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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
parent 390ee602a1
commit 768a418db1
2 changed files with 3 additions and 0 deletions
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2
drivers/md/md.c
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@ -6068,6 +6068,8 @@ void md_error(mddev_t *mddev, mdk_rdev_t *rdev)
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
if (mddev->event_work.func)
schedule_work(&mddev->event_work);
md_new_event_inintr(mddev);
}

1
drivers/md/md.h
View File

@ -318,6 +318,7 @@ struct mddev_s
struct bio *barrier;
atomic_t flush_pending;
struct work_struct barrier_work;
struct work_struct event_work; /* used by dm to report failure event */
};