4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhilong Liu <zlliu@xxxxxxxx>
[ Upstream commit b670883bb9e55ba63a278d83e034faefc01ce2cf ]
md.c: it needs to release the mddev lock before
the array_size_store() returns.
Fixes: ab5a98b132fd ("md-cluster: change array_sectors and update size are not supported")
Signed-off-by: Zhilong Liu <zlliu@xxxxxxxx>
Reviewed-by: Guoqing Jiang <gqjiang@xxxxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/md.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4826,8 +4826,10 @@ array_size_store(struct mddev *mddev, co
return err;
/* cluster raid doesn't support change array_sectors */
- if (mddev_is_clustered(mddev))
+ if (mddev_is_clustered(mddev)) {
+ mddev_unlock(mddev);
return -EINVAL;
+ }
if (strncmp(buf, "default", 7) == 0) {
if (mddev->pers)