Messages in this thread Patch in this message | | | Subject | [PATCH 3/3] SUNRPC: PipeFS MOUNT notification optimization for dying clients | From | Stanislav Kinsbursky <> | Date | Mon, 10 Jun 2013 18:40:15 +0400 |
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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 --- 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 3c133f2..fc4f4d1 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -185,6 +185,8 @@ 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; }
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