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-rw-r--r--fs/nfs/dir.c13
-rw-r--r--fs/nfs/getroot.c42
-rw-r--r--fs/nfs/inode.c9
-rw-r--r--fs/nfs/internal.h21
-rw-r--r--fs/nfs/namespace.c66
-rw-r--r--fs/nfs/nfs4_fs.h10
-rw-r--r--fs/nfs/nfs4filelayoutdev.c4
-rw-r--r--fs/nfs/nfs4namespace.c41
-rw-r--r--fs/nfs/nfs4proc.c131
-rw-r--r--fs/nfs/nfs4state.c29
-rw-r--r--fs/nfs/nfs4xdr.c4
-rw-r--r--fs/nfs/nfsroot.c29
-rw-r--r--fs/nfs/super.c194
-rw-r--r--fs/nfs/unlink.c22
-rw-r--r--fs/nfs/write.c2
15 files changed, 387 insertions, 230 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 2c3eb33b904..abdf38d5971 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1169,11 +1169,23 @@ static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode)
iput(inode);
}
+static void nfs_d_release(struct dentry *dentry)
+{
+ /* free cached devname value, if it survived that far */
+ if (unlikely(dentry->d_fsdata)) {
+ if (dentry->d_flags & DCACHE_NFSFS_RENAMED)
+ WARN_ON(1);
+ else
+ kfree(dentry->d_fsdata);
+ }
+}
+
const struct dentry_operations nfs_dentry_operations = {
.d_revalidate = nfs_lookup_revalidate,
.d_delete = nfs_dentry_delete,
.d_iput = nfs_dentry_iput,
.d_automount = nfs_d_automount,
+ .d_release = nfs_d_release,
};
static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
@@ -1248,6 +1260,7 @@ const struct dentry_operations nfs4_dentry_operations = {
.d_delete = nfs_dentry_delete,
.d_iput = nfs_dentry_iput,
.d_automount = nfs_d_automount,
+ .d_release = nfs_d_release,
};
/*
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b5ffe8fa291..1084792bc0f 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -75,18 +75,25 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
/*
* get an NFS2/NFS3 root dentry from the root filehandle
*/
-struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
+struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh,
+ const char *devname)
{
struct nfs_server *server = NFS_SB(sb);
struct nfs_fsinfo fsinfo;
struct dentry *ret;
struct inode *inode;
+ void *name = kstrdup(devname, GFP_KERNEL);
int error;
+ if (!name)
+ return ERR_PTR(-ENOMEM);
+
/* get the actual root for this mount */
fsinfo.fattr = nfs_alloc_fattr();
- if (fsinfo.fattr == NULL)
+ if (fsinfo.fattr == NULL) {
+ kfree(name);
return ERR_PTR(-ENOMEM);
+ }
error = server->nfs_client->rpc_ops->getroot(server, mntfh, &fsinfo);
if (error < 0) {
@@ -119,7 +126,15 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
}
security_d_instantiate(ret, inode);
+ spin_lock(&ret->d_lock);
+ if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
+ ret->d_fsdata = name;
+ name = NULL;
+ }
+ spin_unlock(&ret->d_lock);
out:
+ if (name)
+ kfree(name);
nfs_free_fattr(fsinfo.fattr);
return ret;
}
@@ -169,27 +184,35 @@ out:
/*
* get an NFS4 root dentry from the root filehandle
*/
-struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
+struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh,
+ const char *devname)
{
struct nfs_server *server = NFS_SB(sb);
struct nfs_fattr *fattr = NULL;
struct dentry *ret;
struct inode *inode;
+ void *name = kstrdup(devname, GFP_KERNEL);
int error;
dprintk("--> nfs4_get_root()\n");
+ if (!name)
+ return ERR_PTR(-ENOMEM);
+
/* get the info about the server and filesystem */
error = nfs4_server_capabilities(server, mntfh);
if (error < 0) {
dprintk("nfs_get_root: getcaps error = %d\n",
-error);
+ kfree(name);
return ERR_PTR(error);
}
fattr = nfs_alloc_fattr();
- if (fattr == NULL)
- return ERR_PTR(-ENOMEM);;
+ if (fattr == NULL) {
+ kfree(name);
+ return ERR_PTR(-ENOMEM);
+ }
/* get the actual root for this mount */
error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
@@ -223,8 +246,15 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
}
security_d_instantiate(ret, inode);
-
+ spin_lock(&ret->d_lock);
+ if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
+ ret->d_fsdata = name;
+ name = NULL;
+ }
+ spin_unlock(&ret->d_lock);
out:
+ if (name)
+ kfree(name);
nfs_free_fattr(fattr);
dprintk("<-- nfs4_get_root()\n");
return ret;
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 1cc600e77bb..01768e5e2c9 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -37,6 +37,7 @@
#include <linux/inet.h>
#include <linux/nfs_xdr.h>
#include <linux/slab.h>
+#include <linux/compat.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@@ -89,7 +90,11 @@ int nfs_wait_bit_killable(void *word)
*/
u64 nfs_compat_user_ino64(u64 fileid)
{
- int ino;
+#ifdef CONFIG_COMPAT
+ compat_ulong_t ino;
+#else
+ unsigned long ino;
+#endif
if (enable_ino64)
return fileid;
@@ -1513,7 +1518,7 @@ static int nfsiod_start(void)
{
struct workqueue_struct *wq;
dprintk("RPC: creating workqueue nfsiod\n");
- wq = alloc_workqueue("nfsiod", WQ_RESCUER, 0);
+ wq = alloc_workqueue("nfsiod", WQ_MEM_RECLAIM, 0);
if (wq == NULL)
return -ENOMEM;
nfsiod_workqueue = wq;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index cf9fdbdabc6..e94ad22da5d 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -163,10 +163,10 @@ static inline void nfs_fs_proc_exit(void)
/* nfs4namespace.c */
#ifdef CONFIG_NFS_V4
-extern struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry);
+extern struct vfsmount *nfs_do_refmount(struct dentry *dentry);
#else
static inline
-struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
+struct vfsmount *nfs_do_refmount(struct dentry *dentry)
{
return ERR_PTR(-ENOENT);
}
@@ -247,16 +247,16 @@ extern void nfs_sb_active(struct super_block *sb);
extern void nfs_sb_deactive(struct super_block *sb);
/* namespace.c */
-extern char *nfs_path(const char *base,
- const struct dentry *droot,
- const struct dentry *dentry,
+extern char *nfs_path(char **p, struct dentry *dentry,
char *buffer, ssize_t buflen);
extern struct vfsmount *nfs_d_automount(struct path *path);
/* getroot.c */
-extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *);
+extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
+ const char *);
#ifdef CONFIG_NFS_V4
-extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *);
+extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
+ const char *);
extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh);
#endif
@@ -288,12 +288,11 @@ extern int _nfs4_call_sync_session(struct nfs_server *server,
/*
* Determine the device name as a string
*/
-static inline char *nfs_devname(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
+static inline char *nfs_devname(struct dentry *dentry,
char *buffer, ssize_t buflen)
{
- return nfs_path(mnt_parent->mnt_devname, mnt_parent->mnt_root,
- dentry, buffer, buflen);
+ char *dummy;
+ return nfs_path(&dummy, dentry, buffer, buflen);
}
/*
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index f32b8603dca..c0b8344db0c 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -25,33 +25,30 @@ static LIST_HEAD(nfs_automount_list);
static DECLARE_DELAYED_WORK(nfs_automount_task, nfs_expire_automounts);
int nfs_mountpoint_expiry_timeout = 500 * HZ;
-static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
+static struct vfsmount *nfs_do_submount(struct dentry *dentry,
struct nfs_fh *fh,
struct nfs_fattr *fattr);
/*
* nfs_path - reconstruct the path given an arbitrary dentry
- * @base - arbitrary string to prepend to the path
- * @droot - pointer to root dentry for mountpoint
+ * @base - used to return pointer to the end of devname part of path
* @dentry - pointer to dentry
* @buffer - result buffer
* @buflen - length of buffer
*
- * Helper function for constructing the path from the
- * root dentry to an arbitrary hashed dentry.
+ * Helper function for constructing the server pathname
+ * by arbitrary hashed dentry.
*
* This is mainly for use in figuring out the path on the
- * server side when automounting on top of an existing partition.
+ * server side when automounting on top of an existing partition
+ * and in generating /proc/mounts and friends.
*/
-char *nfs_path(const char *base,
- const struct dentry *droot,
- const struct dentry *dentry,
- char *buffer, ssize_t buflen)
+char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen)
{
char *end;
int namelen;
unsigned seq;
+ const char *base;
rename_retry:
end = buffer+buflen;
@@ -60,7 +57,10 @@ rename_retry:
seq = read_seqbegin(&rename_lock);
rcu_read_lock();
- while (!IS_ROOT(dentry) && dentry != droot) {
+ while (1) {
+ spin_lock(&dentry->d_lock);
+ if (IS_ROOT(dentry))
+ break;
namelen = dentry->d_name.len;
buflen -= namelen + 1;
if (buflen < 0)
@@ -68,27 +68,47 @@ rename_retry:
end -= namelen;
memcpy(end, dentry->d_name.name, namelen);
*--end = '/';
+ spin_unlock(&dentry->d_lock);
dentry = dentry->d_parent;
}
- rcu_read_unlock();
- if (read_seqretry(&rename_lock, seq))
+ if (read_seqretry(&rename_lock, seq)) {
+ spin_unlock(&dentry->d_lock);
+ rcu_read_unlock();
goto rename_retry;
+ }
if (*end != '/') {
- if (--buflen < 0)
+ if (--buflen < 0) {
+ spin_unlock(&dentry->d_lock);
+ rcu_read_unlock();
goto Elong;
+ }
*--end = '/';
}
+ *p = end;
+ base = dentry->d_fsdata;
+ if (!base) {
+ spin_unlock(&dentry->d_lock);
+ rcu_read_unlock();
+ WARN_ON(1);
+ return end;
+ }
namelen = strlen(base);
/* Strip off excess slashes in base string */
while (namelen > 0 && base[namelen - 1] == '/')
namelen--;
buflen -= namelen;
- if (buflen < 0)
+ if (buflen < 0) {
+ spin_lock(&dentry->d_lock);
+ rcu_read_unlock();
goto Elong;
+ }
end -= namelen;
memcpy(end, base, namelen);
+ spin_unlock(&dentry->d_lock);
+ rcu_read_unlock();
return end;
Elong_unlock:
+ spin_lock(&dentry->d_lock);
rcu_read_unlock();
if (read_seqretry(&rename_lock, seq))
goto rename_retry;
@@ -143,9 +163,9 @@ struct vfsmount *nfs_d_automount(struct path *path)
}
if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
- mnt = nfs_do_refmount(path->mnt, path->dentry);
+ mnt = nfs_do_refmount(path->dentry);
else
- mnt = nfs_do_submount(path->mnt, path->dentry, fh, fattr);
+ mnt = nfs_do_submount(path->dentry, fh, fattr);
if (IS_ERR(mnt))
goto out;
@@ -209,19 +229,17 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
/**
* nfs_do_submount - set up mountpoint when crossing a filesystem boundary
- * @mnt_parent - mountpoint of parent directory
* @dentry - parent directory
* @fh - filehandle for new root dentry
* @fattr - attributes for new root inode
*
*/
-static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
+static struct vfsmount *nfs_do_submount(struct dentry *dentry,
struct nfs_fh *fh,
struct nfs_fattr *fattr)
{
struct nfs_clone_mount mountdata = {
- .sb = mnt_parent->mnt_sb,
+ .sb = dentry->d_sb,
.dentry = dentry,
.fh = fh,
.fattr = fattr,
@@ -237,11 +255,11 @@ static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
dentry->d_name.name);
if (page == NULL)
goto out;
- devname = nfs_devname(mnt_parent, dentry, page, PAGE_SIZE);
+ devname = nfs_devname(dentry, page, PAGE_SIZE);
mnt = (struct vfsmount *)devname;
if (IS_ERR(devname))
goto free_page;
- mnt = nfs_do_clone_mount(NFS_SB(mnt_parent->mnt_sb), devname, &mountdata);
+ mnt = nfs_do_clone_mount(NFS_SB(dentry->d_sb), devname, &mountdata);
free_page:
free_page((unsigned long)page);
out:
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 7a747407314..1be36cf65bf 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -298,6 +298,11 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp);
#if defined(CONFIG_NFS_V4_1)
struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
+extern void nfs4_schedule_session_recovery(struct nfs4_session *);
+#else
+static inline void nfs4_schedule_session_recovery(struct nfs4_session *session)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
@@ -307,10 +312,9 @@ extern void nfs4_put_open_state(struct nfs4_state *);
extern void nfs4_close_state(struct path *, struct nfs4_state *, fmode_t);
extern void nfs4_close_sync(struct path *, struct nfs4_state *, fmode_t);
extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
-extern void nfs4_schedule_state_recovery(struct nfs_client *);
+extern void nfs4_schedule_lease_recovery(struct nfs_client *);
extern void nfs4_schedule_state_manager(struct nfs_client *);
-extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
-extern int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state);
+extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
extern void nfs41_handle_recall_slot(struct nfs_client *clp);
extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index f5c9b125e8c..b73c34375f6 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -219,6 +219,10 @@ decode_and_add_ds(__be32 **pp, struct inode *inode)
goto out_err;
}
buf = kmalloc(rlen + 1, GFP_KERNEL);
+ if (!buf) {
+ dprintk("%s: Not enough memory\n", __func__);
+ goto out_err;
+ }
buf[rlen] = '\0';
memcpy(buf, r_addr, rlen);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 3c2a1724fbd..bb80c49b653 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -54,33 +54,29 @@ Elong:
/*
* Determine the mount path as a string
*/
-static char *nfs4_path(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
- char *buffer, ssize_t buflen)
+static char *nfs4_path(struct dentry *dentry, char *buffer, ssize_t buflen)
{
- const char *srvpath;
-
- srvpath = strchr(mnt_parent->mnt_devname, ':');
- if (srvpath)
- srvpath++;
- else
- srvpath = mnt_parent->mnt_devname;
-
- return nfs_path(srvpath, mnt_parent->mnt_root, dentry, buffer, buflen);
+ char *limit;
+ char *path = nfs_path(&limit, dentry, buffer, buflen);
+ if (!IS_ERR(path)) {
+ char *colon = strchr(path, ':');
+ if (colon && colon < limit)
+ path = colon + 1;
+ }
+ return path;
}
/*
* Check that fs_locations::fs_root [RFC3530 6.3] is a prefix for what we
* believe to be the server path to this dentry
*/
-static int nfs4_validate_fspath(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
+static int nfs4_validate_fspath(struct dentry *dentry,
const struct nfs4_fs_locations *locations,
char *page, char *page2)
{
const char *path, *fs_path;
- path = nfs4_path(mnt_parent, dentry, page, PAGE_SIZE);
+ path = nfs4_path(dentry, page, PAGE_SIZE);
if (IS_ERR(path))
return PTR_ERR(path);
@@ -165,20 +161,18 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
/**
* nfs_follow_referral - set up mountpoint when hitting a referral on moved error
- * @mnt_parent - mountpoint of parent directory
* @dentry - parent directory
* @locations - array of NFSv4 server location information
*
*/
-static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
- const struct dentry *dentry,
+static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
const struct nfs4_fs_locations *locations)
{
struct vfsmount *mnt = ERR_PTR(-ENOENT);
struct nfs_clone_mount mountdata = {
- .sb = mnt_parent->mnt_sb,
+ .sb = dentry->d_sb,
.dentry = dentry,
- .authflavor = NFS_SB(mnt_parent->mnt_sb)->client->cl_auth->au_flavor,
+ .authflavor = NFS_SB(dentry->d_sb)->client->cl_auth->au_flavor,
};
char *page = NULL, *page2 = NULL;
int loc, error;
@@ -198,7 +192,7 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
goto out;
/* Ensure fs path is a prefix of current dentry path */
- error = nfs4_validate_fspath(mnt_parent, dentry, locations, page, page2);
+ error = nfs4_validate_fspath(dentry, locations, page, page2);
if (error < 0) {
mnt = ERR_PTR(error);
goto out;
@@ -225,11 +219,10 @@ out:
/*
* nfs_do_refmount - handle crossing a referral on server
- * @mnt_parent - mountpoint of referral
* @dentry - dentry of referral
*
*/
-struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
+struct vfsmount *nfs_do_refmount(struct dentry *dentry)
{
struct vfsmount *mnt = ERR_PTR(-ENOMEM);
struct dentry *parent;
@@ -262,7 +255,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr
fs_locations->fs_path.ncomponents <= 0)
goto out_free;
- mnt = nfs_follow_referral(mnt_parent, dentry, fs_locations);
+ mnt = nfs_follow_referral(dentry, fs_locations);
out_free:
__free_page(page);
kfree(fs_locations);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 78936a8f40a..0a07e353a96 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -256,12 +256,13 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
- nfs4_state_mark_reclaim_nograce(clp, state);
- goto do_state_recovery;
+ nfs4_schedule_stateid_recovery(server, state);
+ goto wait_on_recovery;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_EXPIRED:
- goto do_state_recovery;
+ nfs4_schedule_lease_recovery(clp);
+ goto wait_on_recovery;
#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
@@ -272,7 +273,7 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR: %d Reset session\n", __func__,
errorcode);
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_session_recovery(clp->cl_session);
exception->retry = 1;
break;
#endif /* defined(CONFIG_NFS_V4_1) */
@@ -295,8 +296,7 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
}
/* We failed to handle the error */
return nfs4_map_errors(ret);
-do_state_recovery:
- nfs4_schedule_state_recovery(clp);
+wait_on_recovery:
ret = nfs4_wait_clnt_recover(clp);
if (ret == 0)
exception->retry = 1;
@@ -435,8 +435,8 @@ static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *
clp = res->sr_session->clp;
do_renew_lease(clp, timestamp);
/* Check sequence flags */
- if (atomic_read(&clp->cl_count) > 1)
- nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
+ if (res->sr_status_flags != 0)
+ nfs4_schedule_lease_recovery(clp);
break;
case -NFS4ERR_DELAY:
/* The server detected a resend of the RPC call and
@@ -1255,14 +1255,13 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
- nfs4_schedule_state_recovery(
- server->nfs_client);
+ nfs4_schedule_session_recovery(server->nfs_client->cl_session);
goto out;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
- nfs4_schedule_state_recovery(server->nfs_client);
+ nfs4_schedule_lease_recovery(server->nfs_client);
goto out;
case -ERESTARTSYS:
/*
@@ -1271,7 +1270,7 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
*/
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
- nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+ nfs4_schedule_stateid_recovery(server, state);
case -EKEYEXPIRED:
/*
* User RPCSEC_GSS context has expired.
