Commit 4f6bb246 authored by Stanislav Kinsbursky's avatar Stanislav Kinsbursky Committed by Trond Myklebust
Browse files

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: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarTrond 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;

}