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Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.11 

Pull MD fix from Song.

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md: Set prev_flush_start and flush_bio in an atomic way
master
Jens Axboe 2021-01-20 09:32:02 -07:00
parent b4f664252f dc5d17a3c3
commit 8dfe116817
1 changed files with 2 additions and 0 deletions
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2
drivers/md/md.c
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@ -639,8 +639,10 @@ static void md_submit_flush_data(struct work_struct *ws)
* could wait for this and below md_handle_request could wait for those
* bios because of suspend check
*/
spin_lock_irq(&mddev->lock);
mddev->prev_flush_start = mddev->start_flush;
mddev->flush_bio = NULL;
spin_unlock_irq(&mddev->lock);
wake_up(&mddev->sb_wait);
if (bio->bi_iter.bi_size == 0) {