@@ -1587,7 +1586,7 @@ static int nfs4_recover_expired_lease(struct nfs_server *server)
if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
!test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
break;
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_state_manager(clp);
ret = -EIO;
}
return ret;
@@ -3178,7 +3177,7 @@ static void nfs4_renew_done(struct rpc_task *task, void *calldata)
if (task->tk_status < 0) {
/* Unless we're shutting down, schedule state recovery! */
if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_lease_recovery(clp);
return;
}
do_renew_lease(clp, timestamp);
@@ -3252,6 +3251,35 @@ static void buf_to_pages(const void *buf, size_t buflen,
}
}
+static int buf_to_pages_noslab(const void *buf, size_t buflen,
+ struct page **pages, unsigned int *pgbase)
+{
+ struct page *newpage, **spages;
+ int rc = 0;
+ size_t len;
+ spages = pages;
+
+ do {
+ len = min_t(size_t, PAGE_CACHE_SIZE, buflen);
+ newpage = alloc_page(GFP_KERNEL);
+
+ if (newpage == NULL)
+ goto unwind;
+ memcpy(page_address(newpage), buf, len);
+ buf += len;
+ buflen -= len;
+ *pages++ = newpage;
+ rc++;
+ } while (buflen != 0);
+
+ return rc;
+
+unwind:
+ for(; rc > 0; rc--)
+ __free_page(spages[rc-1]);
+ return -ENOMEM;
+}
+
struct nfs4_cached_acl {
int cached;
size_t len;
@@ -3420,13 +3448,23 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
.rpc_argp = &arg,
.rpc_resp = &res,
};
- int ret;
+ int ret, i;
if (!nfs4_server_supports_acls(server))
return -EOPNOTSUPP;
+ i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
+ if (i < 0)
+ return i;
nfs_inode_return_delegation(inode);
- buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
ret = nfs4_call_sync(server, &msg, &arg, &res, 1);
+
+ /*
+ * Free each page after tx, so the only ref left is
+ * held by the network stack
+ */
+ for (; i > 0; i--)
+ put_page(pages[i-1]);
+
/*
* Acl update can result in inode attribute update.
* so mark the attribute cache invalid.
@@ -3464,12 +3502,13 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
- nfs4_state_mark_reclaim_nograce(clp, state);
- goto do_state_recovery;
+ nfs4_schedule_stateid_recovery(server, state);
+ goto wait_on_recovery;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_EXPIRED:
- goto do_state_recovery;
+ nfs4_schedule_lease_recovery(clp);
+ goto wait_on_recovery;
#if defined(CONFIG_NFS_V4_1)
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
@@ -3480,7 +3519,7 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR %d, Reset session\n", __func__,
task->tk_status);
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_session_recovery(clp->cl_session);
task->tk_status = 0;
return -EAGAIN;
#endif /* CONFIG_NFS_V4_1 */
@@ -3497,9 +3536,8 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
-do_state_recovery:
+wait_on_recovery:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
- nfs4_schedule_state_recovery(clp);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
task->tk_status = 0;
@@ -4110,7 +4148,7 @@ static void nfs4_lock_release(void *calldata)
task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
data->arg.lock_seqid);
if (!IS_ERR(task))
- rpc_put_task(task);
+ rpc_put_task_async(task);
dprintk("%s: cancelling lock!\n", __func__);
} else
nfs_free_seqid(data->arg.lock_seqid);
@@ -4134,23 +4172,18 @@ static const struct rpc_call_ops nfs4_recover_lock_ops = {
static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
{
- struct nfs_client *clp = server->nfs_client;
- struct nfs4_state *state = lsp->ls_state;
-
switch (error) {
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
- case -NFS4ERR_EXPIRED:
+ lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
if (new_lock_owner != 0 ||
(lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
- nfs4_state_mark_reclaim_nograce(clp, state);
- lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+ nfs4_schedule_stateid_recovery(server, lsp->ls_state);
break;
case -NFS4ERR_STALE_STATEID:
- if (new_lock_owner != 0 ||
- (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
- nfs4_state_mark_reclaim_reboot(clp, state);
lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+ case -NFS4ERR_EXPIRED:
+ nfs4_schedule_lease_recovery(server->nfs_client);
};
}
@@ -4366,12 +4399,14 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
case -NFS4ERR_EXPIRED:
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_STALE_STATEID:
+ nfs4_schedule_lease_recovery(server->nfs_client);
+ goto out;
case -NFS4ERR_BADSESSION:
case -NFS4ERR_BADSLOT:
case -NFS4ERR_BAD_HIGH_SLOT:
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
case -NFS4ERR_DEADSESSION:
- nfs4_schedule_state_recovery(server->nfs_client);
+ nfs4_schedule_session_recovery(server->nfs_client->cl_session);
goto out;
case -ERESTARTSYS:
/*
@@ -4381,7 +4416,7 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OPENMODE:
- nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+ nfs4_schedule_stateid_recovery(server, state);
err = 0;
goto out;
case -EKEYEXPIRED:
@@ -4988,10 +5023,20 @@ int nfs4_proc_create_session(struct nfs_client *clp)
int status;
unsigned *ptr;
struct nfs4_session *session = clp->cl_session;
+ long timeout = 0;
+ int err;
dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
- status = _nfs4_proc_create_session(clp);
+ do {
+ status = _nfs4_proc_create_session(clp);
+ if (status == -NFS4ERR_DELAY) {
+ err = nfs4_delay(clp->cl_rpcclient, &timeout);
+ if (err)
+ status = err;
+ }
+ } while (status == -NFS4ERR_DELAY);
+
if (status)
goto out;
@@ -5100,7 +5145,7 @@ static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client
rpc_delay(task, NFS4_POLL_RETRY_MAX);
return -EAGAIN;
default:
