From: David Teigland <teigland@redhat.com>
Date: Tue, 8 Jan 2008 21:37:47 +0000 (-0600)
Subject: dlm: another call to confirm_master in receive_request_reply
X-Git-Tag: v2.6.25-rc1~1139^2~10
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aec64e1be2225c6fc64499594d23257c6adf6168;p=linux-2.6

dlm: another call to confirm_master in receive_request_reply

When a failed request (EBADR or ENOTBLK) is unlocked/canceled instead of
retried, there may be other lkb's waiting on the rsb_lookup list for it
to complete.  A call to confirm_master() is needed to move on to the next
waiting lkb since the current one won't be retried.

Signed-off-by: David Teigland <teigland@redhat.com>
---

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index a758f1b80e..d5e8ea1b4f 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1940,8 +1940,11 @@ static void confirm_master(struct dlm_rsb *r, int error)
 		break;
 
 	case -EAGAIN:
-		/* the remote master didn't queue our NOQUEUE request;
-		   make a waiting lkb the first_lkid */
+	case -EBADR:
+	case -ENOTBLK:
+		/* the remote request failed and won't be retried (it was
+		   a NOQUEUE, or has been canceled/unlocked); make a waiting
+		   lkb the first_lkid */
 
 		r->res_first_lkid = 0;
 
@@ -3382,6 +3385,7 @@ static void receive_request_reply(struct dlm_ls *ls, struct dlm_message *ms)
 		if (is_overlap(lkb)) {
 			/* we'll ignore error in cancel/unlock reply */
 			queue_cast_overlap(r, lkb);
+			confirm_master(r, result);
 			unhold_lkb(lkb); /* undoes create_lkb() */
 		} else
 			_request_lock(r, lkb);