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-rw-r--r--include/linux/sunrpc/sched.h3
-rw-r--r--net/sunrpc/clnt.c32
-rw-r--r--net/sunrpc/pmap_clnt.c8
-rw-r--r--net/sunrpc/sched.c31
4 files changed, 34 insertions, 40 deletions
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 4d77e90d0b30..4c4b2dc8aca5 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -233,6 +233,7 @@ struct rpc_task *rpc_new_child(struct rpc_clnt *, struct rpc_task *parent);
void rpc_init_task(struct rpc_task *, struct rpc_clnt *,
rpc_action exitfunc, int flags);
void rpc_release_task(struct rpc_task *);
+void rpc_exit_task(struct rpc_task *);
void rpc_killall_tasks(struct rpc_clnt *);
int rpc_execute(struct rpc_task *);
void rpc_run_child(struct rpc_task *parent, struct rpc_task *child,
@@ -259,7 +260,7 @@ void rpc_destroy_mempool(void);
static inline void rpc_exit(struct rpc_task *task, int status)
{
task->tk_status = status;
- task->tk_action = NULL;
+ task->tk_action = rpc_exit_task;
}
#ifdef RPC_DEBUG
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 61c3abeaccae..6ab4cbd8a901 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -511,7 +511,7 @@ rpc_call_setup(struct rpc_task *task, struct rpc_message *msg, int flags)
if (task->tk_status == 0)
task->tk_action = call_start;
else
- task->tk_action = NULL;
+ task->tk_action = rpc_exit_task;
}
void
@@ -892,7 +892,7 @@ call_transmit(struct rpc_task *task)
if (task->tk_status < 0)
return;
if (!task->tk_msg.rpc_proc->p_decode) {
- task->tk_action = NULL;
+ task->tk_action = rpc_exit_task;
rpc_wake_up_task(task);
}
return;
@@ -1039,13 +1039,14 @@ call_decode(struct rpc_task *task)
sizeof(req->rq_rcv_buf)) != 0);
/* Verify the RPC header */
- if (!(p = call_verify(task))) {
- if (task->tk_action == NULL)
- return;
- goto out_retry;
+ p = call_verify(task);
+ if (IS_ERR(p)) {
+ if (p == ERR_PTR(-EAGAIN))
+ goto out_retry;
+ return;
}
- task->tk_action = NULL;
+ task->tk_action = rpc_exit_task;
if (decode)
task->tk_status = rpcauth_unwrap_resp(task, decode, req, p,
@@ -1138,7 +1139,7 @@ call_verify(struct rpc_task *task)
if ((n = ntohl(*p++)) != RPC_REPLY) {
printk(KERN_WARNING "call_verify: not an RPC reply: %x\n", n);
- goto out_retry;
+ goto out_garbage;
}
if ((n = ntohl(*p++)) != RPC_MSG_ACCEPTED) {
if (--len < 0)
@@ -1168,7 +1169,7 @@ call_verify(struct rpc_task *task)
task->tk_pid);
rpcauth_invalcred(task);
task->tk_action = call_refresh;
- return NULL;
+ goto out_retry;
case RPC_AUTH_BADCRED:
case RPC_AUTH_BADVERF:
/* possibly garbled cred/verf? */
@@ -1178,7 +1179,7 @@ call_verify(struct rpc_task *task)
dprintk("RPC: %4d call_verify: retry garbled creds\n",
task->tk_pid);
task->tk_action = call_bind;
- return NULL;
+ goto out_retry;
case RPC_AUTH_TOOWEAK:
printk(KERN_NOTICE "call_verify: server requires stronger "
"authentication.\n");
@@ -1193,7 +1194,7 @@ call_verify(struct rpc_task *task)
}
if (!(p = rpcauth_checkverf(task, p))) {
printk(KERN_WARNING "call_verify: auth check failed\n");
- goto out_retry; /* bad verifier, retry */
+ goto out_garbage; /* bad verifier, retry */
}