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_lease_recovery(clp);
}
return 0;
}
@@ -5187,7 +5232,7 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cr
if (IS_ERR(task))
ret = PTR_ERR(task);
else
- rpc_put_task(task);
+ rpc_put_task_async(task);
dprintk("<-- %s status=%d\n", __func__, ret);
return ret;
}
@@ -5203,8 +5248,13 @@ static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
goto out;
}
ret = rpc_wait_for_completion_task(task);
- if (!ret)
+ if (!ret) {
+ struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
+
+ if (task->tk_status == 0)
+ nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
ret = task->tk_status;
+ }
rpc_put_task(task);
out:
dprintk("<-- %s status=%d\n", __func__, ret);
@@ -5241,7 +5291,7 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf
rpc_delay(task, NFS4_POLL_RETRY_MAX);
return -EAGAIN;
default:
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_lease_recovery(clp);
}
return 0;
}
@@ -5309,6 +5359,9 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
status = PTR_ERR(task);
goto out;
}
+ status = nfs4_wait_for_completion_rpc_task(task);
+ if (status == 0)
+ status = task->tk_status;
rpc_put_task(task);
return 0;
out:
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index e6742b57a04..0592288f9f0 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1007,9 +1007,9 @@ void nfs4_schedule_state_manager(struct nfs_client *clp)
}
/*
- * Schedule a state recovery attempt
+ * Schedule a lease recovery attempt
*/
-void nfs4_schedule_state_recovery(struct nfs_client *clp)
+void nfs4_schedule_lease_recovery(struct nfs_client *clp)
{
if (!clp)
return;
@@ -1018,7 +1018,7 @@ void nfs4_schedule_state_recovery(struct nfs_client *clp)
nfs4_schedule_state_manager(clp);
}
-int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
+static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
{
set_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@@ -1032,7 +1032,7 @@ int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *st
return 1;
}
-int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
+static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
{
set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags);
clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@@ -1041,6 +1041,14 @@ int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *s
return 1;
}
+void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_state *state)
+{
+ struct nfs_client *clp = server->nfs_client;
+
+ nfs4_state_mark_reclaim_nograce(clp, state);
+ nfs4_schedule_state_manager(clp);
+}
+
static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops)
{
struct inode *inode = state->inode;
@@ -1436,10 +1444,15 @@ static int nfs4_reclaim_lease(struct nfs_client *clp)
}
#ifdef CONFIG_NFS_V4_1
+void nfs4_schedule_session_recovery(struct nfs4_session *session)
+{
+ nfs4_schedule_lease_recovery(session->clp);
+}
+
void nfs41_handle_recall_slot(struct nfs_client *clp)
{
set_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state);
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_state_manager(clp);
}
static void nfs4_reset_all_state(struct nfs_client *clp)
@@ -1447,7 +1460,7 @@ static void nfs4_reset_all_state(struct nfs_client *clp)
if (test_and_set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0) {
clp->cl_boot_time = CURRENT_TIME;
nfs4_state_start_reclaim_nograce(clp);
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_state_manager(clp);
}
}
@@ -1455,7 +1468,7 @@ static void nfs41_handle_server_reboot(struct nfs_client *clp)
{
if (test_and_set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0) {
nfs4_state_start_reclaim_reboot(clp);
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_state_manager(clp);
}
}
@@ -1475,7 +1488,7 @@ static void nfs41_handle_cb_path_down(struct nfs_client *clp)
{
nfs_expire_all_delegations(clp);
if (test_and_set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) == 0)
- nfs4_schedule_state_recovery(clp);
+ nfs4_schedule_state_manager(clp);
}
void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 4e2c168b6ee..94d50e86a12 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1660,7 +1660,7 @@ static void encode_create_session(struct xdr_stream *xdr,
p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
*p++ = cpu_to_be32(OP_CREATE_SESSION);
- p = xdr_encode_hyper(p, clp->cl_ex_clid);
+ p = xdr_encode_hyper(p, clp->cl_clientid);
*p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
*p++ = cpu_to_be32(args->flags); /*flags */
@@ -4694,7 +4694,7 @@ static int decode_exchange_id(struct xdr_stream *xdr,
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
- xdr_decode_hyper(p, &clp->cl_ex_clid);
+ xdr_decode_hyper(p, &clp->cl_clientid);
p = xdr_inline_decode(xdr, 12);
if (unlikely(!p))
goto out_overflow;
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 903908a2002..c541093a5bf 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -86,11 +86,14 @@
/* Default path we try to mount. "%s" gets replaced by our IP address */
#define NFS_ROOT "/tftpboot/%s"
+/* Default NFSROOT mount options. */
+#define NFS_DEF_OPTIONS "udp"
+
/* Parameters passed from the kernel command line */
static char nfs_root_parms[256] __initdata = "";
/* Text-based mount options passed to super.c */
-static char nfs_root_options[256] __initdata = "";
+static char nfs_root_options[256] __initdata = NFS_DEF_OPTIONS;
/* Address of NFS server */
static __be32 servaddr __initdata = htonl(INADDR_NONE);
@@ -160,8 +163,14 @@ static int __init root_nfs_copy(char *dest, const char *src,
}
static int __init root_nfs_cat(char *dest, const char *src,
- const size_t destlen)
+ const size_t destlen)
{
+ size_t len = strlen(dest);
+
+ if (len && dest[len - 1] != ',')
