From 666b3d803a511fbc9bc5e5ea8ce66010cf03ea13 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 19 Feb 2013 12:04:42 -0500 Subject: [PATCH] NLM: Ensure that we resend all pending blocking locks after a reclaim Currently, nlmclnt_lock will break out of the for(;;) loop when the reclaimer wakes up the blocking lock thread by setting nlm_lck_denied_grace_period. This causes the lock request to fail with an ENOLCK error. The intention was always to ensure that we resend the lock request after the grace period has expired. Reported-by: Wangyuan Zhang Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/lockd/clntproc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 54f9e6c..52e5120 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -550,6 +550,9 @@ again: status = nlmclnt_block(block, req, NLMCLNT_POLL_TIMEOUT); if (status < 0) break; + /* Resend the blocking lock request after a server reboot */ + if (resp->status == nlm_lck_denied_grace_period) + continue; if (resp->status != nlm_lck_blocked) break; } -- 2.7.4