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NLM: Ensure that we resend all pending blocking locks after a reclaim

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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 <Wangyuan.Zhang@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Trond Myklebust 2013-02-19 12:04:42 -05:00
parent 5a12cca697
commit 666b3d803a
1 changed files with 3 additions and 0 deletions
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3
fs/lockd/clntproc.c
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@ -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;
}