pipefs directory, we have make sure, that this directory has been created already. IOW RPC client notifier callback has been called already. To achive this, PipeFS notifier priorities has been introduced (RPC clients notifier priority is greater than NFS idmap one). But this approach gives another problem: unlink for RPC client directory will be called before NFS idmap pipe unlink on UMOUNT event and will fail, because directory is not empty. The solution, introduced in this patch, is to try to remove client directory once again after idmap pipe was unlinked. This looks like ugly hack, so probably it should be replaced in some more elegant way. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 4 +- fs/nfs/idmap.c | 75 ++++++++++++++++++++++++++++++++++++++ fs/nfs/internal.h | 4 ++ include/linux/nfs_idmap.h | 21 ++++++----- include/linux/sunrpc/rpc_pipe_fs.h | 7 ++++ net/sunrpc/clnt.c | 1 + net/sunrpc/rpc_pipe.c | 16 ++++++++ 7 files changed, 116 insertions(+), 12 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 64815b72540..ca9a4aa38df 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -52,8 +52,8 @@ #define NFSDBG_FACILITY NFSDBG_CLIENT -static DEFINE_SPINLOCK(nfs_client_lock); -static LIST_HEAD(nfs_client_list); +DEFINE_SPINLOCK(nfs_client_lock); +LIST_HEAD(nfs_client_list); static LIST_HEAD(nfs_volume_list); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 769274ed51c..ff084d258c4 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -377,6 +377,7 @@ int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, #include #include "nfs4_fs.h" +#include "internal.h" #define IDMAP_HASH_SZ 128 @@ -530,6 +531,80 @@ nfs_idmap_delete(struct nfs_client *clp) kfree(idmap); } +static int __rpc_pipefs_event(struct nfs_client *clp, unsigned long event, + struct super_block *sb) +{ + int err = 0; + + switch (event) { + case RPC_PIPEFS_MOUNT: + BUG_ON(clp->cl_rpcclient->cl_dentry == NULL); + err = __nfs_idmap_register(clp->cl_rpcclient->cl_dentry, + clp->cl_idmap, + clp->cl_idmap->idmap_pipe); + break; + case RPC_PIPEFS_UMOUNT: + if (clp->cl_idmap->idmap_pipe) { + struct dentry *parent; + + parent = clp->cl_idmap->idmap_pipe->dentry->d_parent; + __nfs_idmap_unregister(clp->cl_idmap->idmap_pipe); + /* + * Note: This is a dirty hack. SUNRPC hook has been + * called already but simple_rmdir() call for the + * directory returned with error because of idmap pipe + * inside. Thus now we have to remove this directory + * here. + */ + if (rpc_rmdir(parent)) + printk(KERN_ERR "%s: failed to remove clnt dir!\n", __func__); + } + break; + default: + printk(KERN_ERR "%s: unknown event: %ld\n", __func__, event); + return -ENOTSUPP; + } + return err; +} + +static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, + void *ptr) +{ + struct super_block *sb = ptr; + struct nfs_client *clp; + int error = 0; + + spin_lock(&nfs_client_lock); + list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + if (clp->net != sb->s_fs_info) + continue; + if (clp->rpc_ops != &nfs_v4_clientops) + continue; + error = __rpc_pipefs_event(clp, event, sb); + if (error) + break; + } + spin_unlock(&nfs_client_lock); + return error; +} + +#define PIPEFS_NFS_PRIO 1 + +static struct notifier_block nfs_idmap_block = { + .notifier_call = rpc_pipefs_event, + .priority = SUNRPC_PIPEFS_NFS_PRIO, +}; + +int nfs_idmap_init(void) +{ + return rpc_pipefs_notifier_register(&nfs_idmap_block); +} + +void nfs_idmap_quit(void) +{ + rpc_pipefs_notifier_unregister(&nfs_idmap_block); +} + /* * Helper routines for manipulating the hashtable */ diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index d602188f889..2b9836fe443 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -182,6 +182,10 @@ static inline void nfs_fs_proc_exit(void) { } #endif +#ifdef CONFIG_NFS_V4 +extern spinlock_t nfs_client_lock; +extern struct list_head nfs_client_list; +#endif /* nfs4namespace.c */ #ifdef CONFIG_NFS_V4 diff --git a/include/linux/nfs_idmap.h b/include/linux/nfs_idmap.h index 308c1887701..3c9eeb7da64 100644 --- a/include/linux/nfs_idmap.h +++ b/include/linux/nfs_idmap.h @@ -69,31 +69,32 @@ struct nfs_server; struct nfs_fattr; struct nfs4_string; -#ifdef CONFIG_NFS_USE_NEW_IDMAPPER - +#ifdef CONFIG_NFS_V4 int nfs_idmap_init(void); void nfs_idmap_quit(void); - -static inline int nfs_idmap_new(struct nfs_client *clp) +#else +static inline int nfs_idmap_init(void) { return 0; } -static inline void nfs_idmap_delete(struct nfs_client *clp) -{ -} +static inline void nfs_idmap_quit(void) +{} +#endif -#else /* CONFIG_NFS_USE_NEW_IDMAPPER not set */ +#ifdef CONFIG_NFS_USE_NEW_IDMAPPER -static inline int nfs_idmap_init(void) +static inline int nfs_idmap_new(struct nfs_client *clp) { return 0; } -static inline void nfs_idmap_quit(void) +static inline void nfs_idmap_delete(struct nfs_client *clp) { } +#else /* CONFIG_NFS_USE_NEW_IDMAPPER not set */ + int nfs_idmap_new(struct nfs_client *); void nfs_idmap_delete(struct nfs_client *); diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h index 0d1f748f76d..ca32ebd14c1 100644 --- a/include/linux/sunrpc/rpc_pipe_fs.h +++ b/include/linux/sunrpc/rpc_pipe_fs.h @@ -49,6 +49,11 @@ RPC_I(struct inode *inode) return container_of(inode, struct rpc_inode, vfs_inode); } +enum { + SUNRPC_PIPEFS_NFS_PRIO, + SUNRPC_PIPEFS_RPC_PRIO, +}; + extern int rpc_pipefs_notifier_register(struct notifier_block *); extern void rpc_pipefs_notifier_unregister(struct notifier_block *); @@ -78,6 +83,8 @@ extern struct dentry *rpc_create_cache_dir(struct dentry *, struct cache_detail *); extern void rpc_remove_cache_dir(struct dentry *); +extern int rpc_rmdir(struct dentry *dentry); + struct rpc_pipe *rpc_mkpipe_data(const struct rpc_pipe_ops *ops, int flags); void rpc_destroy_pipe_data(struct rpc_pipe *pipe); extern struct dentry *rpc_mkpipe_dentry(struct dentry *, const char *, void *, diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index ed7c22de931..4c684801716 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -222,6 +222,7 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, static struct notifier_block rpc_clients_block = { .notifier_call = rpc_pipefs_event, + .priority = SUNRPC_PIPEFS_RPC_PRIO, }; int rpc_clients_notifier_register(void) diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 6b417fcabdb..bae4e71d866 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -616,6 +616,22 @@ static int __rpc_rmdir(struct inode *dir, struct dentry *dentry) return ret; } +int rpc_rmdir(struct dentry *dentry) +{ + struct dentry *parent; + struct inode *dir; + int error; + + parent = dget_parent(dentry); + dir = parent->d_inode; + mutex_lock_nested(&dir->i_mutex, I_MUTEX_PARENT); + error = __rpc_rmdir(dir, dentry); + mutex_unlock(&dir->i_mutex); + dput(parent); + return error; +} +EXPORT_SYMBOL_GPL(rpc_rmdir); + static int __rpc_unlink(struct inode *dir, struct dentry *dentry) { int ret; -- cgit v1.2.3-70-g09d2 From 9157c31dd610a127bc6f01bc1953cf8b80382040 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:24 -0500 Subject: NFSv4: Replace state_owner->so_owner_id with an ida based allocator We're unlikely to ever need more than 2^31 simultaneous open owners, so let's replace the custom allocator with the generic ida allocator. Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 ++ fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4proc.c | 4 ++-- fs/nfs/nfs4state.c | 17 ++++++++++++----- include/linux/nfs_fs_sb.h | 3 ++- 5 files changed, 19 insertions(+), 9 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index ca9a4aa38df..8d1739d3424 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1092,6 +1092,7 @@ static struct nfs_server *nfs_alloc_server(void) return NULL; } + ida_init(&server->openowner_id); pnfs_init_server(server); return server; @@ -1117,6 +1118,7 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); + ida_destroy(&server->openowner_id); nfs_free_iostats(server->io_stats); bdi_destroy(&server->backing_dev_info); kfree(server); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 654b091644c..091b679747e 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -92,7 +92,6 @@ struct nfs_unique_id { * semantics by allowing the server to identify replayed requests. */ struct nfs4_state_owner { - struct nfs_unique_id so_owner_id; struct nfs_server *so_server; struct list_head so_lru; unsigned long so_expires; @@ -106,6 +105,7 @@ struct nfs4_state_owner { struct list_head so_states; struct nfs_seqid_counter so_seqid; struct rpc_sequence so_sequence; + int so_owner_id; }; enum { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 53ef365f437..1dd2e407a90 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -815,7 +815,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); p->o_arg.clientid = server->nfs_client->cl_clientid; - p->o_arg.id = sp->so_owner_id.id; + p->o_arg.id = sp->so_owner_id; p->o_arg.name = &dentry->d_name; p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; @@ -1440,7 +1440,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) rcu_read_unlock(); } /* Update sequence id. */ - data->o_arg.id = sp->so_owner_id.id; + data->o_arg.id = sp->so_owner_id; data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a8a42a677d8..8472707286f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -405,6 +405,7 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) struct rb_node **p = &server->state_owners.rb_node, *parent = NULL; struct nfs4_state_owner *sp; + int err; while (*p != NULL) { parent = *p; @@ -421,8 +422,9 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) return sp; } } - nfs_alloc_unique_id_locked(&server->openowner_id, - &new->so_owner_id, 1, 64); + err = ida_get_new(&server->openowner_id, &new->so_owner_id); + if (err) + return ERR_PTR(err); rb_link_node(&new->so_server_node, parent, p); rb_insert_color(&new->so_server_node, &server->state_owners); return new; @@ -435,7 +437,7 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) if (!RB_EMPTY_NODE(&sp->so_server_node)) rb_erase(&sp->so_server_node, &server->state_owners); - nfs_free_unique_id(&server->openowner_id, &sp->so_owner_id); + ida_remove(&server->openowner_id, sp->so_owner_id); } /* @@ -534,8 +536,13 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, new = nfs4_alloc_state_owner(server, cred, gfp_flags); if (new == NULL) goto out; - sp = nfs4_insert_state_owner_locked(new); - spin_unlock(&clp->cl_lock); + do { + if (ida_pre_get(&server->openowner_id, gfp_flags) == 0) + break; + spin_lock(&clp->cl_lock); + sp = nfs4_insert_state_owner_locked(new); + spin_unlock(&clp->cl_lock); + } while (sp == ERR_PTR(-EAGAIN)); if (sp != new) nfs4_free_state_owner(new); out: diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index e0863d35f75..645537e18bd 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -3,6 +3,7 @@ #include #include +#include #include #include #include @@ -151,9 +152,9 @@ struct nfs_server { /* the following fields are protected by nfs_client->cl_lock */ struct rb_root state_owners; - struct rb_root openowner_id; struct rb_root lockowner_id; #endif + struct ida openowner_id; struct list_head state_owners_lru; struct list_head layouts; struct list_head delegations; -- cgit v1.2.3-70-g09d2 From d2d7ce28a2f8ec6ca2a49145e643d2e3c7d21ba3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 17 Jan 2012 22:04:25 -0500 Subject: NFSv4: Replace lock_owner->ld_id with an ida based allocator Again, We're unlikely to ever need more than 2^31 simultaneous lock owners, so let's replace the custom allocator. Now that there are no more users, we can also get rid of the custom allocator code. Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 ++ fs/nfs/nfs4_fs.h | 7 +---- fs/nfs/nfs4proc.c | 6 ++-- fs/nfs/nfs4state.c | 74 +++++------------------------------------------ include/linux/nfs_fs_sb.h | 2 +- 5 files changed, 15 insertions(+), 76 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 8d1739d3424..df60d9971b9 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1093,6 +1093,7 @@ static struct nfs_server *nfs_alloc_server(void) } ida_init(&server->openowner_id); + ida_init(&server->lockowner_id); pnfs_init_server(server); return server; @@ -1118,6 +1119,7 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); + ida_destroy(&server->lockowner_id); ida_destroy(&server->openowner_id); nfs_free_iostats(server->io_stats); bdi_destroy(&server->backing_dev_info); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 091b679747e..b23cb0cda63 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -81,11 +81,6 @@ static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status seqid->flags |= NFS_SEQID_CONFIRMED; } -struct nfs_unique_id { - struct rb_node rb_node; - __u64 id; -}; - /* * NFS4 state_owners and lock_owners are simply labels for ordered * sequences of RPC calls. Their sole purpose is to provide once-only @@ -145,9 +140,9 @@ struct nfs4_lock_state { struct nfs4_state * ls_state; /* Pointer to open state */ #define NFS_LOCK_INITIALIZED 1 int ls_flags; + int ls_id; struct nfs_seqid_counter ls_seqid; struct rpc_sequence ls_sequence; - struct nfs_unique_id ls_id; nfs4_stateid ls_stateid; atomic_t ls_count; struct nfs4_lock_owner ls_owner; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1dd2e407a90..9c77af90096 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4017,7 +4017,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock if (status != 0) goto out; lsp = request->fl_u.nfs4_fl.owner; - arg.lock_owner.id = lsp->ls_id.id; + arg.lock_owner.id = lsp->ls_id; arg.lock_owner.s_dev = server->s_dev; status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); switch (status) { @@ -4262,7 +4262,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, goto out_free_seqid; p->arg.lock_stateid = &lsp->ls_stateid; p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; - p->arg.lock_owner.id = lsp->ls_id.id; + p->arg.lock_owner.id = lsp->ls_id; p->arg.lock_owner.s_dev = server->s_dev; p->res.lock_seqid = p->arg.lock_seqid; p->lsp = lsp; @@ -4679,7 +4679,7 @@ void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) if (!args) return; args->lock_owner.clientid = server->nfs_client->cl_clientid; - args->lock_owner.id = lsp->ls_id.id; + args->lock_owner.id = lsp->ls_id; args->lock_owner.s_dev = server->s_dev; msg.rpc_argp = args; rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 8472707286f..5abf23615bc 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -317,62 +317,6 @@ out: return cred; } -static void nfs_alloc_unique_id_locked(struct rb_root *root, - struct nfs_unique_id *new, - __u64 minval, int maxbits) -{ - struct rb_node **p, *parent; - struct nfs_unique_id *pos; - __u64 mask = ~0ULL; - - if (maxbits < 64) - mask = (1ULL << maxbits) - 1ULL; - - /* Ensure distribution is more or less flat */ - get_random_bytes(&new->id, sizeof(new->id)); - new->id &= mask; - if (new->id < minval) - new->id += minval; -retry: - p = &root->rb_node; - parent = NULL; - - while (*p != NULL) { - parent = *p; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - - if (new->id < pos->id) - p = &(*p)->rb_left; - else if (new->id > pos->id) - p = &(*p)->rb_right; - else - goto id_exists; - } - rb_link_node(&new->rb_node, parent, p); - rb_insert_color(&new->rb_node, root); - return; -id_exists: - for (;;) { - new->id++; - if (new->id < minval || (new->id & mask) != new->id) { - new->id = minval; - break; - } - parent = rb_next(parent); - if (parent == NULL) - break; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - if (new->id < pos->id) - break; - } - goto retry; -} - -static void nfs_free_unique_id(struct rb_root *root, struct nfs_unique_id *id) -{ - rb_erase(&id->rb_node, root); -} - static struct nfs4_state_owner * nfs4_find_state_owner_locked(struct nfs_server *server, struct rpc_cred *cred) { @@ -800,7 +744,6 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f { struct nfs4_lock_state *lsp; struct nfs_server *server = state->owner->so_server; - struct nfs_client *clp = server->nfs_client; lsp = kzalloc(sizeof(*lsp), GFP_NOFS); if (lsp == NULL) @@ -820,24 +763,23 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f lsp->ls_owner.lo_u.posix_owner = fl_owner; break; default: - kfree(lsp); - return NULL; + goto out_free; } - spin_lock(&clp->cl_lock); - nfs_alloc_unique_id_locked(&server->lockowner_id, &lsp->ls_id, 1, 64); - spin_unlock(&clp->cl_lock); + lsp->ls_id = ida_simple_get(&server->lockowner_id, 0, 0, GFP_NOFS); + if (lsp->ls_id < 0) + goto out_free; INIT_LIST_HEAD(&lsp->ls_locks); return lsp; +out_free: + kfree(lsp); + return NULL; } static void nfs4_free_lock_state(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; - struct nfs_client *clp = server->nfs_client; - spin_lock(&clp->cl_lock); - nfs_free_unique_id(&server->lockowner_id, &lsp->ls_id); - spin_unlock(&clp->cl_lock); + ida_simple_remove(&server->lockowner_id, lsp->ls_id); rpc_destroy_wait_queue(&lsp->ls_sequence.wait); kfree(lsp); } diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 645537e18bd..c23469308b8 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -152,9 +152,9 @@ struct nfs_server { /* the following fields are protected by nfs_client->cl_lock */ struct rb_root state_owners; - struct rb_root lockowner_id; #endif struct ida openowner_id; + struct ida lockowner_id; struct list_head state_owners_lru; struct list_head layouts; struct list_head delegations; -- cgit v1.2.3-70-g09d2 From babea479b75a9ea3d84ace6d880513e18397a8bb Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 20 Jan 2012 17:19:56 +0400 Subject: NFS: remove unused nfs4_find_client_no_ident function Looks like this function survived after some cleanup patch without a reason. Now it's not called or referenced and I believe, that it can be simply removed. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 27 --------------------------- fs/nfs/internal.h | 1 - 2 files changed, 28 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index df60d9971b9..34c8d1cbf06 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1196,33 +1196,6 @@ error: } #ifdef CONFIG_NFS_V4 -/* - * NFSv4.0 callback thread helper - * - * Find a client by IP address, protocol version, and minorversion - * - * Called from the pg_authenticate method. The callback identifier - * is not used as it has not been decoded. - * - * Returns NULL if no such client - */ -struct nfs_client * -nfs4_find_client_no_ident(const struct sockaddr *addr) -{ - struct nfs_client *clp; - - spin_lock(&nfs_client_lock); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { - if (nfs4_cb_match_client(addr, clp, 0) == false) - continue; - atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); - return clp; - } - spin_unlock(&nfs_client_lock); - return NULL; -} - /* * NFSv4.0 callback thread helper * diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 2b9836fe443..eda4cde40fb 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -149,7 +149,6 @@ extern struct rpc_program nfs_program; extern void nfs_cleanup_cb_ident_idr(void); extern void nfs_put_client(struct nfs_client *); -extern struct nfs_client *nfs4_find_client_no_ident(const struct sockaddr *); extern struct nfs_client *nfs4_find_client_ident(int); extern struct nfs_client * nfs4_find_client_sessionid(const struct sockaddr *, struct nfs4_sessionid *); -- cgit v1.2.3-70-g09d2 From a613fa168afc19179a7547fbba45644c5b6912bf Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 20 Jan 2012 13:53:56 -0500 Subject: SUNRPC: constify the rpc_program Signed-off-by: Trond Myklebust --- fs/lockd/clnt4xdr.c | 2 +- fs/lockd/clntxdr.c | 8 ++++---- fs/lockd/mon.c | 8 ++++---- fs/nfs/client.c | 8 ++++---- fs/nfs/internal.h | 2 +- fs/nfs/mount_clnt.c | 10 +++++----- fs/nfs/nfs2xdr.c | 2 +- fs/nfs/nfs3xdr.c | 4 ++-- fs/nfs/nfs4xdr.c | 2 +- fs/nfsd/nfs4callback.c | 6 +++--- include/linux/lockd/lockd.h | 2 +- include/linux/lockd/xdr4.h | 2 +- include/linux/nfs_xdr.h | 10 +++++----- include/linux/sunrpc/clnt.h | 8 ++++---- include/linux/sunrpc/stats.h | 6 +++--- net/sunrpc/clnt.c | 8 ++++---- net/sunrpc/rpcb_clnt.c | 20 ++++++++++---------- 17 files changed, 54 insertions(+), 54 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c index f848b52c67b..3ddcbb1c0a4 100644 --- a/fs/lockd/clnt4xdr.c +++ b/fs/lockd/clnt4xdr.c @@ -598,7 +598,7 @@ static struct rpc_procinfo nlm4_procedures[] = { PROC(GRANTED_RES, res, norep), }; -struct rpc_version nlm_version4 = { +const struct rpc_version nlm_version4 = { .number = 4, .nrprocs = ARRAY_SIZE(nlm4_procedures), .procs = nlm4_procedures, diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c index 180ac34feb9..3d35e3e80c1 100644 --- a/fs/lockd/clntxdr.c +++ b/fs/lockd/clntxdr.c @@ -596,19 +596,19 @@ static struct rpc_procinfo nlm_procedures[] = { PROC(GRANTED_RES, res, norep), }; -static struct rpc_version nlm_version1 = { +static const struct rpc_version nlm_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(nlm_procedures), .procs = nlm_procedures, }; -static struct rpc_version nlm_version3 = { +static const struct rpc_version nlm_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(nlm_procedures), .procs = nlm_procedures, }; -static struct rpc_version *nlm_versions[] = { +static const struct rpc_version *nlm_versions[] = { [1] = &nlm_version1, [3] = &nlm_version3, #ifdef CONFIG_LOCKD_V4 @@ -618,7 +618,7 @@ static struct rpc_version *nlm_versions[] = { static struct rpc_stat nlm_rpc_stats; -struct rpc_program nlm_program = { +const struct rpc_program nlm_program = { .name = "lockd", .number = NLM_PROGRAM, .nrvers = ARRAY_SIZE(nlm_versions), diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index 65ba36b80a9..c196030e530 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -47,7 +47,7 @@ struct nsm_res { u32 state; }; -static struct rpc_program nsm_program; +static const struct rpc_program nsm_program; static LIST_HEAD(nsm_handles); static DEFINE_SPINLOCK(nsm_lock); @@ -534,19 +534,19 @@ static struct rpc_procinfo nsm_procedures[] = { }, }; -static struct rpc_version nsm_version1 = { +static const struct rpc_version nsm_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(nsm_procedures), .procs = nsm_procedures }; -static struct rpc_version * nsm_version[] = { +static const struct rpc_version *nsm_version[] = { [1] = &nsm_version1, }; static struct rpc_stat nsm_stats; -static struct rpc_program nsm_program = { +static const struct rpc_program nsm_program = { .name = "statd", .number = NSM_PROGRAM, .nrvers = ARRAY_SIZE(nsm_version), diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 34c8d1cbf06..98af1cb28ee 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -89,7 +89,7 @@ static bool nfs4_disable_idmapping = true; /* * RPC cruft for NFS */ -static struct rpc_version *nfs_version[5] = { +static const struct rpc_version *nfs_version[5] = { [2] = &nfs_version2, #ifdef CONFIG_NFS_V3 [3] = &nfs_version3, @@ -99,7 +99,7 @@ static struct rpc_version *nfs_version[5] = { #endif }; -struct rpc_program nfs_program = { +const struct rpc_program nfs_program = { .name = "nfs", .number = NFS_PROGRAM, .nrvers = ARRAY_SIZE(nfs_version), @@ -115,11 +115,11 @@ struct rpc_stat nfs_rpcstat = { #ifdef CONFIG_NFS_V3_ACL static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program }; -static struct rpc_version * nfsacl_version[] = { +static const struct rpc_version *nfsacl_version[] = { [3] = &nfsacl_version3, }; -struct rpc_program nfsacl_program = { +const struct rpc_program nfsacl_program = { .name = "nfsacl", .number = NFS_ACL_PROGRAM, .nrvers = ARRAY_SIZE(nfsacl_version), diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index eda4cde40fb..cdb121d3c6f 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -145,7 +145,7 @@ extern int nfs_mount(struct nfs_mount_request *info); extern void nfs_umount(const struct nfs_mount_request *info); /* client.c */ -extern struct rpc_program nfs_program; +extern const struct rpc_program nfs_program; extern void nfs_cleanup_cb_ident_idr(void); extern void nfs_put_client(struct nfs_client *); diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index 4fbe3a8e5e6..b37ca34af90 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -67,7 +67,7 @@ enum { MOUNTPROC3_EXPORT = 5, }; -static struct rpc_program mnt_program; +static const struct rpc_program mnt_program; /* * Defined by OpenGroup XNFS Version 3W, chapter 8 @@ -488,19 +488,19 @@ static struct rpc_procinfo mnt3_procedures[] = { }; -static struct rpc_version mnt_version1 = { +static const struct rpc_version mnt_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(mnt_procedures), .procs = mnt_procedures, }; -static struct rpc_version mnt_version3 = { +static const struct rpc_version mnt_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(mnt3_procedures), .procs = mnt3_procedures, }; -static struct rpc_version *mnt_version[] = { +static const struct rpc_version *mnt_version[] = { NULL, &mnt_version1, NULL, @@ -509,7 +509,7 @@ static struct rpc_version *mnt_version[] = { static struct rpc_stat mnt_stats; -static struct rpc_program mnt_program = { +static const struct rpc_program mnt_program = { .name = "mount", .number = NFS_MNT_PROGRAM, .nrvers = ARRAY_SIZE(mnt_version), diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 792cb13a430..1f56000fabb 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -1150,7 +1150,7 @@ struct rpc_procinfo nfs_procedures[] = { PROC(STATFS, fhandle, statfsres, 0), }; -struct rpc_version nfs_version2 = { +const struct rpc_version nfs_version2 = { .number = 2, .nrprocs = ARRAY_SIZE(nfs_procedures), .procs = nfs_procedures diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 183c6b123d0..a77cc9a3ce5 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -2461,7 +2461,7 @@ struct rpc_procinfo nfs3_procedures[] = { PROC(COMMIT, commit, commit, 5), }; -struct rpc_version nfs_version3 = { +const struct rpc_version nfs_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(nfs3_procedures), .procs = nfs3_procedures @@ -2489,7 +2489,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = { }, }; -struct rpc_version nfsacl_version3 = { +const struct rpc_version nfsacl_version3 = { .number = 3, .nrprocs = sizeof(nfs3_acl_procedures)/ sizeof(nfs3_acl_procedures[0]), diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 95e92e43840..4633d405a94 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -7109,7 +7109,7 @@ struct rpc_procinfo nfs4_procedures[] = { #endif /* CONFIG_NFS_V4_1 */ }; -struct rpc_version nfs_version4 = { +const struct rpc_version nfs_version4 = { .number = 4, .nrprocs = ARRAY_SIZE(nfs4_procedures), .procs = nfs4_procedures diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 426ccb17165..0e262f32ac4 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -605,18 +605,18 @@ static struct rpc_version nfs_cb_version4 = { .procs = nfs4_cb_procedures }; -static struct rpc_version *nfs_cb_version[] = { +static const struct rpc_version *nfs_cb_version[] = { &nfs_cb_version4, }; -static struct rpc_program cb_program; +static const struct rpc_program cb_program; static struct rpc_stat cb_stats = { .program = &cb_program }; #define NFS4_CALLBACK 0x40000000 -static struct rpc_program cb_program = { +static const struct rpc_program cb_program = { .name = "nfs4_cb", .number = NFS4_CALLBACK, .nrvers = ARRAY_SIZE(nfs_cb_version), diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index 88a114fce47..8949167a148 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -188,7 +188,7 @@ struct nlm_block { /* * Global variables */ -extern struct rpc_program nlm_program; +extern const struct rpc_program nlm_program; extern struct svc_procedure nlmsvc_procedures[]; #ifdef CONFIG_LOCKD_V4 extern struct svc_procedure