diff options
| author | NeilBrown <neilb@suse.de> | 2015-05-21 01:10:01 -0400 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2015-05-27 21:29:14 -0400 |
| commit | 2b6b24574256c05be145936f1493aec74c6904e5 (patch) | |
| tree | 76ccb20859a5693323f1130411b4b8c565967b99 /drivers/md/raid5.c | |
| parent | 8532e3439087de69bb1b71fd6be2baa6fc196a55 (diff) | |
md/raid5: ensure whole batch is delayed for all required bitmap updates.
When we add a stripe to a batch, we need to be sure that
head stripe will wait for the bitmap update required for the new
stripe.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index b9f2b9cc6060..c55a68f37c72 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c | |||
| @@ -837,6 +837,15 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh | |||
| 837 | < IO_THRESHOLD) | 837 | < IO_THRESHOLD) |
| 838 | md_wakeup_thread(conf->mddev->thread); | 838 | md_wakeup_thread(conf->mddev->thread); |
| 839 | 839 | ||
| 840 | if (test_and_clear_bit(STRIPE_BIT_DELAY, &sh->state)) { | ||
| 841 | int seq = sh->bm_seq; | ||
| 842 | if (test_bit(STRIPE_BIT_DELAY, &sh->batch_head->state) && | ||
| 843 | sh->batch_head->bm_seq > seq) | ||
| 844 | seq = sh->batch_head->bm_seq; | ||
| 845 | set_bit(STRIPE_BIT_DELAY, &sh->batch_head->state); | ||
| 846 | sh->batch_head->bm_seq = seq; | ||
| 847 | } | ||
| 848 | |||
| 840 | atomic_inc(&sh->count); | 849 | atomic_inc(&sh->count); |
| 841 | unlock_out: | 850 | unlock_out: |
| 842 | unlock_two_stripes(head, sh); | 851 | unlock_two_stripes(head, sh); |