MD:Update superblock when err == 0 in size_store

This is a simple check before updating the superblock. It should update
the superblock when update_size return 0.

Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Xiao Ni 2016-06-12 17:18:00 +08:00 • committed by Shaohua Li
commit 4ba1e78891