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authorDavid Woodhouse <dwmw2@infradead.org>2006-08-31 02:30:38 +0400
committerDavid Woodhouse <dwmw2@infradead.org>2006-08-31 02:30:38 +0400
commit0a7d5f8ce960e74fa22986bda4af488539796e49 (patch)
treee29ad17808a5c3410518e22dae8dfe94801b59f3 /block/elevator.c
parent0165508c80a2b5d5268d9c5dfa9b30c534a33693 (diff)
parentdc709bd190c130b299ac19d596594256265c042a (diff)
downloadlinux-0a7d5f8ce960e74fa22986bda4af488539796e49.tar.xz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'block/elevator.c')
-rw-r--r--block/elevator.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/elevator.c b/block/elevator.c
index bc7baeec0d10..9b72dc7c8a5c 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -765,7 +765,8 @@ void elv_unregister(struct elevator_type *e)
read_lock(&tasklist_lock);
do_each_thread(g, p) {
task_lock(p);
- e->ops.trim(p->io_context);
+ if (p->io_context)
+ e->ops.trim(p->io_context);
task_unlock(p);
} while_each_thread(g, p);
read_unlock(&tasklist_lock);