tree 13a075d1423b2caa3d3264db0cf8cd378c545623
parent 4a5add49951e698073011855d1a8a7306bc9308d
author NeilBrown <neilb@suse.de> 1280109427 +1000
committer NeilBrown <neilb@suse.de> 1280112749 +1000

md/raid5: export is_congested test

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>