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authorGuoqing Jiang <guoqing.jiang@cloud.ionos.com>2020-07-28 13:01:42 +0300
committerSong Liu <songliubraving@fb.com>2020-08-03 09:03:52 +0300
commit01b5d32a57fe83820d014485a4c41965bc3b5ce4 (patch)
treecddc4e9f014b815d95f62d7cfbd845f1a71a1c6a /drivers/md/raid5-cache.c
parentb3db8a216393cc228ab4add580f488da55177b66 (diff)
downloadlinux-01b5d32a57fe83820d014485a4c41965bc3b5ce4.tar.xz
raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show
Replace mddev_lock with spin_lock to align with other show methods in raid5_attrs. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
Diffstat (limited to 'drivers/md/raid5-cache.c')
-rw-r--r--drivers/md/raid5-cache.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 82eb4a906e31..4337ae0e6af2 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -2537,13 +2537,10 @@ static ssize_t r5c_journal_mode_show(struct mddev *mddev, char *page)
struct r5conf *conf;
int ret;
- ret = mddev_lock(mddev);
- if (ret)
- return ret;
-
+ spin_lock(&mddev->lock);
conf = mddev->private;
if (!conf || !conf->log) {
- mddev_unlock(mddev);
+ spin_unlock(&mddev->lock);
return 0;
}
@@ -2563,7 +2560,7 @@ static ssize_t r5c_journal_mode_show(struct mddev *mddev, char *page)
default:
ret = 0;
}
- mddev_unlock(mddev);
+ spin_unlock(&mddev->lock);
return ret;
}