tree 5aa23c37416e71ef28c593bcf83bdaca9fdd0b7a
parent 8e472f33b5ba742f9bfcf16f0328f5a7842b32d1
author Trond Myklebust <Trond.Myklebust@netapp.com> 1366581666 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1366582122 -0400

LOCKD: Ensure that nlmclnt_block resets block->b_status after a server reboot

After a server reboot, the reclaimer thread will recover all the existing
locks. For locks that are blocked, however, it will change the value
of block->b_status to nlm_lck_denied_grace_period in order to signal that
they need to wake up and resend the original blocking lock request.

Due to a bug, however, the block->b_status never gets reset after the
blocked locks have been woken up, and so the process goes into an
infinite loop of resends until the blocked lock is satisfied.

Reported-by: Marc Eshel <eshel@us.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org