nlmsvc_procedures4[]; diff --git a/include/linux/lockd/xdr4.h b/include/linux/lockd/xdr4.h index 7353821341e..e58c88b52ce 100644 --- a/include/linux/lockd/xdr4.h +++ b/include/linux/lockd/xdr4.h @@ -42,6 +42,6 @@ int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *); int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *); int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *); */ -extern struct rpc_version nlm_version4; +extern const struct rpc_version nlm_version4; #endif /* LOCKD_XDR4_H */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index f5188e10ea0..144419a9cbd 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1274,11 +1274,11 @@ struct nfs_rpc_ops { extern const struct nfs_rpc_ops nfs_v2_clientops; extern const struct nfs_rpc_ops nfs_v3_clientops; extern const struct nfs_rpc_ops nfs_v4_clientops; -extern struct rpc_version nfs_version2; -extern struct rpc_version nfs_version3; -extern struct rpc_version nfs_version4; +extern const struct rpc_version nfs_version2; +extern const struct rpc_version nfs_version3; +extern const struct rpc_version nfs_version4; -extern struct rpc_version nfsacl_version3; -extern struct rpc_program nfsacl_program; +extern const struct rpc_version nfsacl_version3; +extern const struct rpc_program nfsacl_program; #endif diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 4a46ffd73a0..a4c62e95c72 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -61,7 +61,7 @@ struct rpc_clnt { struct rpc_clnt * cl_parent; /* Points to parent of clones */ struct rpc_rtt cl_rtt_default; struct rpc_timeout cl_timeout_default; - struct rpc_program * cl_program; + const struct rpc_program *cl_program; char *cl_principal; /* target to authenticate to */ }; @@ -73,7 +73,7 @@ struct rpc_program { const char * name; /* protocol name */ u32 number; /* program number */ unsigned int nrvers; /* number of versions */ - struct rpc_version ** version; /* version array */ + const struct rpc_version ** version; /* version array */ struct rpc_stat * stats; /* statistics */ const char * pipe_dir_name; /* path to rpc_pipefs dir */ }; @@ -109,7 +109,7 @@ struct rpc_create_args { struct sockaddr *saddress; const struct rpc_timeout *timeout; const char *servername; - struct rpc_program *program; + const struct rpc_program *program; u32 prognumber; /* overrides program->number */ u32 version; rpc_authflavor_t authflavor; @@ -128,7 +128,7 @@ struct rpc_create_args { struct rpc_clnt *rpc_create(struct rpc_create_args *args); struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *, - struct rpc_program *, u32); + const struct rpc_program *, u32); void rpc_task_reset_client(struct rpc_task *task, struct rpc_clnt *clnt); struct rpc_clnt *rpc_clone_client(struct rpc_clnt *); void rpc_shutdown_client(struct rpc_clnt *); diff --git a/include/linux/sunrpc/stats.h b/include/linux/sunrpc/stats.h index 76f3f7cc6e3..edc64219f92 100644 --- a/include/linux/sunrpc/stats.h +++ b/include/linux/sunrpc/stats.h @@ -12,7 +12,7 @@ #include struct rpc_stat { - struct rpc_program * program; + const struct rpc_program *program; unsigned int netcnt, netudpcnt, @@ -60,7 +60,7 @@ void rpc_modcount(struct inode *, int); #ifdef CONFIG_PROC_FS struct proc_dir_entry * rpc_proc_register(struct net *,struct rpc_stat *); void rpc_proc_unregister(struct net *,const char *); -void rpc_proc_zero(struct rpc_program *); +void rpc_proc_zero(const struct rpc_program *); struct proc_dir_entry * svc_proc_register(struct net *, struct svc_stat *, const struct file_operations *); void svc_proc_unregister(struct net *, const char *); @@ -71,7 +71,7 @@ void svc_seq_show(struct seq_file *, static inline struct proc_dir_entry *rpc_proc_register(struct net *net, struct rpc_stat *s) { return NULL; } static inline void rpc_proc_unregister(struct net *net, const char *p) {} -static inline void rpc_proc_zero(struct rpc_program *p) {} +static inline void rpc_proc_zero(const struct rpc_program *p) {} static inline struct proc_dir_entry *svc_proc_register(struct net *net, struct svc_stat *s, const struct file_operations *f) { return NULL; } diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 1b2317fa404..db7220d8773 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -238,8 +238,8 @@ void rpc_clients_notifier_unregister(void) static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt) { - struct rpc_program *program = args->program; - struct rpc_version *version; + const struct rpc_program *program = args->program; + const struct rpc_version *version; struct rpc_clnt *clnt = NULL; struct rpc_auth *auth; int err; @@ -626,11 +626,11 @@ rpc_release_client(struct rpc_clnt *clnt) * The Sun NFSv2/v3 ACL protocol can do this. */ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old, - struct rpc_program *program, + const struct rpc_program *program, u32 vers) { struct rpc_clnt *clnt; - struct rpc_version *version; + const struct rpc_version *version; int err; BUG_ON(vers >= program->nrvers || !program->version[vers]); diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index d3978017b25..b1f08bd6788 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -112,7 +112,7 @@ enum { static void rpcb_getport_done(struct rpc_task *, void *); static void rpcb_map_release(void *data); -static struct rpc_program rpcb_program; +static const struct rpc_program rpcb_program; struct rpcbind_args { struct rpc_xprt * r_xprt; @@ -137,8 +137,8 @@ struct rpcb_info { struct rpc_procinfo * rpc_proc; }; -static struct rpcb_info rpcb_next_version[]; -static struct rpcb_info rpcb_next_version6[]; +static const struct rpcb_info rpcb_next_version[]; +static const struct rpcb_info rpcb_next_version6[]; static const struct rpc_call_ops rpcb_getport_ops = { .rpc_call_done = rpcb_getport_done, @@ -1051,7 +1051,7 @@ static struct rpc_procinfo rpcb_procedures4[] = { }, }; -static struct rpcb_info rpcb_next_version[] = { +static const struct rpcb_info rpcb_next_version[] = { { .rpc_vers = RPCBVERS_2, .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], @@ -1061,7 +1061,7 @@ static struct rpcb_info rpcb_next_version[] = { }, }; -static struct rpcb_info rpcb_next_version6[] = { +static const struct rpcb_info rpcb_next_version6[] = { { .rpc_vers = RPCBVERS_4, .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], @@ -1075,25 +1075,25 @@ static struct rpcb_info rpcb_next_version6[] = { }, }; -static struct rpc_version rpcb_version2 = { +static const struct rpc_version rpcb_version2 = { .number = RPCBVERS_2, .nrprocs = ARRAY_SIZE(rpcb_procedures2), .procs = rpcb_procedures2 }; -static struct rpc_version rpcb_version3 = { +static const struct rpc_version rpcb_version3 = { .number = RPCBVERS_3, .nrprocs = ARRAY_SIZE(rpcb_procedures3), .procs = rpcb_procedures3 }; -static struct rpc_version rpcb_version4 = { +static const struct rpc_version rpcb_version4 = { .number = RPCBVERS_4, .nrprocs = ARRAY_SIZE(rpcb_procedures4), .procs = rpcb_procedures4 }; -static struct rpc_version *rpcb_version[] = { +static const struct rpc_version *rpcb_version[] = { NULL, NULL, &rpcb_version2, @@ -1103,7 +1103,7 @@ static struct rpc_version *rpcb_version[] = { static struct rpc_stat rpcb_stats; -static struct rpc_program rpcb_program = { +static const struct rpc_program rpcb_program = { .name = "rpcbind", .number = RPCBIND_PROGRAM, .nrvers = ARRAY_SIZE(rpcb_version), -- cgit v1.2.3-70-g09d2 From 6b13168b36b6a7f603d962c232f1f2f325705832 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 23 Jan 2012 17:26:05 +0000 Subject: NFS: make nfs_client_list per net ns This patch splits global list of NFS clients into per-net-ns array of lists. This looks more strict and clearer. BTW, this patch also makes "/proc/fs/nfsfs/servers" entry content depends on /proc mount owner pid namespace. See below for details. NOTE: few words about how was /proc/fs/nfsfs/ entries content show per network namespace done. This is a little bit tricky and not the best is could be. But it's cheap (proper fix for /proc conteinerization is a hard nut to crack). The idea is simple: take proper network namespace from pid namespace child reaper nsproxy of /proc/ mount creator. This actually means, that if there are 2 containers with different net namespace sharing pid namespace, then read of /proc/fs/nfsfs/ entries will always return content, taken from net namespace of pid namespace creator task (and thus second namespace set wil be unvisible). Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 38 +++++++++++++++++++++++++++----------- fs/nfs/idmap.c | 5 ++--- fs/nfs/inode.c | 1 + fs/nfs/internal.h | 2 +- fs/nfs/netns.h | 1 + 5 files changed, 32 insertions(+), 15 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 98af1cb28ee..058eb9bcfa9 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -39,6 +39,8 @@ #include #include #include +#include +#include #include @@ -49,11 +51,11 @@ #include "internal.h" #include "fscache.h" #include "pnfs.h" +#include "netns.h" #define NFSDBG_FACILITY NFSDBG_CLIENT DEFINE_SPINLOCK(nfs_client_lock); -LIST_HEAD(nfs_client_list); static LIST_HEAD(nfs_volume_list); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 @@ -464,8 +466,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat { struct nfs_client *clp; const struct sockaddr *sap = data->addr; + struct nfs_net *nn = net_generic(data->net, nfs_net_id); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { const struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; /* Don't match clients that failed to initialise properly */ if (clp->cl_cons_state < 0) @@ -483,9 +486,6 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat /* Match the full socket address */ if (!nfs_sockaddr_cmp(sap, clap)) continue; - /* Match network namespace */ - if (clp->net != data->net) - continue; atomic_inc(&clp->cl_count); return clp; @@ -506,6 +506,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, { struct nfs_client *clp, *new = NULL; int error; + struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id); dprintk("--> nfs_get_client(%s,v%u)\n", cl_init->hostname ?: "", cl_init->rpc_ops->version); @@ -531,7 +532,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, /* install a new client and return with it unready */ install_client: clp = new; - list_add(&clp->cl_share_link, &nfs_client_list); + list_add(&clp->cl_share_link, &nn->nfs_client_list); spin_unlock(&nfs_client_lock); error = cl_init->rpc_ops->init_client(clp, timeparms, ip_addr, @@ -1227,9 +1228,10 @@ nfs4_find_client_sessionid(const struct sockaddr *addr, struct nfs4_sessionid *sid) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(&init_net, nfs_net_id); spin_lock(&nfs_client_lock); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { if (nfs4_cb_match_client(addr, clp, 1) == false) continue; @@ -1757,6 +1759,13 @@ out_free_server: return ERR_PTR(error); } +void nfs_clients_init(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + + INIT_LIST_HEAD(&nn->nfs_client_list); +} + #ifdef CONFIG_PROC_FS static struct proc_dir_entry *proc_fs_nfs; @@ -1810,13 +1819,15 @@ static int nfs_server_list_open(struct inode *inode, struct file *file) { struct seq_file *m; int ret; + struct pid_namespace *pid_ns = file->f_dentry->d_sb->s_fs_info; + struct net *net = pid_ns->child_reaper->nsproxy->net_ns; ret = seq_open(file, &nfs_server_list_ops); if (ret < 0) return ret; m = file->private_data; - m->private = PDE(inode)->data; + m->private = net; return 0; } @@ -1826,9 +1837,11 @@ static int nfs_server_list_open(struct inode *inode, struct file *file) */ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) { + struct nfs_net *nn = net_generic(m->private, nfs_net_id); + /* lock the list against modification */ spin_lock(&nfs_client_lock); - return seq_list_start_head(&nfs_client_list, *_pos); + return seq_list_start_head(&nn->nfs_client_list, *_pos); } /* @@ -1836,7 +1849,9 @@ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) */ static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) { - return seq_list_next(v, &nfs_client_list, pos); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + return seq_list_next(v, &nn->nfs_client_list, pos); } /* @@ -1853,9 +1868,10 @@ static void nfs_server_list_stop(struct seq_file *p, void *v) static int nfs_server_list_show(struct seq_file *m, void *v) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* display header on line 1 */ - if (v == &nfs_client_list) { + if (v == &nn->nfs_client_list) { seq_puts(m, "NV SERVER PORT USE HOSTNAME\n"); return 0; } diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 83f7d42d5c7..2f78f0ce266 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -532,13 +532,12 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, void *ptr) { struct super_block *sb = ptr; + struct nfs_net *nn = net_generic(sb->s_fs_info, nfs_net_id); struct nfs_client *clp; int error = 0; spin_lock(&nfs_client_lock); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { - if (clp->net != sb->s_fs_info) - continue; + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { if (clp->rpc_ops != &nfs_v4_clientops) continue; error = __rpc_pipefs_event(clp, event, sb); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 028464bcbe0..0365b84cc2c 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1558,6 +1558,7 @@ EXPORT_SYMBOL_GPL(nfs_net_id); static int nfs_net_init(struct net *net) { + nfs_clients_init(net); return nfs_dns_resolver_cache_init(net); } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index cdb121d3c6f..a9ae8069fff 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -146,6 +146,7 @@ extern void nfs_umount(const struct nfs_mount_request *info); /* client.c */ extern const struct rpc_program nfs_program; +extern void nfs_clients_init(struct net *net); extern void nfs_cleanup_cb_ident_idr(void); extern void nfs_put_client(struct nfs_client *); @@ -183,7 +184,6 @@ static inline void nfs_fs_proc_exit(void) #endif #ifdef CONFIG_NFS_V4 extern spinlock_t nfs_client_lock; -extern struct list_head nfs_client_list; #endif /* nfs4namespace.c */ diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index 39ae4cad5b4..feb33c3f9a5 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -7,6 +7,7 @@ struct nfs_net { struct cache_detail *nfs_dns_resolve; struct rpc_pipe *bl_device_pipe; + struct list_head nfs_client_list; }; extern int nfs_net_id; -- cgit v1.2.3-70-g09d2 From c25d32b26361ce0814fef2281f164866c18c8692 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 23 Jan 2012 17:26:14 +0000 Subject: NFS: make nfs_volume_list per net ns This patch splits global list of NFS servers into per-net-ns array of lists. This looks more strict and clearer. BTW, this patch also makes "/proc/fs/nfsfs/volumes" content depends on /proc mount owner pid namespace. See below for details. NOTE: few words about how was /proc/fs/nfsfs/ entries content show per network namespace done. This is a little bit tricky and not the best is could be. But it's cheap (proper fix for /proc conteinerization is a hard nut to crack). The idea is simple: take proper network namespace from pid namespace child reaper nsproxy of /proc/ mount creator. This actually means, that if there are 2 containers with different net namespace sharing pid namespace, then read of /proc/fs/nfsfs/ entries will always return content, taken from net namespace of pid namespace creator task (and thus second namespace set wil be unvisible). Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 20 ++++++++++++++------ fs/nfs/netns.h | 1 + 2 files changed, 15 insertions(+), 6 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 058eb9bcfa9..d58e8386e6b 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -56,7 +56,6 @@ #define NFSDBG_FACILITY NFSDBG_CLIENT DEFINE_SPINLOCK(nfs_client_lock); -static LIST_HEAD(nfs_volume_list); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */ @@ -1036,10 +1035,11 @@ static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_serve static void nfs_server_insert_lists(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); spin_lock(&nfs_client_lock); list_add_tail_rcu(&server->client_link, &clp->cl_superblocks); - list_add_tail(&server->master_link, &nfs_volume_list); + list_add_tail(&server->master_link, &nn->nfs_volume_list); clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); spin_unlock(&nfs_client_lock); @@ -1764,6 +1764,7 @@ void nfs_clients_init(struct net *net) struct nfs_net *nn = net_generic(net, nfs_net_id); INIT_LIST_HEAD(&nn->nfs_client_list); + INIT_LIST_HEAD(&nn->nfs_volume_list); } #ifdef CONFIG_PROC_FS @@ -1900,13 +1901,15 @@ static int nfs_volume_list_open(struct inode *inode, struct file *file) { struct seq_file *m; int ret; + struct pid_namespace *pid_ns = file->f_dentry->d_sb->s_fs_info; + struct net *net = pid_ns->child_reaper->nsproxy->net_ns; ret = seq_open(file, &nfs_volume_list_ops); if (ret < 0) return ret; m = file->private_data; - m->private = PDE(inode)->data; + m->private = net; return 0; } @@ -1916,9 +1919,11 @@ static int nfs_volume_list_open(struct inode *inode, struct file *file) */ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) { + struct nfs_net *nn = net_generic(m->private, nfs_net_id); + /* lock the list against modification */ spin_lock(&nfs_client_lock); - return seq_list_start_head(&nfs_volume_list, *_pos); + return seq_list_start_head(&nn->nfs_volume_list, *_pos); } /* @@ -1926,7 +1931,9 @@ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) */ static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) { - return seq_list_next(v, &nfs_volume_list, pos); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + return seq_list_next(v, &nn->nfs_volume_list, pos); } /* @@ -1945,9 +1952,10 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) struct nfs_server *server; struct nfs_client *clp; char dev[8], fsid[17]; + struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* display header on line 1 */ - if (v == &nfs_volume_list) { + if (v == &nn->nfs_volume_list) { seq_puts(m, "NV SERVER PORT DEV FSID FSC\n"); return 0; } diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index feb33c3f9a5..0fbd4e017d2 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -8,6 +8,7 @@ struct nfs_net { struct cache_detail *nfs_dns_resolve; struct rpc_pipe *bl_device_pipe; struct list_head nfs_client_list; + struct list_head nfs_volume_list; }; extern int nfs_net_id; -- cgit v1.2.3-70-g09d2 From 28cd1b3f262dba56b5e335ba668e342d530f6129 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 23 Jan 2012 17:26:22 +0000 Subject: NFS: make cb_ident_idr per net ns This patch makes ID's infrastructure network namespace aware. This was done mainly because of nfs_client_lock, which is desired to be per network namespace, but protects NFS clients ID's. NOTE: NFS client's net pointer have to be set prior to ID initialization, proper assignment was moved. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/callback_xdr.c | 2 +- fs/nfs/client.c | 28 ++++++++++++++++++---------- fs/nfs/inode.c | 2 +- fs/nfs/internal.h | 4 ++-- fs/nfs/netns.h | 3 +++ 5 files changed, 25 insertions(+), 14 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 2f45aa71742..e14af46bd2c 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -876,7 +876,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r return rpc_garbage_args; if (hdr_arg.minorversion == 0) { - cps.clp = nfs4_find_client_ident(hdr_arg.cb_ident); + cps.clp = nfs4_find_client_ident(rqstp->rq_xprt->xpt_net, hdr_arg.cb_ident); if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) return rpc_drop_reply; } diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d58e8386e6b..f51b2795ce0 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -58,7 +58,6 @@ DEFINE_SPINLOCK(nfs_client_lock); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 -static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */ /* * Get a unique NFSv4.0 callback identifier which will be used @@ -67,14 +66,15 @@ static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) { int ret = 0; + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); if (clp->rpc_ops->version != 4 || minorversion != 0) return ret; retry: - if (!idr_pre_get(&cb_ident_idr, GFP_KERNEL)) + if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) return -ENOMEM; spin_lock(&nfs_client_lock); - ret = idr_get_new(&cb_ident_idr, clp, &clp->cl_cb_ident); + ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident); spin_unlock(&nfs_client_lock); if (ret == -EAGAIN) goto retry; @@ -173,6 +173,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ clp->cl_rpcclient = ERR_PTR(-EINVAL); clp->cl_proto = cl_init->proto; + clp->net = cl_init->net; #ifdef CONFIG_NFS_V4 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion); @@ -191,7 +192,6 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ if (!IS_ERR(cred)) clp->cl_machine_cred = cred; nfs_fscache_get_client_cookie(clp); - clp->net = cl_init->net; return clp; @@ -236,16 +236,20 @@ static void nfs4_shutdown_client(struct nfs_client *clp) } /* idr_remove_all is not needed as all id's are removed by nfs_put_client */ -void nfs_cleanup_cb_ident_idr(void) +void nfs_cleanup_cb_ident_idr(struct net *net) { - idr_destroy(&cb_ident_idr); + struct nfs_net *nn = net_generic(net, nfs_net_id); + + idr_destroy(&nn->cb_ident_idr); } /* nfs_client_lock held */ static void nfs_cb_idr_remove_locked(struct nfs_client *clp) { + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); + if (clp->cl_cb_ident) - idr_remove(&cb_ident_idr, clp->cl_cb_ident); + idr_remove(&nn->cb_ident_idr, clp->cl_cb_ident); } static void pnfs_init_server(struct nfs_server *server) @@ -263,7 +267,7 @@ static void nfs4_shutdown_client(struct nfs_client *clp) { } -void nfs_cleanup_cb_ident_idr(void) +void nfs_cleanup_cb_ident_idr(struct net *net) { } @@ -1203,12 +1207,13 @@ error: * Find a client by callback identifier */ struct nfs_client * -nfs4_find_client_ident(int cb_ident) +nfs4_find_client_ident(struct net *net, int cb_ident) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(net, nfs_net_id); spin_lock(&nfs_client_lock); - clp = idr_find(&cb_ident_idr, cb_ident); + clp = idr_find(&nn->cb_ident_idr, cb_ident); if (clp) atomic_inc(&clp->cl_count); spin_unlock(&nfs_client_lock); @@ -1765,6 +1770,9 @@ void nfs_clients_init(struct net *net) INIT_LIST_HEAD(&nn->nfs_client_list); INIT_LIST_HEAD(&nn->nfs_volume_list); +#ifdef CONFIG_NFS_V4 + idr_init(&nn->cb_ident_idr); +#endif } #ifdef CONFIG_PROC_FS diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 0365b84cc2c..6c662598f88 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1565,6 +1565,7 @@ static int nfs_net_init(struct net *net) static void nfs_net_exit(struct net *net) { nfs_dns_resolver_cache_destroy(net); + nfs_cleanup_cb_ident_idr(net); } static struct pernet_operations nfs_net_ops = { @@ -1674,7 +1675,6 @@ static void __exit exit_nfs_fs(void) #ifdef CONFIG_PROC_FS rpc_proc_unregister(&init_net, "nfs"); #endif - nfs_cleanup_cb_ident_idr(); unregister_nfs_fs(); nfs_fs_proc_exit(); nfsiod_stop(); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a9ae8069fff..958fff2927c 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -148,9 +148,9 @@ extern void nfs_umount(const struct nfs_mount_request *info); extern const struct rpc_program nfs_program; extern void nfs_clients_init(struct net *net); -extern void nfs_cleanup_cb_ident_idr(void); +extern void nfs_cleanup_cb_ident_idr(struct net *); extern void nfs_put_client(struct nfs_client *); -extern struct nfs_client *nfs4_find_client_ident(int); +extern struct nfs_client *nfs4_find_client_ident(struct net *, int); extern struct nfs_client * nfs4_find_client_sessionid(const struct sockaddr *, struct nfs4_sessionid *); extern struct nfs_server *nfs_create_server( diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index 0fbd4e017d2..547cc9525ba 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -9,6 +9,9 @@ struct nfs_net { struct rpc_pipe *bl_device_pipe; struct list_head nfs_client_list; struct list_head nfs_volume_list; +#ifdef CONFIG_NFS_V4 + struct idr cb_ident_idr; /* Protected by nfs_client_lock */ +#endif }; extern int nfs_net_id; -- cgit v1.2.3-70-g09d2 From dc03085834a4530b2514708a643cd3fe38f35b21 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 23 Jan 2012 17:26:31 +0000 Subject: NFS: make nfs_client_lock per net ns This patch makes nfs_clients_lock allocated per network namespace. All items it protects are already network namespace aware. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 51 +++++++++++++++++++++++++++++---------------------- fs/nfs/idmap.c | 4 ++-- fs/nfs/internal.h | 3 --- fs/nfs/netns.h | 1 + 4 files changed, 32 insertions(+), 27 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index f51b2795ce0..9e11d298883 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -55,7 +55,6 @@ #define NFSDBG_FACILITY NFSDBG_CLIENT -DEFINE_SPINLOCK(nfs_client_lock); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 @@ -73,9 +72,9 @@ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) retry: if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) return -ENOMEM; - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); if (ret == -EAGAIN) goto retry; return ret; @@ -313,15 +312,18 @@ static void nfs_free_client(struct nfs_client *clp) */ void nfs_put_client(struct nfs_client *clp) { + struct nfs_net *nn; + if (!clp) return; dprintk("--> nfs_put_client({%d})\n", atomic_read(&clp->cl_count)); + nn = net_generic(clp->net, nfs_net_id); - if (atomic_dec_and_lock(&clp->cl_count, &nfs_client_lock)) { + if (atomic_dec_and_lock(&clp->cl_count, &nn->nfs_client_lock)) { list_del(&clp->cl_share_link); nfs_cb_idr_remove_locked(clp); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); BUG_ON(!list_empty(&clp->cl_superblocks)); @@ -516,7 +518,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, /* see if the client already exists */ do { - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); clp = nfs_match_client(cl_init); if (clp) @@ -524,7 +526,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, if (new) goto install_client; - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); new = nfs_alloc_client(cl_init); } while (!IS_ERR(new)); @@ -536,7 +538,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, install_client: clp = new; list_add(&clp->cl_share_link, &nn->nfs_client_list); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); error = cl_init->rpc_ops->init_client(clp, timeparms, ip_addr, authflavour, noresvport); @@ -551,7 +553,7 @@ install_client: * - make sure it's ready before returning */ found_client: - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); if (new) nfs_free_client(new); @@ -1041,24 +1043,25 @@ static void nfs_server_insert_lists(struct nfs_server *server) struct nfs_client *clp = server->nfs_client; struct nfs_net *nn = net_generic(clp->net, nfs_net_id); - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); list_add_tail_rcu(&server->client_link, &clp->cl_superblocks); list_add_tail(&server->master_link, &nn->nfs_volume_list); clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); } static void nfs_server_remove_lists(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); list_del_rcu(&server->client_link); if (clp && list_empty(&clp->cl_superblocks)) set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); list_del(&server->master_link); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); synchronize_rcu(); } @@ -1212,11 +1215,11 @@ nfs4_find_client_ident(struct net *net, int cb_ident) struct nfs_client *clp; struct nfs_net *nn = net_generic(net, nfs_net_id); - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); clp = idr_find(&nn->cb_ident_idr, cb_ident); if (clp) atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return clp; } @@ -1235,7 +1238,7 @@ nfs4_find_client_sessionid(const struct sockaddr *addr, struct nfs_client *clp; struct nfs_net *nn = net_generic(&init_net, nfs_net_id); - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { if (nfs4_cb_match_client(addr, clp, 1) == false) continue; @@ -1249,10 +1252,10 @@ nfs4_find_client_sessionid(const struct sockaddr *addr, continue; atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return clp; } - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return NULL; } @@ -1849,7 +1852,7 @@ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* lock the list against modification */ - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); return seq_list_start_head(&nn->nfs_client_list, *_pos); } @@ -1868,7 +1871,9 @@ static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) */ static void nfs_server_list_stop(struct seq_file *p, void *v) { - spin_unlock(&nfs_client_lock); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + spin_unlock(&nn->nfs_client_lock); } /* @@ -1930,7 +1935,7 @@ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* lock the list against modification */ - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); return seq_list_start_head(&nn->nfs_volume_list, *_pos); } @@ -1949,7 +1954,9 @@ static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) */ static void nfs_volume_list_stop(struct seq_file *p, void *v) { - spin_unlock(&nfs_client_lock); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + spin_unlock(&nn->nfs_client_lock); } /* diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 2f78f0ce266..d2afcd8354e 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -536,7 +536,7 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, struct nfs_client *clp; int error = 0; - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { if (clp->rpc_ops != &nfs_v4_clientops) continue; @@ -544,7 +544,7 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, if (error) break; } - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return error; } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 958fff2927c..b38b73347af 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -182,9 +182,6 @@ static inline void nfs_fs_proc_exit(void) { } #endif -#ifdef CONFIG_NFS_V4 -extern spinlock_t nfs_client_lock; -#endif /* nfs4namespace.c */ #ifdef CONFIG_NFS_V4 diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index 547cc9525ba..7baad89ae60 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -12,6 +12,7 @@ struct nfs_net { #ifdef CONFIG_NFS_V4 struct idr cb_ident_idr; /* Protected by nfs_client_lock */ #endif + spinlock_t nfs_client_lock; }; extern int nfs_net_id; -- cgit v1.2.3-70-g09d2 From c7add9a9720ff5be4715f7a0bb0d9578b2e8534e Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Thu, 26 Jan 2012 15:11:49 +0400 Subject: NFS: search for client session id in proper network namespace Network namespace is taken from request transport and passed as a part of cb_process_state structure. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/callback.h | 1 + fs/nfs/callback_proc.c | 2 +- fs/nfs/callback_xdr.c | 1 + fs/nfs/client.c | 4 ++-- fs/nfs/internal.h | 3 ++- 5 files changed, 7 insertions(+), 4 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index c89d3b9e483..197e0d3754c 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -39,6 +39,7 @@ struct cb_process_state { __be32 drc_status; struct nfs_client *clp; int slotid; + struct net *net; }; struct cb_compound_hdr_arg { diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 0e6e63f55db..f71978d107d 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -461,7 +461,7 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, int i; __be32 status = htonl(NFS4ERR_BADSESSION); - clp = nfs4_find_client_sessionid(args->csa_addr, &args->csa_sessionid); + clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, &args->csa_sessionid); if (clp == NULL) goto out; diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index e14af46bd2c..2e372240d02 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -861,6 +861,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r .drc_status = 0, .clp = NULL, .slotid = -1, + .net = rqstp->rq_xprt->xpt_net, }; unsigned int nops = 0; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 9e11d298883..2328dcbf6c0 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1232,11 +1232,11 @@ nfs4_find_client_ident(struct net *net, int cb_ident) * Returns NULL if no such client */ struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *addr, +nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, struct nfs4_sessionid *sid) { struct nfs_client *clp; - struct nfs_net *nn = net_generic(&init_net, nfs_net_id); + struct nfs_net *nn = net_generic(net, nfs_net_id); spin_lock(&nn->nfs_client_lock); list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index b38b73347af..0c3648a947d 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -152,7 +152,8 @@ extern void nfs_cleanup_cb_ident_idr(struct net *); extern void nfs_put_client(struct nfs_client *); extern struct nfs_client *nfs4_find_client_ident(struct net *, int); extern struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *, struct nfs4_sessionid *); +nfs4_find_client_sessionid(struct net *, const struct sockaddr *, + struct nfs4_sessionid *); extern struct nfs_server *nfs_create_server( const struct nfs_parsed_mount_data *, struct nfs_fh *); -- cgit v1.2.3-70-g09d2 From 66697bfd6aec0a9ca9331c1aa544ac20324a7561 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 31 Jan 2012 15:08:13 +0400 Subject: LockD: make nlm hosts network namespace aware This object depends on RPC client, and thus on network namespace. So let's make it's allocation and lookup in network namespace context. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/lockd/clntlock.c | 3 ++- fs/lockd/host.c | 16 ++++++++++++++-- fs/nfs/client.c | 1 + include/linux/lockd/bind.h | 1 + include/linux/lockd/lockd.h | 4 +++- 5 files changed, 21 insertions(+), 4 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 8d4ea8351e3..ba1dc2eebd1 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -62,7 +62,8 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init) host = nlmclnt_lookup_host(nlm_init->address, nlm_init->addrlen, nlm_init->protocol, nlm_version, - nlm_init->hostname, nlm_init->noresvport); + nlm_init->hostname, nlm_init->noresvport, + nlm_init->net); if (host == NULL) { lockd_down(); return ERR_PTR(-ENOLCK); diff --git a/fs/lockd/host.c b/fs/lockd/host.c index 6f29836ec0c..9ebd91dc42c 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -17,6 +17,8 @@ #include #include +#include + #include #define NLMDBG_FACILITY NLMDBG_HOSTCACHE @@ -54,6 +56,7 @@ struct nlm_lookup_host_info { const char *hostname; /* remote's hostname */ const size_t hostname_len; /* it's length */ const int noresvport; /* use non-priv port */ + struct net *net; /* network namespace to bind */ }; /* @@ -155,6 +158,7 @@ static struct nlm_host *nlm_alloc_host(struct nlm_lookup_host_info *ni, INIT_LIST_HEAD(&host->h_reclaim); host->h_nsmhandle = nsm; host->h_addrbuf = nsm->sm_addrbuf; + host->net = ni->net; out: return host; @@ -206,7 +210,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const unsigned short protocol, const u32 version, const char *hostname, - int noresvport) + int noresvport, + struct net *net) { struct nlm_lookup_host_info ni = { .server = 0, @@ -217,6 +222,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, .hostname = hostname, .hostname_len = strlen(hostname), .noresvport = noresvport, + .net = net, }; struct hlist_head *chain; struct hlist_node *pos; @@ -231,6 +237,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, chain = &nlm_client_hosts[nlm_hash_address(sap)]; hlist_for_each_entry(host, pos, chain, h_hash) { + if (host->net != net) + continue; if (!rpc_cmp_addr(nlm_addr(host), sap)) continue; @@ -318,6 +326,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, struct nsm_handle *nsm = NULL; struct sockaddr *src_sap = svc_daddr(rqstp); size_t src_len = rqstp->rq_daddrlen; + struct net *net = rqstp->rq_xprt->xpt_net; struct nlm_lookup_host_info ni = { .server = 1, .sap = svc_addr(rqstp), @@ -326,6 +335,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, .version = rqstp->rq_vers, .hostname = hostname, .hostname_len = hostname_len, + .net = net, }; dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__, @@ -339,6 +349,8 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, chain = &nlm_server_hosts[nlm_hash_address(ni.sap)]; hlist_for_each_entry(host, pos, chain, h_hash) { + if (host->net != net) + continue; if (!rpc_cmp_addr(nlm_addr(host), ni.sap)) continue; @@ -431,7 +443,7 @@ nlm_bind_host(struct nlm_host *host) .to_retries = 5U, }; struct rpc_create_args args = { - .net = &init_net, + .net = host->net, .protocol = host->h_proto, .address = nlm_addr(host), .addrsize = host->h_addrlen, diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 2328dcbf6c0..1a5cd49dff8 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -707,6 +707,7 @@ static int nfs_start_lockd(struct nfs_server *server) .nfs_version = clp->rpc_ops->version, .noresvport = server->flags & NFS_MOUNT_NORESVPORT ? 1 : 0, + .net = clp->net, }; if (nlm_init.nfs_version > 3) diff --git a/include/linux/lockd/bind.h b/include/linux/lockd/bind.h index fbc48f89852..11a966e5f82 100644 --- a/include/linux/lockd/bind.h +++ b/include/linux/lockd/bind.h @@ -42,6 +42,7 @@ struct nlmclnt_initdata { unsigned short protocol; u32 nfs_version; int noresvport; + struct net *net; }; /* diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index 8949167a148..94b3d13be42 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -67,6 +67,7 @@ struct nlm_host { struct list_head h_reclaim; /* Locks in RECLAIM state */ struct nsm_handle *h_nsmhandle; /* NSM status handle */ char *h_addrbuf; /* address eyecatcher */ + struct net *net; /* host net */ }; /* @@ -222,7 +223,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const unsigned short protocol, const u32 version, const char *hostname, - int noresvport); + int noresvport, + struct net *net); void nlmclnt_release_host(struct nlm_host *); struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const char *hostname, -- cgit v1.2.3-70-g09d2 From 4c03ae4a897b52e0e8fc38749606549eaa20d5b7 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 7 Feb 2012 00:05:11 -0500 Subject: NFS: Initialise the nfs_net->nfs_client_lock Ensure that we initialise the nfs_net->nfs_client_lock spinlock. Also ensure that nfs_server_remove_lists() doesn't try to dereference server->nfs_client before that is initialised. Signed-off-by: Trond Myklebust Cc: Stanislav Kinsbursky --- fs/nfs/client.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 1a5cd49dff8..6f6267cb6ba 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1055,11 +1055,14 @@ static void nfs_server_insert_lists(struct nfs_server *server) static void nfs_server_remove_lists(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; - struct nfs_net *nn = net_generic(clp->net, nfs_net_id); + struct nfs_net *nn; + if (clp == NULL) + return; + nn = net_generic(clp->net, nfs_net_id); spin_lock(&nn->nfs_client_lock); list_del_rcu(&server->client_link); - if (clp && list_empty(&clp->cl_superblocks)) + if (list_empty(&clp->cl_superblocks)) set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); list_del(&server->master_link); spin_unlock(&nn->nfs_client_lock); @@ -1777,6 +1780,7 @@ void nfs_clients_init(struct net *net) #ifdef CONFIG_NFS_V4 idr_init(&nn->cb_ident_idr); #endif + spin_lock_init(&nn->nfs_client_lock); } #ifdef CONFIG_PROC_FS -- cgit v1.2.3-70-g09d2 From b6d1e83b4ea6cb369bdd490871f00651decdb509 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 7 Feb 2012 19:53:19 +0400 Subject: NFS: fix nfs4_find_client_sessionid() arguments list It's not compilable in case of CONFIG_NFS_V4_1 is not set. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 6f6267cb6ba..d0f850ffeb1 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1266,7 +1266,7 @@ nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, #else /* CONFIG_NFS_V4_1 */ struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *addr, +nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, struct nfs4_sessionid *sid) { return NULL; -- cgit v1.2.3-70-g09d2 From abd96698613eb27415e7028b6100be930920adc6 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2012 08:46:49 +0100 Subject: NFS: Ensure struct nfs_client holds a reference to the net namespace Otherwise we have no guarantee that the net namespace won't just disappear from underneath us once the task that created it is destroyed. Signed-off-by: Trond Myklebust Cc: Stanislav Kinsbursky --- fs/nfs/client.