Commit 7e5c1e83 authored Feb 08, 2008 by Milan Broz Committed by Alasdair G Kergon Feb 08, 2008

dm: add missing memory barrier to dm_suspend



Add memory barrier to fix atomic_read of pending value.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

parent df922075

drivers/md/dm.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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;