+ if (strlcat(dest, ",", destlen) > destlen)
+ return -1;
+
if (strlcat(dest, src, destlen) > destlen)
return -1;
return 0;
@@ -194,16 +203,6 @@ static int __init root_nfs_parse_options(char *incoming, char *exppath,
if (root_nfs_cat(nfs_root_options, incoming,
sizeof(nfs_root_options)))
return -1;
-
- /*
- * Possibly prepare for more options to be appended
- */
- if (nfs_root_options[0] != '\0' &&
- nfs_root_options[strlen(nfs_root_options)] != ',')
- if (root_nfs_cat(nfs_root_options, ",",
- sizeof(nfs_root_options)))
- return -1;
-
return 0;
}
@@ -217,7 +216,7 @@ static int __init root_nfs_parse_options(char *incoming, char *exppath,
*/
static int __init root_nfs_data(char *cmdline)
{
- char addr_option[sizeof("nolock,addr=") + INET_ADDRSTRLEN + 1];
+ char mand_options[sizeof("nolock,addr=") + INET_ADDRSTRLEN + 1];
int len, retval = -1;
char *tmp = NULL;
const size_t tmplen = sizeof(nfs_export_path);
@@ -244,9 +243,9 @@ static int __init root_nfs_data(char *cmdline)
* Append mandatory options for nfsroot so they override
* what has come before
*/
- snprintf(addr_option, sizeof(addr_option), "nolock,addr=%pI4",
+ snprintf(mand_options, sizeof(mand_options), "nolock,addr=%pI4",
&servaddr);
- if (root_nfs_cat(nfs_root_options, addr_option,
+ if (root_nfs_cat(nfs_root_options, mand_options,
sizeof(nfs_root_options)))
goto out_optionstoolong;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index b68c8607770..d3286583009 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -263,8 +263,11 @@ static match_table_t nfs_local_lock_tokens = {
static void nfs_umount_begin(struct super_block *);
static int nfs_statfs(struct dentry *, struct kstatfs *);
static int nfs_show_options(struct seq_file *, struct vfsmount *);
+static int nfs_show_devname(struct seq_file *, struct vfsmount *);
+static int nfs_show_path(struct seq_file *, struct vfsmount *);
static int nfs_show_stats(struct seq_file *, struct vfsmount *);
-static int nfs_get_sb(struct file_system_type *, int, const char *, void *, struct vfsmount *);
+static struct dentry *nfs_fs_mount(struct file_system_type *,
+ int, const char *, void *);
static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static void nfs_put_super(struct super_block *);
@@ -274,7 +277,7 @@ static int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
static struct file_system_type nfs_fs_type = {
.owner = THIS_MODULE,
.name = "nfs",
- .get_sb = nfs_get_sb,
+ .mount = nfs_fs_mount,
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
@@ -296,6 +299,8 @@ static const struct super_operations nfs_sops = {
.evict_inode = nfs_evict_inode,
.umount_begin = nfs_umount_begin,
.show_options = nfs_show_options,
+ .show_devname = nfs_show_devname,
+ .show_path = nfs_show_path,
.show_stats = nfs_show_stats,
.remount_fs = nfs_remount,
};
@@ -303,16 +308,16 @@ static const struct super_operations nfs_sops = {
#ifdef CONFIG_NFS_V4
static int nfs4_validate_text_mount_data(void *options,
struct nfs_parsed_mount_data *args, const char *dev_name);
-static int nfs4_try_mount(int flags, const char *dev_name,
- struct nfs_parsed_mount_data *data, struct vfsmount *mnt);
-static int nfs4_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static struct dentry *nfs4_try_mount(int flags, const char *dev_name,
+ struct nfs_parsed_mount_data *data);
+static struct dentry *nfs4_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
-static int nfs4_referral_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data);
static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
static void nfs4_kill_super(struct super_block *sb);
@@ -320,7 +325,7 @@ static void nfs4_kill_super(struct super_block *sb);
static struct file_system_type nfs4_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
- .get_sb = nfs4_get_sb,
+ .mount = nfs4_mount,
.kill_sb = nfs4_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
@@ -352,7 +357,7 @@ static struct file_system_type nfs4_remote_referral_fs_type = {
struct file_system_type nfs4_referral_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
- .get_sb = nfs4_referral_get_sb,
+ .mount = nfs4_referral_mount,
.kill_sb = nfs4_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
@@ -366,6 +371,8 @@ static const struct super_operations nfs4_sops = {
.evict_inode = nfs4_evict_inode,
.umount_begin = nfs_umount_begin,
.show_options = nfs_show_options,
+ .show_devname = nfs_show_devname,
+ .show_path = nfs_show_path,
.show_stats = nfs_show_stats,
.remount_fs = nfs_remount,
};
@@ -726,6 +733,28 @@ static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt)
return 0;
}
+static int nfs_show_devname(struct seq_file *m, struct vfsmount *mnt)
+{
+ char *page = (char *) __get_free_page(GFP_KERNEL);
+ char *devname, *dummy;
+ int err = 0;
+ if (!page)
+ return -ENOMEM;
+ devname = nfs_path(&dummy, mnt->mnt_root, page, PAGE_SIZE);
+ if (IS_ERR(devname))
+ err = PTR_ERR(devname);
+ else
+ seq_escape(m, devname, " \t\n\\");
+ free_page((unsigned long)page);
+ return err;
+}
+
+static int nfs_show_path(struct seq_file *m, struct vfsmount *mnt)
+{
+ seq_puts(m, "/");
+ return 0;
+}
+
/*
* Present statistical information for this VFS mountpoint
*/
@@ -2267,19 +2296,19 @@ static int nfs_bdi_register(struct nfs_server *server)
return bdi_register_dev(&server->backing_dev_info, server->s_dev);
}
-static int nfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
+static struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data)
{
struct nfs_server *server = NULL;
struct super_block *s;
struct nfs_parsed_mount_data *data;
struct nfs_fh *mntfh;
- struct dentry *mntroot;
+ struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
};