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d0f850ffeb1..8563585ccce 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -172,7 +172,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ clp->cl_rpcclient = ERR_PTR(-EINVAL); clp->cl_proto = cl_init->proto; - clp->net = cl_init->net; + clp->net = get_net(cl_init->net); #ifdef CONFIG_NFS_V4 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion); @@ -300,6 +300,7 @@ static void nfs_free_client(struct nfs_client *clp) nfs4_deviceid_purge_client(clp); + put_net(clp->net); kfree(clp->cl_hostname); kfree(clp->server_scope); kfree(clp); -- cgit v1.2.3-70-g09d2 From 7df529af5fb4b4064f8cd62629e259ac79c0b4ca Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 26 Feb 2012 17:34:22 -0500 Subject: NFSv4.1: Don't call nfs4_deviceid_purge_client() unless we're NFSv4.1 Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 7 ++++--- fs/nfs/pnfs.h | 3 --- 2 files changed, 4 insertions(+), 6 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 8563585ccce..592b5583aa3 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -204,8 +204,11 @@ error_0: #ifdef CONFIG_NFS_V4_1 static void nfs4_shutdown_session(struct nfs_client *clp) { - if (nfs4_has_session(clp)) + if (nfs4_has_session(clp)) { + nfs4_deviceid_purge_client(clp); nfs4_destroy_session(clp->cl_session); + } + } #else /* CONFIG_NFS_V4_1 */ static void nfs4_shutdown_session(struct nfs_client *clp) @@ -298,8 +301,6 @@ static void nfs_free_client(struct nfs_client *clp) if (clp->cl_machine_cred != NULL) put_rpccred(clp->cl_machine_cred); - nfs4_deviceid_purge_client(clp); - put_net(clp->net); kfree(clp->cl_hostname); kfree(clp->server_scope); diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 53d593a0a4f..8088d51f495 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -426,9 +426,6 @@ static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) return 0; } -static inline void nfs4_deviceid_purge_client(struct nfs_client *ncl) -{ -} #endif /* CONFIG_NFS_V4_1 */ #endif /* FS_NFS_PNFS_H */ -- cgit v1.2.3-70-g09d2 From 7d2ed9ac22bc6bf0d34e8fd291a5295f373b384e Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 17 Feb 2012 15:20:26 -0500 Subject: NFSv4: parse and display server implementation ids Shows the implementation ids in /proc/self/mountstats. This doesn't break the nfs-utils mountstats tool. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 1 + fs/nfs/nfs4proc.c | 21 +++++++++++++++++++++ fs/nfs/nfs4xdr.c | 42 +++++++++++++++++++++++++++++++++++++----- fs/nfs/super.c | 8 ++++++++ include/linux/nfs_fs_sb.h | 2 ++ include/linux/nfs_xdr.h | 15 +++++++-------- 6 files changed, 76 insertions(+), 13 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 592b5583aa3..1506adf4d4e 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -304,6 +304,7 @@ static void nfs_free_client(struct nfs_client *clp) put_net(clp->net); kfree(clp->cl_hostname); kfree(clp->server_scope); + kfree(clp->impl_id); kfree(clp); dprintk("<-- nfs_free_client()\n"); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 20c3bb06763..90a17cc3ebc 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4950,10 +4950,23 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) goto out; } + res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); + if (unlikely(!res.impl_id)) { + status = -ENOMEM; + goto out_server_scope; + } + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); + if (!status) { + /* use the most recent implementation id */ + kfree(clp->impl_id); + clp->impl_id = res.impl_id; + } else + kfree(res.impl_id); + if (!status) { if (clp->server_scope && !nfs41_same_server_scope(clp->server_scope, @@ -4970,8 +4983,16 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) goto out; } } + +out_server_scope: kfree(res.server_scope); out: + if (clp->impl_id) + dprintk("%s: Server Implementation ID: " + "domain: %s, name: %s, date: %llu,%u\n", + __func__, clp->impl_id->domain, clp->impl_id->name, + clp->impl_id->date.seconds, + clp->impl_id->date.nseconds); dprintk("<-- %s status= %d\n", __func__, status); return status; } diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index d824aedb123..b7c04339fdc 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -291,7 +291,11 @@ static int nfs4_stat_to_errno(int); /* eir_server_scope<> */ \ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 1 /* eir_server_impl_id array length */ + \ - 0 /* ignored eir_server_impl_id contents */) + 1 /* nii_domain */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 1 /* nii_name */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 3 /* nii_date */) #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) #define decode_channel_attrs_maxsz (6 + \ 1 /* ca_rdma_ird.len */ + \ @@ -5256,6 +5260,7 @@ static int decode_exchange_id(struct xdr_stream *xdr, char *dummy_str; int status; struct nfs_client *clp = res->client; + uint32_t impl_id_count; status = decode_op_hdr(xdr, OP_EXCHANGE_ID); if (status) @@ -5297,11 +5302,38 @@ static int decode_exchange_id(struct xdr_stream *xdr, memcpy(res->server_scope->server_scope, dummy_str, dummy); res->server_scope->server_scope_sz = dummy; - /* Throw away Implementation id array */ - status = decode_opaque_inline(xdr, &dummy, &dummy_str); - if (unlikely(status)) - return status; + /* Implementation Id */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + impl_id_count = be32_to_cpup(p++); + if (impl_id_count) { + /* nii_domain */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->domain, dummy_str, dummy); + + /* nii_name */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->name, dummy_str, dummy); + + /* nii_date */ + p = xdr_inline_decode(xdr, 12); + if (unlikely(!p)) + goto out_overflow; + p = xdr_decode_hyper(p, &res->impl_id->date.seconds); + res->impl_id->date.nseconds = be32_to_cpup(p); + + /* if there's more than one entry, ignore the rest */ + } return 0; out_overflow: print_overflow_msg(__func__, xdr); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 6708f3044eb..8154accd116 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -809,6 +809,14 @@ static int nfs_show_stats(struct seq_file *m, struct dentry *root) seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ); + if (nfss->nfs_client && nfss->nfs_client->impl_id) { + struct nfs41_impl_id *impl_id = nfss->nfs_client->impl_id; + seq_printf(m, "\n\timpl_id:\tname='%s',domain='%s'," + "date='%llu,%u'", + impl_id->name, impl_id->domain, + impl_id->date.seconds, impl_id->date.nseconds); + } + seq_printf(m, "\n\tcaps:\t"); seq_printf(m, "caps=0x%x", nfss->caps); seq_printf(m, ",wtmult=%u", nfss->wtmult); diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 3bf47666646..03d0b91c2d5 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -18,6 +18,7 @@ struct nfs4_sequence_res; struct nfs_server; struct nfs4_minor_version_ops; struct server_scope; +struct nfs41_impl_id; /* * The nfs_client identifies our client state to the server. @@ -86,6 +87,7 @@ struct nfs_client { #endif struct server_scope *server_scope; /* from exchange_id */ + struct nfs41_impl_id *impl_id; /* from exchange_id */ struct net *net; }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index adbc84ac345..046c1bfddc3 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1054,14 +1054,6 @@ struct nfstime4 { }; #ifdef CONFIG_NFS_V4_1 -struct nfs_impl_id4 { - u32 domain_len; - char *domain; - u32 name_len; - char *name; - struct nfstime4 date; -}; - #define NFS4_EXCHANGE_ID_LEN (48) struct nfs41_exchange_id_args { struct nfs_client *client; @@ -1082,10 +1074,17 @@ struct server_scope { char server_scope[NFS4_OPAQUE_LIMIT]; }; +struct nfs41_impl_id { + char domain[NFS4_OPAQUE_LIMIT + 1]; + char name[NFS4_OPAQUE_LIMIT + 1]; + struct nfstime4 date; +}; + struct nfs41_exchange_id_res { struct nfs_client *client; u32 flags; struct server_scope *server_scope; + struct nfs41_impl_id *impl_id; }; struct nfs41_create_session_args { -- cgit v1.2.3-70-g09d2 From 2446ab6070861aba2dd9229463ffbc40016a9f33 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 1 Mar 2012 17:00:56 -0500 Subject: SUNRPC: Use RCU to dereference the rpc_clnt.cl_xprt field A migration event will replace the rpc_xprt used by an rpc_clnt. To ensure this can be done safely, all references to cl_xprt must now use a form of rcu_dereference(). Special care is taken with rpc_peeraddr2str(), which returns a pointer to memory whose lifetime is the same as the rpc_xprt. Signed-off-by: Trond Myklebust [ cel: fix lockdep splats and layering violations ] [ cel: forward ported to 3.4 ] [ cel: remove rpc_max_reqs(), add rpc_net_ns() ] Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/callback_proc.c | 9 ++-- fs/nfs/client.c | 16 ++++-- fs/nfs/nfs4namespace.c | 2 +- fs/nfs/nfs4proc.c | 13 +++-- fs/nfs/nfs4state.c | 25 +++++++--- fs/nfs/super.c | 5 ++ include/linux/sunrpc/clnt.h | 4 +- include/linux/sunrpc/debug.h | 13 +++++ net/sunrpc/auth_gss/auth_gss.c | 4 +- net/sunrpc/clnt.c | 110 +++++++++++++++++++++++++++++++++-------- net/sunrpc/rpc_pipe.c | 3 ++ net/sunrpc/rpcb_clnt.c | 15 ++++-- net/sunrpc/stats.c | 6 ++- 13 files changed, 175 insertions(+), 50 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 0e0865e3806..1bb29724362 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "nfs4_fs.h" #include "callback.h" #include "delegation.h" @@ -33,7 +34,7 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, res->bitmap[0] = res->bitmap[1] = 0; res->status = htonl(NFS4ERR_BADHANDLE); - dprintk("NFS: GETATTR callback request from %s\n", + dprintk_rcu("NFS: GETATTR callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); inode = nfs_delegation_find_inode(cps->clp, &args->fh); @@ -73,7 +74,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ goto out; - dprintk("NFS: RECALL callback request from %s\n", + dprintk_rcu("NFS: RECALL callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); res = htonl(NFS4ERR_BADHANDLE); @@ -533,7 +534,7 @@ __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: RECALL_ANY callback request from %s\n", + dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); status = cpu_to_be32(NFS4ERR_INVAL); @@ -568,7 +569,7 @@ __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", + dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), args->crsa_target_max_slots); diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 1506adf4d4e..d038dc5916e 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1284,16 +1284,18 @@ static int nfs4_init_callback(struct nfs_client *clp) int error; if (clp->rpc_ops->version == 4) { + struct rpc_xprt *xprt; + + xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt); + if (nfs4_has_session(clp)) { - error = xprt_setup_backchannel( - clp->cl_rpcclient->cl_xprt, + error = xprt_setup_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); if (error < 0) return error; } - error = nfs_callback_up(clp->cl_mvops->minor_version, - clp->cl_rpcclient->cl_xprt); + error = nfs_callback_up(clp->cl_mvops->minor_version, xprt); if (error < 0) { dprintk("%s: failed to start callback. Error = %d\n", __func__, error); @@ -1678,7 +1680,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, data->addrlen, parent_client->cl_ipaddr, data->authflavor, - parent_server->client->cl_xprt->prot, + rpc_protocol(parent_server->client), parent_server->client->cl_timeout, parent_client->cl_mvops->minor_version, parent_client->net); @@ -1905,12 +1907,14 @@ static int nfs_server_list_show(struct seq_file *m, void *v) if (clp->cl_cons_state != NFS_CS_READY) return 0; + rcu_read_lock(); seq_printf(m, "v%u %s %s %3d %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT), atomic_read(&clp->cl_count), clp->cl_hostname); + rcu_read_unlock(); return 0; } @@ -1993,6 +1997,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) (unsigned long long) server->fsid.major, (unsigned long long) server->fsid.minor); + rcu_read_lock(); seq_printf(m, "v%u %s %s %-7s %-17s %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), @@ -2000,6 +2005,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) dev, fsid, nfs_server_fscache_state(server)); + rcu_read_unlock(); return 0; } diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 667ea7406fd..9c8eca315f4 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -96,8 +96,8 @@ static int nfs4_validate_fspath(struct dentry *dentry, static size_t nfs_parse_server_name(char *string, size_t len, struct sockaddr *sa, size_t salen, struct nfs_server *server) { + struct net *net = rpc_net_ns(server->client); ssize_t ret; - struct net *net = server->client->cl_xprt->xprt_net; ret = rpc_pton(net, string, len, sa, salen); if (ret == 0) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6c8e170e2e6..671510cc14c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3833,6 +3833,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, *p = htonl((u32)clp->cl_boot_time.tv_nsec); for(;;) { + rcu_read_lock(); setclientid.sc_name_len = scnprintf(setclientid.sc_name, sizeof(setclientid.sc_name), "%s/%s %s %s %u", clp->cl_ipaddr, @@ -3849,6 +3850,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); + rcu_read_unlock(); status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status != -NFS4ERR_CLID_INUSE) @@ -5244,11 +5246,16 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) void nfs4_destroy_session(struct nfs4_session *session) { + struct rpc_xprt *xprt; + nfs4_proc_destroy_session(session); + + rcu_read_lock(); + xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); + rcu_read_unlock(); dprintk("%s Destroy backchannel for xprt %p\n", - __func__, session->clp->cl_rpcclient->cl_xprt); - xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, - NFS41_BC_MIN_CALLBACKS); + __func__, xprt); + xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); nfs4_destroy_slot_tables(session); kfree(session); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index c1111a37dc1..bae959e294c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1037,19 +1037,28 @@ static void nfs4_clear_state_manager_bit(struct nfs_client *clp) void nfs4_schedule_state_manager(struct nfs_client *clp) { struct task_struct *task; + char buf[INET6_ADDRSTRLEN + sizeof("-manager") + 1]; if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0) return; __module_get(THIS_MODULE); atomic_inc(&clp->cl_count); - task = kthread_run(nfs4_run_state_manager, clp, "%s-manager", - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_ADDR)); - if (!IS_ERR(task)) - return; - nfs4_clear_state_manager_bit(clp); - nfs_put_client(clp); - module_put(THIS_MODULE); + + /* The rcu_read_lock() is not strictly necessary, as the state + * manager is the only thread that ever changes the rpc_xprt + * after it's initialized. At this point, we're single threaded. */ + rcu_read_lock(); + snprintf(buf, sizeof(buf), "%s-manager", + rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); + task = kthread_run(nfs4_run_state_manager, clp, buf); + if (IS_ERR(task)) { + printk(KERN_ERR "%s: kthread_run: %ld\n", + __func__, PTR_ERR(task)); + nfs4_clear_state_manager_bit(clp); + nfs_put_client(clp); + module_put(THIS_MODULE); + } } /* diff --git a/fs/nfs/super.c b/fs/nfs/super.c index f4ccdae6a0c..7002be11d99 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -53,6 +53,7 @@ #include #include #include +#include #include #include @@ -701,8 +702,10 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, else seq_puts(m, nfs_infop->nostr); } + rcu_read_lock(); seq_printf(m, ",proto=%s", rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID)); + rcu_read_unlock(); if (version == 4) { if (nfss->port != NFS_PORT) seq_printf(m, ",port=%u", nfss->port); @@ -751,9 +754,11 @@ static int nfs_show_options(struct seq_file *m, struct dentry *root) nfs_show_mount_options(m, nfss, 0); + rcu_read_lock(); seq_printf(m, ",addr=%s", rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); return 0; } diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index a4c62e95c72..e3d12b4a031 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -35,7 +35,7 @@ struct rpc_clnt { struct list_head cl_clients; /* Global list of clients */ struct list_head cl_tasks; /* List of tasks */ spinlock_t cl_lock; /* spinlock */ - struct rpc_xprt * cl_xprt; /* transport */ + struct rpc_xprt __rcu * cl_xprt; /* transport */ struct rpc_procinfo * cl_procinfo; /* procedure info */ u32 cl_prog, /* RPC program number */ cl_vers, /* RPC version number */ @@ -156,6 +156,8 @@ struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int rpc_restart_call_prepare(struct rpc_task *); int rpc_restart_call(struct rpc_task *); void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); +int rpc_protocol(struct rpc_clnt *); +struct net * rpc_net_ns(struct rpc_clnt *); size_t rpc_max_payload(struct rpc_clnt *); void rpc_force_rebind(struct rpc_clnt *); size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h index b506936f4ce..6cb2517bcf7 100644 --- a/include/linux/sunrpc/debug.h +++ b/include/linux/sunrpc/debug.h @@ -50,19 +50,32 @@ extern unsigned int nlm_debug; #endif #define dprintk(args...) dfprintk(FACILITY, ## args) +#define dprintk_rcu(args...) dfprintk_rcu(FACILITY, ## args) #undef ifdebug #ifdef RPC_DEBUG # define ifdebug(fac) if (unlikely(rpc_debug & RPCDBG_##fac)) + # define dfprintk(fac, args...) \ do { \ ifdebug(fac) \ printk(KERN_DEFAULT args); \ } while (0) + +# define dfprintk_rcu(fac, args...) \ + do { \ + ifdebug(fac) { \ + rcu_read_lock(); \ + printk(KERN_DEFAULT args); \ + rcu_read_unlock(); \ + } \ + } while (0) + # define RPC_IFDEBUG(x) x #else # define ifdebug(fac) if (0) # define dfprintk(fac, args...) do ; while (0) +# define dfprintk_rcu(fac, args...) do ; while (0) # define RPC_IFDEBUG(x) #endif diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index cb2e5645274..d3ad81f8da5 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -799,7 +799,7 @@ err_unlink_pipe_1: static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt, struct rpc_auth *auth) { - struct net *net = clnt->cl_xprt->xprt_net; + struct net *net = rpc_net_ns(clnt); struct super_block *sb; sb = rpc_get_sb_net(net); @@ -813,7 +813,7 @@ static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt, static int gss_pipes_dentries_create_net(struct rpc_clnt *clnt, struct rpc_auth *auth) { - struct net *net = clnt->cl_xprt->xprt_net; + struct net *net = rpc_net_ns(clnt); struct super_block *sb; int err = 0; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 25c3da53fb6..7783fc0e726 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -81,7 +82,8 @@ static int rpc_ping(struct rpc_clnt *clnt); static void rpc_register_client(struct rpc_clnt *clnt) { - struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + struct net *net = rpc_net_ns(clnt); + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); spin_lock(&sn->rpc_client_lock); list_add(&clnt->cl_clients, &sn->all_clients); @@ -90,7 +92,8 @@ static void rpc_register_client(struct rpc_clnt *clnt) static void rpc_unregister_client(struct rpc_clnt *clnt) { - struct sunrpc_net *sn = net_generic(clnt->cl_xprt->xprt_net, sunrpc_net_id); + struct net *net = rpc_net_ns(clnt); + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); spin_lock(&sn->rpc_client_lock); list_del(&clnt->cl_clients); @@ -109,12 +112,13 @@ static void __rpc_clnt_remove_pipedir(struct rpc_clnt *clnt) static void rpc_clnt_remove_pipedir(struct rpc_clnt *clnt) { + struct net *net = rpc_net_ns(clnt); struct super_block *pipefs_sb; - pipefs_sb = rpc_get_sb_net(clnt->cl_xprt->xprt_net); + pipefs_sb = rpc_get_sb_net(net); if (pipefs_sb) { __rpc_clnt_remove_pipedir(clnt); - rpc_put_sb_net(clnt->cl_xprt->xprt_net); + rpc_put_sb_net(net); } } @@ -155,17 +159,18 @@ static struct dentry *rpc_setup_pipedir_sb(struct super_block *sb, static int rpc_setup_pipedir(struct rpc_clnt *clnt, const char *dir_name) { + struct net *net = rpc_net_ns(clnt); struct super_block *pipefs_sb; struct dentry *dentry; clnt->cl_dentry = NULL; if (dir_name == NULL) return 0; - pipefs_sb = rpc_get_sb_net(clnt->cl_xprt->xprt_net); + pipefs_sb = rpc_get_sb_net(net); if (!pipefs_sb) return 0; dentry = rpc_setup_pipedir_sb(pipefs_sb, clnt, dir_name); - rpc_put_sb_net(clnt->cl_xprt->xprt_net); + rpc_put_sb_net(net); if (IS_ERR(dentry)) return PTR_ERR(dentry); clnt->cl_dentry = dentry; @@ -295,7 +300,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru if (clnt->cl_server == NULL) goto out_no_server; - clnt->cl_xprt = xprt; + rcu_assign_pointer(clnt->cl_xprt, xprt); clnt->cl_procinfo = version->procs; clnt->cl_maxproc = version->nrprocs; clnt->cl_protname = program->name; @@ -310,7 +315,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru INIT_LIST_HEAD(&clnt->cl_tasks); spin_lock_init(&clnt->cl_lock); - if (!xprt_bound(clnt->cl_xprt)) + if (!xprt_bound(xprt)) clnt->cl_autobind = 1; clnt->cl_timeout = xprt->timeout; @@ -477,6 +482,7 @@ struct rpc_clnt * rpc_clone_client(struct rpc_clnt *clnt) { struct rpc_clnt *new; + struct rpc_xprt *xprt; int err = -ENOMEM; new = kmemdup(clnt, sizeof(*new), GFP_KERNEL); @@ -499,18 +505,25 @@ rpc_clone_client(struct rpc_clnt *clnt) if (new->cl_principal == NULL) goto out_no_principal; } + rcu_read_lock(); + xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); + rcu_read_unlock(); + if (xprt == NULL) + goto out_no_transport; + rcu_assign_pointer(new->cl_xprt, xprt); atomic_set(&new->cl_count, 1); err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name); if (err != 0) goto out_no_path; if (new->cl_auth) atomic_inc(&new->cl_auth->au_count); - xprt_get(clnt->cl_xprt); atomic_inc(&clnt->cl_count); rpc_register_client(new); rpciod_up(); return new; out_no_path: + xprt_put(xprt); +out_no_transport: kfree(new->cl_principal); out_no_principal: rpc_free_iostats(new->cl_metrics); @@ -590,7 +603,7 @@ rpc_free_client(struct rpc_clnt *clnt) rpc_free_iostats(clnt->cl_metrics); kfree(clnt->cl_principal); clnt->cl_metrics = NULL; - xprt_put(clnt->cl_xprt); + xprt_put(rcu_dereference_raw(clnt->cl_xprt)); rpciod_down(); kfree(clnt); } @@ -879,13 +892,18 @@ EXPORT_SYMBOL_GPL(rpc_call_start); size_t rpc_peeraddr(struct rpc_clnt *clnt, struct sockaddr *buf, size_t bufsize) { size_t bytes; - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); - bytes = sizeof(xprt->addr); + bytes = xprt->addrlen; if (bytes > bufsize) bytes = bufsize; - memcpy(buf, &clnt->cl_xprt->addr, bytes); - return xprt->addrlen; + memcpy(buf, &xprt->addr, bytes); + rcu_read_unlock(); + + return bytes; } EXPORT_SYMBOL_GPL(rpc_peeraddr); @@ -894,11 +912,16 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr); * @clnt: RPC client structure * @format: address format * + * NB: the lifetime of the memory referenced by the returned pointer is + * the same as the rpc_xprt itself. As long as the caller uses this + * pointer, it must hold the RCU read lock. */ const char *rpc_peeraddr2str(struct rpc_clnt *clnt, enum rpc_display_format_t format) { - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + xprt = rcu_dereference(clnt->cl_xprt); if (xprt->address_strings[format] != NULL) return xprt->address_strings[format]; @@ -910,14 +933,51 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr2str); void rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize) { - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; + + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); if (xprt->ops->set_buffer_size) xprt->ops->set_buffer_size(xprt, sndsize, rcvsize); + rcu_read_unlock(); } EXPORT_SYMBOL_GPL(rpc_setbufsize); -/* - * Return size of largest payload RPC client can support, in bytes +/** + * rpc_protocol - Get transport protocol number for an RPC client + * @clnt: RPC client to query + * + */ +int rpc_protocol(struct rpc_clnt *clnt) +{ + int protocol; + + rcu_read_lock(); + protocol = rcu_dereference(clnt->cl_xprt)->prot; + rcu_read_unlock(); + return protocol; +} +EXPORT_SYMBOL_GPL(rpc_protocol); + +/** + * rpc_net_ns - Get the network namespace for this RPC client + * @clnt: RPC client to query + * + */ +struct net *rpc_net_ns(struct rpc_clnt *clnt) +{ + struct net *ret; + + rcu_read_lock(); + ret = rcu_dereference(clnt->cl_xprt)->xprt_net; + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL_GPL(rpc_net_ns); + +/** + * rpc_max_payload - Get maximum payload size for a transport, in bytes + * @clnt: RPC client to query * * For stream transports, this is one RPC record fragment (see RFC * 1831), as we don't support multi-record requests yet. For datagram @@ -926,7 +986,12 @@ EXPORT_SYMBOL_GPL(rpc_setbufsize); */ size_t rpc_max_payload(struct rpc_clnt *clnt) { - return clnt->cl_xprt->max_payload; + size_t ret; + + rcu_read_lock(); + ret = rcu_dereference(clnt->cl_xprt)->max_payload; + rcu_read_unlock(); + return ret; } EXPORT_SYMBOL_GPL(rpc_max_payload); @@ -937,8 +1002,11 @@ EXPORT_SYMBOL_GPL(rpc_max_payload); */ void rpc_force_rebind(struct rpc_clnt *clnt) { - if (clnt->cl_autobind) - xprt_clear_bound(clnt->cl_xprt); + if (clnt->cl_autobind) { + rcu_read_lock(); + xprt_clear_bound(rcu_dereference(clnt->cl_xprt)); + rcu_read_unlock(); + } } EXPORT_SYMBOL_GPL(rpc_force_rebind); diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index ac9ee159073..3d30943ed6d 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -402,12 +403,14 @@ rpc_show_info(struct seq_file *m, void *v) { struct rpc_clnt *clnt = m->private; + rcu_read_lock(); seq_printf(m, "RPC server: %s\n", clnt->cl_server); seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname, clnt->cl_prog, clnt->cl_vers); seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR)); seq_printf(m, "protocol: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_PROTO)); seq_printf(m, "port: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_PORT)); + rcu_read_unlock(); return 0; } diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index b1f08bd6788..4f8af63798a 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -620,9 +620,10 @@ static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbi static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) { struct rpc_clnt *parent = clnt->cl_parent; + struct rpc_xprt *xprt = rcu_dereference(clnt->cl_xprt); while (parent != clnt) { - if (parent->cl_xprt != clnt->cl_xprt) + if (rcu_dereference(parent->cl_xprt) != xprt) break; if (clnt->cl_autobind) break; @@ -653,8 +654,12 @@ void rpcb_getport_async(struct rpc_task *task) size_t salen; int status; - clnt = rpcb_find_transport_owner(task->tk_client); - xprt = clnt->cl_xprt; + rcu_read_lock(); + do { + clnt = rpcb_find_transport_owner(task->tk_client); + xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); + } while (xprt == NULL); + rcu_read_unlock(); dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", task->tk_pid, __func__, @@ -667,6 +672,7 @@ void rpcb_getport_async(struct rpc_task *task) if (xprt_test_and_set_binding(xprt)) { dprintk("RPC: %5u %s: waiting for another binder\n", task->tk_pid, __func__); + xprt_put(xprt); return; } @@ -734,7 +740,7 @@ void rpcb_getport_async(struct rpc_task *task) switch (bind_version) { case RPCBVERS_4: case RPCBVERS_3: - map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); + map->r_netid = xprt->address_strings[RPC_DISPLAY_NETID]; map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC); map->r_owner = ""; break; @@ -763,6 +769,7 @@ bailout_release_client: bailout_nofree: rpcb_wake_rpcbind_waiters(xprt, status); task->tk_status = status; + xprt_put(xprt); } EXPORT_SYMBOL_GPL(rpcb_getport_async); diff --git a/net/sunrpc/stats.c b/net/sunrpc/stats.c index 1eb3304bc10..bc2068ee795 100644 --- a/net/sunrpc/stats.c +++ b/net/sunrpc/stats.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "netns.h" @@ -179,7 +180,7 @@ static void _print_name(struct seq_file *seq, unsigned int op, void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) { struct rpc_iostats *stats = clnt->cl_metrics; - struct rpc_xprt *xprt = clnt->cl_xprt; + struct rpc_xprt *xprt; unsigned int op, maxproc = clnt->cl_maxproc; if (!stats) @@ -189,8 +190,11 @@ void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) seq_printf(seq, "p/v: %u/%u (%s)\n", clnt->cl_prog, clnt->cl_vers, clnt->cl_protname); + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); if (xprt) xprt->ops->print_stats(xprt, seq); + rcu_read_unlock(); seq_printf(seq, "\tper-op statistics\n"); for (op = 0; op < maxproc; op++) { -- cgit v1.2.3-70-g09d2 From 31b8e2aec099f22d40277c424d8c24b2a4c95fce Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 1 Mar 2012 17:01:23 -0500 Subject: NFS: Make clientaddr= optional For NFSv4 mounts, the clientaddr= mount option has always been required. Now we have rpc_localaddr() in the kernel, which was modeled after the same logic in the mount.nfs command that constructs the clientaddr= mount option. If user space doesn't provide a clientaddr= mount option, the kernel can now construct its own. