From 7e5c1e830b2310359a4cfbbf89895dde4abd996a Mon Sep 17 00:00:00 2001 From: Milan Broz Date: Fri, 8 Feb 2008 02:09:49 +0000 Subject: [PATCH] dm: add missing memory barrier to dm_suspend Add memory barrier to fix atomic_read of pending value. Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon --- drivers/md/dm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f2d24eb3208..466a6bf0742 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1410,6 +1410,7 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags) while (1) { set_current_state(TASK_INTERRUPTIBLE); + smp_mb(); if (!atomic_read(&md->pending) || signal_pending(current)) break; -- 2.41.1