From: Alasdair G Kergon <agk@redhat.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, jblunck@suse.de
Subject: [PATCH] device-mapper snapshot: bio_list fix
Date: Fri, 18 Nov 2005 14:55:47 +0000 [thread overview]
Message-ID: <20051118145547.GK11878@agk.surrey.redhat.com> (raw)
bio_list_merge() should do nothing if the second list is empty - not oops.
From: jblunck@suse.de
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
Index: linux-2.6.14/drivers/md/dm-bio-list.h
===================================================================
--- linux-2.6.14.orig/drivers/md/dm-bio-list.h 2005-10-28 01:02:08.000000000 +0100
+++ linux-2.6.14/drivers/md/dm-bio-list.h 2005-11-15 15:59:20.000000000 +0000
@@ -33,6 +33,9 @@ static inline void bio_list_add(struct b
static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
{
+ if (!bl2->head)
+ return;
+
if (bl->tail)
bl->tail->bi_next = bl2->head;
else
next reply other threads:[~2005-11-18 14:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-18 14:55 Alasdair G Kergon [this message]
2005-11-18 15:32 ` Alexander E. Patrakov
2005-11-18 15:39 ` Alasdair G Kergon
2005-11-18 16:56 ` jblunck
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