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 15 +++++++++++++++ fs/nfs/super.c | 6 ------ 2 files changed, 15 insertions(+), 6 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d038dc5916e..d30dcbfb6b2 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1346,6 +1346,7 @@ int nfs4_init_client(struct nfs_client *clp, rpc_authflavor_t authflavour, int noresvport) { + char buf[INET6_ADDRSTRLEN + 1]; int error; if (clp->cl_cons_state == NFS_CS_READY) { @@ -1361,6 +1362,20 @@ int nfs4_init_client(struct nfs_client *clp, 1, noresvport); if (error < 0) goto error; + + /* If no clientaddr= option was specified, find a usable cb address */ + if (ip_addr == NULL) { + struct sockaddr_storage cb_addr; + struct sockaddr *sap = (struct sockaddr *)&cb_addr; + + error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr)); + if (error < 0) + goto error; + error = rpc_ntop(sap, buf, sizeof(buf)); + if (error < 0) + goto error; + ip_addr = (const char *)buf; + } strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr)); error = nfs_idmap_new(clp); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 7002be11d99..3935a371f5a 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2557,12 +2557,6 @@ static int nfs4_validate_text_mount_data(void *options, return -EINVAL; } - if (args->client_address == NULL) { - dfprintk(MOUNT, - "NFS4: mount program didn't pass callback address\n"); - return -EINVAL; - } - return nfs_parse_devname(dev_name, &args->nfs_server.hostname, NFS4_MAXNAMLEN, -- cgit v1.2.3-70-g09d2 From 17280175c587469b34757263c7cfc608f0ea2334 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 11 Mar 2012 13:11:00 -0400 Subject: NFS: Fix a number of sparse warnings Fix a number of "warning: symbol 'foo' was not declared. Should it be static?" conditions. Fix 2 cases of "warning: Using plain integer as NULL pointer" fs/nfs/delegation.c:263:31: warning: restricted fmode_t degrades to integer - We want to allow upgrades to a WRITE delegation, but should otherwise consider servers that hand out duplicate delegations to be borken. Signed-off-by: Trond Myklebust --- fs/nfs/callback.c | 4 ++-- fs/nfs/client.c | 5 ++--- fs/nfs/delegation.c | 5 ++++- fs/nfs/dns_resolve.c | 1 + fs/nfs/idmap.c | 8 ++++---- fs/nfs/nfs3acl.c | 2 +- fs/nfs/nfs4filelayout.c | 10 +++++----- fs/nfs/nfs4filelayoutdev.c | 4 ++-- fs/nfs/nfs4proc.c | 23 ++++++++++++----------- fs/nfs/nfs4state.c | 3 ++- fs/nfs/objlayout/objlayout.c | 2 +- fs/nfs/pnfs_dev.c | 2 +- fs/nfs/unlink.c | 2 +- 13 files changed, 38 insertions(+), 33 deletions(-) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 2afe23349c7..eb95f5091c1 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -101,7 +101,7 @@ nfs4_callback_svc(void *vrqstp) /* * Prepare to bring up the NFSv4 callback service */ -struct svc_rqst * +static struct svc_rqst * nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { int ret; @@ -172,7 +172,7 @@ nfs41_callback_svc(void *vrqstp) /* * Bring up the NFSv4.1 callback service */ -struct svc_rqst * +static struct svc_rqst * nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { struct svc_rqst *rqstp; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d30dcbfb6b2..f1f047c376d 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -443,9 +443,8 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1, } /* Common match routine for v4.0 and v4.1 callback services */ -bool -nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp, - u32 minorversion) +static bool nfs4_cb_match_client(const struct sockaddr *addr, + struct nfs_client *clp, u32 minorversion) { struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 12de88353ee..89af1d26927 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -256,11 +256,14 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct /* * Deal with broken servers that hand out two * delegations for the same file. + * Allow for upgrades to a WRITE delegation, but + * nothing else. */ dfprintk(FILE, "%s: server %s handed out " "a duplicate delegation!\n", __func__, clp->cl_hostname); - if (delegation->type <= old_delegation->type) { + if (delegation->type == old_delegation->type || + !(delegation->type & FMODE_WRITE)) { freeme = delegation; delegation = NULL; goto out; diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c index fcd8f1d7430..b3924b8a600 100644 --- a/fs/nfs/dns_resolve.c +++ b/fs/nfs/dns_resolve.c @@ -10,6 +10,7 @@ #include #include +#include "dns_resolve.h" ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, struct sockaddr *sa, size_t salen) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index f72c1fc074e..f9f89fc83ee 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -54,8 +54,8 @@ /* Default cache timeout is 10 minutes */ unsigned int nfs_idmap_cache_timeout = 600; -const struct cred *id_resolver_cache; -struct key_type key_type_id_resolver_legacy; +static const struct cred *id_resolver_cache; +static struct key_type key_type_id_resolver_legacy; /** @@ -160,7 +160,7 @@ static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen) return snprintf(buf, buflen, "%u", id); } -struct key_type key_type_id_resolver = { +static struct key_type key_type_id_resolver = { .name = "id_resolver", .instantiate = user_instantiate, .match = user_match, @@ -381,7 +381,7 @@ static const struct rpc_pipe_ops idmap_upcall_ops = { .destroy_msg = idmap_pipe_destroy_msg, }; -struct key_type key_type_id_resolver_legacy = { +static struct key_type key_type_id_resolver_legacy = { .name = "id_resolver", .instantiate = user_instantiate, .match = user_match, diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 7ef23979896..e4498dc351a 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -192,7 +192,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) .pages = pages, }; struct nfs3_getaclres res = { - 0 + NULL, }; struct rpc_message msg = { .rpc_argp = &args, diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 716fac6bc08..379a085f8f2 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -323,21 +323,21 @@ static void filelayout_commit_release(void *data) nfs_commitdata_release(wdata); } -struct rpc_call_ops filelayout_read_call_ops = { +static const struct rpc_call_ops filelayout_read_call_ops = { .rpc_call_prepare = filelayout_read_prepare, .rpc_call_done = filelayout_read_call_done, .rpc_count_stats = filelayout_read_count_stats, .rpc_release = filelayout_read_release, }; -struct rpc_call_ops filelayout_write_call_ops = { +static const struct rpc_call_ops filelayout_write_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, .rpc_count_stats = filelayout_write_count_stats, .rpc_release = filelayout_write_release, }; -struct rpc_call_ops filelayout_commit_call_ops = { +static const struct rpc_call_ops filelayout_commit_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, .rpc_count_stats = filelayout_write_count_stats, @@ -723,7 +723,7 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, return (p_stripe == r_stripe); } -void +static void filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { @@ -740,7 +740,7 @@ filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, nfs_pageio_reset_read_mds(pgio); } -void +static void filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index 41677f0bf79..a866bbd2890 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -45,7 +45,7 @@ * - incremented when a device id maps a data server already in the cache. * - decremented when deviceid is removed from the cache. */ -DEFINE_SPINLOCK(nfs4_ds_cache_lock); +static DEFINE_SPINLOCK(nfs4_ds_cache_lock); static LIST_HEAD(nfs4_data_server_cache); /* Debug routines */ @@ -108,7 +108,7 @@ same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) return false; } -bool +static bool _same_data_server_addrs_locked(const struct list_head *dsaddrs1, const struct list_head *dsaddrs2) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3bf5593741e..36a7cda0344 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -677,12 +677,12 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) nfs41_sequence_done(task, data->seq_res); } -struct rpc_call_ops nfs41_call_sync_ops = { +static const struct rpc_call_ops nfs41_call_sync_ops = { .rpc_call_prepare = nfs41_call_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; -struct rpc_call_ops nfs41_call_priv_sync_ops = { +static const struct rpc_call_ops nfs41_call_priv_sync_ops = { .rpc_call_prepare = nfs41_call_priv_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; @@ -4770,7 +4770,7 @@ static void nfs4_release_lockowner_release(void *calldata) kfree(calldata); } -const struct rpc_call_ops nfs4_release_lockowner_ops = { +static const struct rpc_call_ops nfs4_release_lockowner_ops = { .rpc_release = nfs4_release_lockowner_release, }; @@ -4910,7 +4910,8 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct return status; } -int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) +static int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, + struct nfs4_secinfo_flavors *flavors) { struct nfs4_exception exception = { }; int err; @@ -5096,7 +5097,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) dprintk("<-- %s\n", __func__); } -struct rpc_call_ops nfs4_get_lease_time_ops = { +static const struct rpc_call_ops nfs4_get_lease_time_ops = { .rpc_call_prepare = nfs4_get_lease_time_prepare, .rpc_call_done = nfs4_get_lease_time_done, }; @@ -6319,7 +6320,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1, } -struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6329,7 +6330,7 @@ struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6340,7 +6341,7 @@ struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs4_open_expired, @@ -6350,7 +6351,7 @@ struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs41_open_expired, @@ -6360,14 +6361,14 @@ struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { .sched_state_renewal = nfs4_proc_async_renew, .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, .renew_lease = nfs4_proc_renew, }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { .sched_state_renewal = nfs41_proc_async_sequence, .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, .renew_lease = nfs4_proc_sequence, diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 5fa43cd9bfc..7c586070d02 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -876,7 +876,8 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) if (fl->fl_flags & FL_POSIX) lsp = nfs4_get_lock_state(state, fl->fl_owner, 0, NFS4_POSIX_LOCK_TYPE); else if (fl->fl_flags & FL_FLOCK) - lsp = nfs4_get_lock_state(state, 0, fl->fl_pid, NFS4_FLOCK_LOCK_TYPE); + lsp = nfs4_get_lock_state(state, NULL, fl->fl_pid, + NFS4_FLOCK_LOCK_TYPE); else return -EINVAL; if (lsp == NULL) diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 2bd185277ad..157c47e277e 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -156,7 +156,7 @@ last_byte_offset(u64 start, u64 len) return end > start ? end - 1 : NFS4_MAX_UINT64; } -void _fix_verify_io_params(struct pnfs_layout_segment *lseg, +static void _fix_verify_io_params(struct pnfs_layout_segment *lseg, struct page ***p_pages, unsigned *p_pgbase, u64 offset, unsigned long count) { diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 4f359d2a26e..6b4cd384930 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -92,7 +92,7 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, * @clp nfs_client associated with deviceid * @id deviceid to look up */ -struct nfs4_deviceid_node * +static struct nfs4_deviceid_node * _find_get_deviceid(const struct pnfs_layoutdriver_type *ld, const struct nfs_client *clp, const struct nfs4_deviceid *id, long hash) diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 490613b709b..fae71c9f505 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -108,7 +108,7 @@ static void nfs_async_unlink_release(void *calldata) } #if defined(CONFIG_NFS_V4_1) -void nfs_unlink_prepare(struct rpc_task *task, void *calldata) +static void nfs_unlink_prepare(struct rpc_task *task, void *calldata) { struct nfs_unlinkdata *data = calldata; struct nfs_server *server = NFS_SERVER(data->dir); -- cgit v1.2.3-70-g09d2 From 4b7c8dd205d6df1629ccde9f6dcf6a85d34c37ff Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 12 Mar 2012 11:28:24 -0400 Subject: NFS: Only define some function when v4.1 is enabled Now that the nfs4_cb_match_client() function is static, gcc notices that it is only used when CONFIG_NFS_V4_1 is enabled. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/nfs/client.c') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index f1f047c376d..2f378487ccd 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -404,6 +404,7 @@ static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1, (sin1->sin_port == sin2->sin_port); } +#if defined(CONFIG_NFS_V4_1) /* * Test if two socket addresses represent the same actual socket, * by comparing (only) relevant fields, excluding the port number. @@ -422,6 +423,7 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, } return 0; } +#endif /* CONFIG_NFS_V4_1 */ /* * Test if two socket addresses represent the same actual socket, @@ -442,6 +444,7 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1, return 0; } +#if defined(CONFIG_NFS_V4_1) /* Common match routine for v4.0 and v4.1 callback services */ static bool nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp, u32 minorversion) @@ -464,6 +467,7 @@ static bool nfs4_cb_match_client(const struct sockaddr *addr, return true; } +#endif /* CONFIG_NFS_V4_1 */ /* * Find an nfs_client on the list that matches the initialisation data -- cgit v1.2.3-70-g09d2