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[PATCH] md: make sure resync gets started when array starts. 

We weren't actually waking up the md thread after setting
MD_RECOVERY_NEEDED when assembling an array, so it is possible to lose a
race and not actually start resync.

So add a call to md_wakeup_thread, and while we are at it, remove all the
"if (mddev->thread)" guards as md_wake_thread does its own checking.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2005-08-22 13:11:08 -07:00 committed by Linus Torvalds
parent 4c5640cb5f
commit 005eca5e74
1 changed files with 3 additions and 4 deletions
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7
drivers/md/md.c
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@ -256,8 +256,7 @@ static inline void mddev_unlock(mddev_t * mddev)
{
up(&mddev->reconfig_sem);
if (mddev->thread)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->thread);
}
mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr)
@ -1714,6 +1713,7 @@ static int do_md_run(mddev_t * mddev)
mddev->in_sync = 1;
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
if (mddev->sb_dirty)
md_update_sb(mddev);
@ -2236,8 +2236,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
export_rdev(rdev);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
if (mddev->thread)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->thread);
return err;
}