| From | Luis Henriques <> | Subject | [PATCH 80/98] SUNRPC: PipeFS MOUNT notification optimization for dying clients | Date | Thu, 11 Jul 2013 15:24:50 +0100 |
| |
3.5.7.17 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Stanislav Kinsbursky <skinsbursky@parallels.com>
commit 4f6bb246f69443549fbbd0f2abaf863243cb35e9 upstream.
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> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- net/sunrpc/clnt.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 631a75d..e0fd6a7 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -179,6 +179,8 @@ 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; } -- 1.8.1.2
|