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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-02-19 12:04:42 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-02-28 06:59:02 -0800
commit92a5267ac37e74cf44675f5992fc6fa4ad694a04 (patch)
treeb0ddd2e1406971f6b13f7d667d5066aa0b95a953 /fs
parent8e0ed8259d2016543b07a43896bc6f4b7f541e42 (diff)
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NLM: Ensure that we resend all pending blocking locks after a reclaim
commit 666b3d803a511fbc9bc5e5ea8ce66010cf03ea13 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/lockd/clntproc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 8392cb85bd5..a3a09877ea6 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -551,6 +551,9 @@ 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;
}