Commit 4f6bb246 authored Jun 24, 2013 by Stanislav Kinsbursky Committed by Trond Myklebust Jun 28, 2013

SUNRPC: PipeFS MOUNT notification optimization for dying clients



Not need to create pipes for dying client. So just skip them.

Note: we can safely dereference the client structure, because notification
caller is holding sn->pipefs_sb_lock.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

parent e73f4cc0

net/sunrpc/clnt.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -177,6 +177,8 @@ static inline int rpc_clnt_skip_event(struct rpc_clnt *clnt, unsigned long event
		if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) \|\|
		((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))
		return 1;
		if ((event == RPC_PIPEFS_MOUNT) && atomic_read(&clnt->cl_count) == 0)
		return 1;
		return 0;
		}