len = p - (u32 *)iov->iov_base - 1;
if (len < 0)
@@ -1230,23 +1231,24 @@ call_verify(struct rpc_task *task)
/* Also retry */
}
-out_retry:
+out_garbage:
task->tk_client->cl_stats->rpcgarbage++;
if (task->tk_garb_retry) {
task->tk_garb_retry--;
dprintk("RPC %s: retrying %4d\n", __FUNCTION__, task->tk_pid);
task->tk_action = call_bind;
- return NULL;
+out_retry:
+ return ERR_PTR(-EAGAIN);
}
printk(KERN_WARNING "RPC %s: retry failed, exit EIO\n", __FUNCTION__);
out_eio:
error = -EIO;
out_err:
rpc_exit(task, error);
- return NULL;
+ return ERR_PTR(error);
out_overflow:
printk(KERN_WARNING "RPC %s: server reply was truncated.\n", __FUNCTION__);
- goto out_retry;
+ goto out_garbage;
}
static int rpcproc_encode_null(void *rqstp, u32 *data, void *obj)
diff --git a/net/sunrpc/pmap_clnt.c b/net/sunrpc/pmap_clnt.c
index a398575f94b8..cad4568fbbe2 100644
--- a/net/sunrpc/pmap_clnt.c
+++ b/net/sunrpc/pmap_clnt.c
@@ -90,8 +90,7 @@ bailout:
map->pm_binding = 0;
rpc_wake_up(&map->pm_bindwait);
spin_unlock(&pmap_lock);
- task->tk_status = -EIO;
- task->tk_action = NULL;
+ rpc_exit(task, -EIO);
}
#ifdef CONFIG_ROOT_NFS
@@ -138,11 +137,10 @@ pmap_getport_done(struct rpc_task *task)
task->tk_pid, task->tk_status, clnt->cl_port);
if (task->tk_status < 0) {
/* Make the calling task exit with an error */
- task->tk_action = NULL;
+ task->tk_action = rpc_exit_task;
} else if (clnt->cl_port == 0) {
/* Program not registered */
- task->tk_status = -EACCES;
- task->tk_action = NULL;
+ rpc_exit(task, -EACCES);
} else {
/* byte-swap port number first */
clnt->cl_port = htons(clnt->cl_port);
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 54e60a657500..3fcf7b0e1f6c 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -555,28 +555,22 @@ __rpc_atrun(struct rpc_task *task)
}
/*
- * Helper that calls task->tk_exit if it exists and then returns
- * true if we should exit __rpc_execute.
+ * Helper that calls task->tk_exit if it exists
*/
-static inline int __rpc_do_exit(struct rpc_task *task)
+void rpc_exit_task(struct rpc_task *task)
{
+ task->tk_action = NULL;
if (task->tk_exit != NULL) {
- lock_kernel();
task->tk_exit(task);
- unlock_kernel();
- /* If tk_action is non-null, we should restart the call */
if (task->tk_action != NULL) {
- if (!RPC_ASSASSINATED(task)) {
- /* Release RPC slot and buffer memory */
- xprt_release(task);
- rpc_free(task);
- return 0;
- }
- printk(KERN_ERR "RPC: dead task tried to walk away.\n");
+ WARN_ON(RPC_ASSASSINATED(task));
+ /* Always release the RPC slot and buffer memory */
+ xprt_release(task);
+ rpc_free(task);
}
}
- return 1;
}
+EXPORT_SYMBOL(rpc_exit_task);
static int rpc_wait_bit_interruptible(void *word)
{
@@ -631,12 +625,11 @@ static int __rpc_execute(struct rpc_task *task)
* by someone else.
*/
if (!RPC_IS_QUEUED(task)) {
- if (task->tk_action != NULL) {
- lock_kernel();
- task->tk_action(task);
- unlock_kernel();
- } else if (__rpc_do_exit(task))
+ if (task->tk_action == NULL)
break;
+ lock_kernel();
+ task->tk_action(task);
+ unlock_kernel();
}
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 03:26:54 +0000