md/raid5: export is_congested test
authorNeilBrown <neilb@suse.de>
Mon, 26 Jul 2010 01:57:07 +0000 (11:57 +1000)
committerNeilBrown <neilb@suse.de>
Mon, 26 Jul 2010 02:52:29 +0000 (12:52 +1000)
the dm module will need this for dm-raid45.

Also only access ->queue->backing_dev_info->congested_fn
if ->queue actually exists.  It won't in a dm target.

Signed-off-by: NeilBrown <neilb@suse.de>
drivers/md/raid5.c
drivers/md/raid5.h

Simple merge
Simple merge