From ed9b66d21866ae3bf16557406258ebe6c00a9a84 Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@fb.com>
Date: Tue, 25 Jul 2017 15:18:13 -0700
Subject: [PATCH] MD: fix warnning for UP case
Git-commit: ed9b66d21866ae3bf16557406258ebe6c00a9a84
Patch-mainline: v4.13-rc3
References: fate#322738,fate#322919,fate#322950,fate#323773
spin_is_locked always returns 0 for UP case, so ignores it
Reported-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/md.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cdca0296749..c99634612fc4 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2287,7 +2287,7 @@ static void export_array(struct mddev *mddev)
static bool set_in_sync(struct mddev *mddev)
{
- WARN_ON_ONCE(!spin_is_locked(&mddev->lock));
+ WARN_ON_ONCE(NR_CPUS != 1 && !spin_is_locked(&mddev->lock));
if (!mddev->in_sync) {
mddev->sync_checkers++;
spin_unlock(&mddev->lock);
--
2.13.1