md: Wait for md_check_recovery before attempting device removal.
authorHannes Reinecke <hare@suse.de>
Tue, 2 Apr 2013 06:38:55 +0000 (08:38 +0200)
committerNeilBrown <neilb@suse.de>
Thu, 13 Jun 2013 22:10:26 +0000 (08:10 +1000)
commit90f5f7ad4f38d67626b0c220a0ac390603e0bded
tree740a41f4c451e0ee0f65f4fb3ca3120bce8b4189
parent3f6bbd3ffd7b733dd705e494663e5761aa2cb9c1
md: Wait for md_check_recovery before attempting device removal.

When a device has failed, it needs to be removed from the personality
module before it can be removed from the array as a whole.
The first step is performed by md_check_recovery() which is called
from the raid management thread.

So when a HOT_REMOVE ioctl arrives, wait briefly for md_check_recovery
to have run.  This increases the chance that the ioctl will succeed.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Neil Brown <nfbrown@suse.de>
drivers/md/md.c