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| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | 2013-06-24 11:52:59 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-06-28 23:42:26 +0400 |
| commit | 4f6bb246f69443549fbbd0f2abaf863243cb35e9 (patch) | |
| tree | 6a4608ffba8d5489d0b9dbc35840d33917840199 /net/sunrpc/clnt.c | |
| parent | e73f4cc051199799aee4320f300f28ffb82f3eb1 (diff) | |
| download | linux-4f6bb246f69443549fbbd0f2abaf863243cb35e9.tar.xz | |
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>
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index b4f17117b779..f0339ae9bf37 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -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; } |