4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Zhilong Liu <[email protected]> [ 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 <[email protected]> Reviewed-by: Guoqing Jiang <[email protected]> Signed-off-by: Shaohua Li <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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)
