diff options
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 56 |
1 files changed, 45 insertions, 11 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index d2f0550c4ba..aa8965e9d30 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -28,12 +28,11 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/utsname.h> +#include <linux/workqueue.h> #include <linux/sunrpc/clnt.h> -#include <linux/workqueue.h> #include <linux/sunrpc/rpc_pipe_fs.h> - -#include <linux/nfs.h> +#include <linux/sunrpc/metrics.h> #define RPC_SLACK_SPACE (1024) /* total overkill */ @@ -71,8 +70,15 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name) static uint32_t clntid; int error; + clnt->cl_vfsmnt = ERR_PTR(-ENOENT); + clnt->cl_dentry = ERR_PTR(-ENOENT); if (dir_name == NULL) return 0; + + clnt->cl_vfsmnt = rpc_get_mount(); + if (IS_ERR(clnt->cl_vfsmnt)) + return PTR_ERR(clnt->cl_vfsmnt); + for (;;) { snprintf(clnt->cl_pathname, sizeof(clnt->cl_pathname), "%s/clnt%x", dir_name, @@ -85,6 +91,7 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name) if (error != -EEXIST) { printk(KERN_INFO "RPC: Couldn't create pipefs entry %s, error %d\n", clnt->cl_pathname, error); + rpc_put_mount(); return error; } } @@ -113,7 +120,7 @@ rpc_new_client(struct rpc_xprt *xprt, char *servname, err = -EINVAL; if (!xprt) - goto out_err; + goto out_no_xprt; if (vers >= program->nrvers || !(version = program->version[vers])) goto out_err; @@ -147,6 +154,7 @@ rpc_new_client(struct rpc_xprt *xprt, char *servname, clnt->cl_vers = version->number; clnt->cl_prot = xprt->prot; clnt->cl_stats = program->stats; + clnt->cl_metrics = rpc_alloc_iostats(clnt); rpc_init_wait_queue(&clnt->cl_pmap_default.pm_bindwait, "bindwait"); if (!clnt->cl_port) @@ -175,13 +183,18 @@ rpc_new_client(struct rpc_xprt *xprt, char *servname, return clnt; out_no_auth: - rpc_rmdir(clnt->cl_pathname); + if (!IS_ERR(clnt->cl_dentry)) { + rpc_rmdir(clnt->cl_pathname); + dput(clnt->cl_dentry); + rpc_put_mount(); + } out_no_path: if (clnt->cl_server != clnt->cl_inline_name) kfree(clnt->cl_server); kfree(clnt); out_err: xprt_destroy(xprt); +out_no_xprt: return ERR_PTR(err); } @@ -239,11 +252,15 @@ rpc_clone_client(struct rpc_clnt *clnt) new->cl_autobind = 0; new->cl_oneshot = 0; new->cl_dead = 0; + if (!IS_ERR(new->cl_dentry)) { + dget(new->cl_dentry); + rpc_get_mount(); + } rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval); if (new->cl_auth) atomic_inc(&new->cl_auth->au_count); new->cl_pmap = &new->cl_pmap_default; - rpc_init_wait_queue(&new->cl_pmap_default.pm_bindwait, "bindwait"); + new->cl_metrics = rpc_alloc_iostats(clnt); return new; out_no_clnt: printk(KERN_INFO "RPC: out of memory in %s\n", __FUNCTION__); @@ -313,6 +330,12 @@ rpc_destroy_client(struct rpc_clnt *clnt) if (clnt->cl_server != clnt->cl_inline_name) kfree(clnt->cl_server); out_free: + rpc_free_iostats(clnt->cl_metrics); + clnt->cl_metrics = NULL; + if (!IS_ERR(clnt->cl_dentry)) { + dput(clnt->cl_dentry); + rpc_put_mount(); + } kfree(clnt); return 0; } @@ -472,15 +495,16 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags, int status; /* If this client is slain all further I/O fails */ + status = -EIO; if (clnt->cl_dead) - return -EIO; + goto out_release; flags |= RPC_TASK_ASYNC; /* Create/initialize a new RPC task */ status = -ENOMEM; if (!(task = rpc_new_task(clnt, flags, tk_ops, data))) - goto out; + goto out_release; /* Mask signals on GSS_AUTH upcalls */ rpc_task_sigmask(task, &oldset); @@ -495,7 +519,10 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags, rpc_release_task(task); rpc_restore_sigmask(&oldset); -out: + return status; +out_release: + if (tk_ops->rpc_release != NULL) + tk_ops->rpc_release(data); return status; } @@ -992,6 +1019,8 @@ call_timeout(struct rpc_task *task) } dprintk("RPC: %4d call_timeout (major)\n", task->tk_pid); + task->tk_timeouts++; + if (RPC_IS_SOFT(task)) { printk(KERN_NOTICE "%s: server %s not responding, timed out\n", clnt->cl_protname, clnt->cl_server); @@ -1044,6 +1073,11 @@ call_decode(struct rpc_task *task) return; } + /* + * Ensure that we see all writes made by xprt_complete_rqst() + * before it changed req->rq_received. + */ + smp_rmb(); req->rq_rcv_buf.len = req->rq_private_buf.len; /* Check that the softirq receive buffer is valid */ @@ -1193,8 +1227,8 @@ call_verify(struct rpc_task *task) task->tk_action = call_bind; goto out_retry; case RPC_AUTH_TOOWEAK: - printk(KERN_NOTICE "call_verify: server requires stronger " - "authentication.\n"); + printk(KERN_NOTICE "call_verify: server %s requires stronger " + "authentication.\n", task->tk_client->cl_server); break; default: printk(KERN_WARNING "call_verify: unknown auth error: %x\n", n); |