- int error = -ENOMEM;
+ int error;
data = nfs_alloc_parsed_mount_data(NFS_DEFAULT_VERSION);
mntfh = nfs_alloc_fhandle();
@@ -2290,12 +2319,14 @@ static int nfs_get_sb(struct file_system_type *fs_type,
/* Validate the mount data */
error = nfs_validate_mount_data(raw_data, data, mntfh, dev_name);
- if (error < 0)
+ if (error < 0) {
+ mntroot = ERR_PTR(error);
goto out;
+ }
#ifdef CONFIG_NFS_V4
if (data->version == 4) {
- error = nfs4_try_mount(flags, dev_name, data, mnt);
+ mntroot = nfs4_try_mount(flags, dev_name, data);
kfree(data->client_address);
kfree(data->nfs_server.export_path);
goto out;
@@ -2305,7 +2336,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
/* Get a volume representation */
server = nfs_create_server(data, mntfh);
if (IS_ERR(server)) {
- error = PTR_ERR(server);
+ mntroot = ERR_CAST(server);
goto out;
}
sb_mntdata.server = server;
@@ -2316,7 +2347,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
/* Get a superblock - note that we may end up sharing one that already exists */
s = sget(fs_type, compare_super, nfs_set_super, &sb_mntdata);
if (IS_ERR(s)) {
- error = PTR_ERR(s);
+ mntroot = ERR_CAST(s);
goto out_err_nosb;
}
@@ -2325,8 +2356,10 @@ static int nfs_get_sb(struct file_system_type *fs_type,
server = NULL;
} else {
error = nfs_bdi_register(server);
- if (error)
+ if (error) {
+ mntroot = ERR_PTR(error);
goto error_splat_bdi;
+ }
}
if (!s->s_root) {
@@ -2336,20 +2369,15 @@ static int nfs_get_sb(struct file_system_type *fs_type,
s, data ? data->fscache_uniq : NULL, NULL);
}
- mntroot = nfs_get_root(s, mntfh);
- if (IS_ERR(mntroot)) {
- error = PTR_ERR(mntroot);
+ mntroot = nfs_get_root(s, mntfh, dev_name);
+ if (IS_ERR(mntroot))
goto error_splat_super;
- }
error = security_sb_set_mnt_opts(s, &data->lsm_opts);
if (error)
goto error_splat_root;
s->s_flags |= MS_ACTIVE;
- mnt->mnt_sb = s;
- mnt->mnt_root = mntroot;
- error = 0;
out:
kfree(data->nfs_server.hostname);
@@ -2359,7 +2387,7 @@ out:
out_free_fh:
nfs_free_fhandle(mntfh);
kfree(data);
- return error;
+ return mntroot;
out_err_nosb:
nfs_free_server(server);
@@ -2367,6 +2395,7 @@ out_err_nosb:
error_splat_root:
dput(mntroot);
+ mntroot = ERR_PTR(error);
error_splat_super:
if (server && !s->s_root)
bdi_unregister(&server->backing_dev_info);
@@ -2450,7 +2479,7 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
nfs_fscache_get_super_cookie(s, NULL, data);
}
- mntroot = nfs_get_root(s, data->fh);
+ mntroot = nfs_get_root(s, data->fh, dev_name);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -2718,7 +2747,7 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags,
s, data ? data->fscache_uniq : NULL, NULL);
}
- mntroot = nfs4_get_root(s, mntfh);
+ mntroot = nfs4_get_root(s, mntfh, dev_name);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -2771,27 +2800,6 @@ static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
return root_mnt;
}
-static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
-{
- char *page = (char *) __get_free_page(GFP_KERNEL);
- char *devname, *tmp;
-
- if (page == NULL)
- return;
- devname = nfs_path(path->mnt->mnt_devname,
- path->mnt->mnt_root, path->dentry,
- page, PAGE_SIZE);
- if (IS_ERR(devname))
- goto out_freepage;
- tmp = kstrdup(devname, GFP_KERNEL);
- if (tmp == NULL)
- goto out_freepage;
- kfree(mnt->mnt_devname);
- mnt->mnt_devname = tmp;
-out_freepage:
- free_page((unsigned long)page);
-}
-
struct nfs_referral_count {
struct list_head list;
const struct task_struct *task;
@@ -2858,17 +2866,18 @@ static void nfs_referral_loop_unprotect(void)
kfree(p);
}
-static int nfs_follow_remote_path(struct vfsmount *root_mnt,
- const char *export_path, struct vfsmount *mnt_target)
+static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt,
+ const char *export_path)
{
struct nameidata *nd = NULL;
struct mnt_namespace *ns_private;
struct super_block *s;
+ struct dentry *dentry;
int ret;
nd = kmalloc(sizeof(*nd), GFP_KERNEL);
if (nd == NULL)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
ns_private = create_mnt_ns(root_mnt);
ret = PTR_ERR(ns_private);
@@ -2890,32 +2899,27 @@ static int nfs_follow_remote_path(struct vfsmount *root_mnt,
s = nd->path.mnt->mnt_sb;
atomic_inc(&s->s_active);
- mnt_target->mnt_sb = s;
- mnt_target->mnt_root = dget(nd->path.dentry);
-
- /* Correct the device pathname */
- nfs_fix_devname(&nd->path, mnt_target);
+ dentry = dget(nd->path.dentry);
path_put(&nd->path);
kfree(nd);
down_write(&s->s_umount);
- return 0;
+ return dentry;
out_put_mnt_ns:
put_mnt_ns(ns_private);
out_mntput:
mntput(root_mnt);
out_err:
kfree(nd);
- return ret;
+ return ERR_PTR(ret);
}
-static int nfs4_try_mount(int flags, const char *dev_name,
- struct nfs_parsed_mount_data *data,
- struct vfsmount *mnt)
+static struct dentry *nfs4_try_mount(int flags, const char *dev_name,
+ struct nfs_parsed_mount_data *data)
{
char *export_path;
struct vfsmount *root_mnt;
- int error;
+ struct dentry *res;
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
@@ -2925,26 +2929,25 @@ static int nfs4_try_mount(int flags, const char *dev_name,
data->nfs_server.hostname);
data->nfs_server.export_path = export_path;
- error = PTR_ERR(root_mnt);
- if (IS_ERR(root_mnt))
- goto out;
+ res = ERR_CAST(root_mnt);
+ if (!IS_ERR(root_mnt))
+ res = nfs_follow_remote_path(root_mnt, export_path);
- error = nfs_follow_remote_path(root_mnt, export_path, mnt);
-
-out:
- dfprintk(MOUNT, "<-- nfs4_try_mount() = %d%s\n", error,
- error != 0 ? " [error]" : "");
- return error;
+ dfprintk(MOUNT, "<-- nfs4_try_mount() = %ld%s\n",
+ IS_ERR(res) ? PTR_ERR(res) : 0,
+ IS_ERR(res) ? " [error]" : "");
+ return res;
}
/*
* Get the superblock for an NFS4 mountpoint
*/
