md: add support for raising dm events.

dm uses scheduled work to raise events to user-space.
So allow md device to have work_structs and schedule them on an error.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-07-26 11:49:55 +10:00
commit 768a418db1
2 changed files with 3 additions and 0 deletions