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| author | Jeff Layton <jlayton@redhat.com> | 2012-06-11 10:03:42 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-11 17:27:07 -0400 |
| commit | 92123e068efa310b09e9943ac1cfd10ff6b6d2e4 (patch) | |
| tree | 44585ac8bad427707d268e682298a0cb74e7f6d9 /net/sunrpc/rpc_pipe.c | |
| parent | 2669940db8d02147181e338bb6db98394569f31a (diff) | |
| download | linux-92123e068efa310b09e9943ac1cfd10ff6b6d2e4.tar.gz | |
rpc_pipefs: allow rpc_purge_list to take a NULL waitq pointer
In the event that we don't have a dentry for a rpc_pipefs pipe, we still need to allow the queue_timeout job to clean out the queue. There's just no waitq to wake up in that event. Cc: stable@kernel.org Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> Reported-by: Joerg Platte <jplatte@naasa.net> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/rpc_pipe.c')
| -rw-r--r-- | net/sunrpc/rpc_pipe.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 04040476082e..21fde99e5c56 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -71,7 +71,9 @@ static void rpc_purge_list(wait_queue_head_t *waitq, struct list_head *head, msg->errno = err; destroy_msg(msg); } while (!list_empty(head)); - wake_up(waitq); + + if (waitq) + wake_up(waitq); } static void @@ -91,11 +93,9 @@ rpc_timeout_upcall_queue(struct work_struct *work) } dentry = dget(pipe->dentry); spin_unlock(&pipe->lock); - if (dentry) { - rpc_purge_list(&RPC_I(dentry->d_inode)->waitq, - &free_list, destroy_msg, -ETIMEDOUT); - dput(dentry); - } + rpc_purge_list(dentry ? &RPC_I(dentry->d_inode)->waitq : NULL, + &free_list, destroy_msg, -ETIMEDOUT); + dput(dentry); } ssize_t rpc_pipe_generic_upcall(struct file *filp, struct rpc_pipe_msg *msg, |