-static int nfs4_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
+static struct dentry *nfs4_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data)
{
struct nfs_parsed_mount_data *data;
int error = -ENOMEM;
+ struct dentry *res = ERR_PTR(-ENOMEM);
data = nfs_alloc_parsed_mount_data(4);
if (data == NULL)
@@ -2952,10 +2955,14 @@ static int nfs4_get_sb(struct file_system_type *fs_type,
/* Validate the mount data */
error = nfs4_validate_mount_data(raw_data, data, dev_name);
- if (error < 0)
+ if (error < 0) {
+ res = ERR_PTR(error);
goto out;
+ }
- error = nfs4_try_mount(flags, dev_name, data, mnt);
+ res = nfs4_try_mount(flags, dev_name, data);
+ if (IS_ERR(res))
+ error = PTR_ERR(res);
out:
kfree(data->client_address);
@@ -2964,9 +2971,9 @@ out:
kfree(data->fscache_uniq);
out_free_data:
kfree(data);
- dprintk("<-- nfs4_get_sb() = %d%s\n", error,
+ dprintk("<-- nfs4_mount() = %d%s\n", error,
error != 0 ? " [error]" : "");
- return error;
+ return res;
}
static void nfs4_kill_super(struct super_block *sb)
@@ -3033,7 +3040,7 @@ nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
nfs_fscache_get_super_cookie(s, NULL, data);
}
- mntroot = nfs4_get_root(s, data->fh);
+ mntroot = nfs4_get_root(s, data->fh, dev_name);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -3120,7 +3127,7 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
nfs_fscache_get_super_cookie(s, NULL, data);
}
- mntroot = nfs4_get_root(s, mntfh);
+ mntroot = nfs4_get_root(s, mntfh, dev_name);
if (IS_ERR(mntroot)) {
error = PTR_ERR(mntroot);
goto error_splat_super;
@@ -3160,16 +3167,15 @@ error_splat_bdi:
/*
* Create an NFS4 server record on referral traversal
*/
-static int nfs4_referral_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data,
- struct vfsmount *mnt)
+static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data)
{
struct nfs_clone_mount *data = raw_data;
char *export_path;
struct vfsmount *root_mnt;
- int error;
+ struct dentry *res;
- dprintk("--> nfs4_referral_get_sb()\n");
+ dprintk("--> nfs4_referral_mount()\n");
export_path = data->mnt_path;
data->mnt_path = "/";
@@ -3178,15 +3184,13 @@ static int nfs4_referral_get_sb(struct file_system_type *fs_type,
flags, data, data->hostname);
data->mnt_path = export_path;
- error = PTR_ERR(root_mnt);
- if (IS_ERR(root_mnt))
- goto out;
-
- error = nfs_follow_remote_path(root_mnt, export_path, mnt);
-out:
- dprintk("<-- nfs4_referral_get_sb() = %d%s\n", error,
- error != 0 ? " [error]" : "");
- return error;
+ res = ERR_CAST(root_mnt);
+ if (!IS_ERR(root_mnt))
+ res = nfs_follow_remote_path(root_mnt, export_path);
+ dprintk("<-- nfs4_referral_mount() = %ld%s\n",
+ IS_ERR(res) ? PTR_ERR(res) : 0,
+ IS_ERR(res) ? " [error]" : "");
+ return res;
}
#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index e313a51acdd..8d6864c2a5f 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -148,6 +148,7 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
alias = d_lookup(parent, &data->args.name);
if (alias != NULL) {
int ret = 0;
+ void *devname_garbage = NULL;
/*
* Hey, we raced with lookup... See if we need to transfer
@@ -157,6 +158,7 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
spin_lock(&alias->d_lock);
if (alias->d_inode != NULL &&
!(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
+ devname_garbage = alias->d_fsdata;
alias->d_fsdata = data;
alias->d_flags |= DCACHE_NFSFS_RENAMED;
ret = 1;
@@ -164,6 +166,13 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
spin_unlock(&alias->d_lock);
nfs_dec_sillycount(dir);
dput(alias);
+ /*
+ * If we'd displaced old cached devname, free it. At that
+ * point dentry is definitely not a root, so we won't need
+ * that anymore.
+ */
+ if (devname_garbage)
+ kfree(devname_garbage);
return ret;
}
data->dir = igrab(dir);
@@ -180,7 +189,7 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
task_setup_data.rpc_client = NFS_CLIENT(dir);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
- rpc_put_task(task);
+ rpc_put_task_async(task);
return 1;
}
@@ -252,6 +261,7 @@ nfs_async_unlink(struct inode *dir, struct dentry *dentry)
{
struct nfs_unlinkdata *data;
int status = -ENOMEM;
+ void *devname_garbage = NULL;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
@@ -269,8 +279,16 @@ nfs_async_unlink(struct inode *dir, struct dentry *dentry)
if (dentry->d_flags & DCACHE_NFSFS_RENAMED)
goto out_unlock;
dentry->d_flags |= DCACHE_NFSFS_RENAMED;
+ devname_garbage = dentry->d_fsdata;
dentry->d_fsdata = data;
spin_unlock(&dentry->d_lock);
+ /*
+ * If we'd displaced old cached devname, free it. At that
+ * point dentry is definitely not a root, so we won't need
+ * that anymore.
+ */
+ if (devname_garbage)
+ kfree(devname_garbage);
return 0;
out_unlock:
spin_unlock(&dentry->d_lock);
@@ -299,6 +317,7 @@ nfs_complete_unlink(struct dentry *dentry, struct inode *inode)
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
dentry->d_flags &= ~DCACHE_NFSFS_RENAMED;
data = dentry->d_fsdata;
+ dentry->d_fsdata = NULL;
}
spin_unlock(&dentry->d_lock);
@@ -315,6 +334,7 @@ nfs_cancel_async_unlink(struct dentry *dentry)
struct nfs_unlinkdata *data = dentry->d_fsdata;
dentry->d_flags &= ~DCACHE_NFSFS_RENAMED;
+ dentry->d_fsdata = NULL;
spin_unlock(&dentry->d_lock);
nfs_free_unlinkdata(data);
return;
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index c8278f4046c..42b92d7a9cc 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1292,6 +1292,8 @@ static int nfs_commit_rpcsetup(struct list_head *head,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
+ if (how & FLUSH_SYNC)
+ rpc_wait_for_completion_task(task);
rpc_put_task(task);
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-31 09:30:06 +0000