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md: Fix regression with raid1 arrays without persistent metadata.

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A RAID1 which has no persistent metadata, whether internal or
external, will hang on the first write.
This is caused by commit  070dc6dd71
In that case, MD_CHANGE_PENDING never gets cleared.

So during md_update_sb, is neither persistent or external,
clear MD_CHANGE_PENDING.

This is suitable for 2.6.36-stable.

Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org
This commit is contained in:
NeilBrown 2010-10-28 17:30:20 +11:00
parent 12ba8d1e92
commit d97a41dc9c
1 changed files with 2 additions and 0 deletions
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2
drivers/md/md.c
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@ -2108,6 +2108,8 @@ repeat:
if (!mddev->persistent) {
clear_bit(MD_CHANGE_CLEAN, &mddev->flags);
clear_bit(MD_CHANGE_DEVS, &mddev->flags);
if (!mddev->external)
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
wake_up(&mddev->sb_wait);
return;
}