diff options
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 50 |
1 files changed, 6 insertions, 44 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index a08f49b47b7e..5c79429acc64 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -906,8 +906,7 @@ static bool stripe_can_batch(struct stripe_head *sh) if (raid5_has_log(conf) || raid5_has_ppl(conf)) return false; return test_bit(STRIPE_BATCH_READY, &sh->state) && - !test_bit(STRIPE_BITMAP_PENDING, &sh->state) && - is_full_stripe_write(sh); + is_full_stripe_write(sh); } /* we only do back search */ @@ -3545,29 +3544,9 @@ static void __add_stripe_bio(struct stripe_head *sh, struct bio *bi, (*bip)->bi_iter.bi_sector, sh->sector, dd_idx, sh->dev[dd_idx].sector); - if (conf->mddev->bitmap && firstwrite) { - /* Cannot hold spinlock over bitmap_startwrite, - * but must ensure this isn't added to a batch until - * we have added to the bitmap and set bm_seq. - * So set STRIPE_BITMAP_PENDING to prevent - * batching. - * If multiple __add_stripe_bio() calls race here they - * much all set STRIPE_BITMAP_PENDING. So only the first one - * to complete "bitmap_startwrite" gets to set - * STRIPE_BIT_DELAY. This is important as once a stripe - * is added to a batch, STRIPE_BIT_DELAY cannot be changed - * any more. - */ - set_bit(STRIPE_BITMAP_PENDING, &sh->state); - spin_unlock_irq(&sh->stripe_lock); - conf->mddev->bitmap_ops->startwrite(conf->mddev, sh->sector, - RAID5_STRIPE_SECTORS(conf)); - spin_lock_irq(&sh->stripe_lock); - clear_bit(STRIPE_BITMAP_PENDING, &sh->state); - if (!sh->batch_head) { - sh->bm_seq = conf->seq_flush+1; - set_bit(STRIPE_BIT_DELAY, &sh->state); - } + if (conf->mddev->bitmap && firstwrite && !sh->batch_head) { + sh->bm_seq = conf->seq_flush+1; + set_bit(STRIPE_BIT_DELAY, &sh->state); } } @@ -3618,7 +3597,6 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, BUG_ON(sh->batch_head); for (i = disks; i--; ) { struct bio *bi; - int bitmap_end = 0; if (test_bit(R5_ReadError, &sh->dev[i].flags)) { struct md_rdev *rdev = conf->disks[i].rdev; @@ -3643,8 +3621,6 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, sh->dev[i].towrite = NULL; sh->overwrite_disks = 0; spin_unlock_irq(&sh->stripe_lock); - if (bi) - bitmap_end = 1; log_stripe_write_finished(sh); @@ -3659,10 +3635,6 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, bio_io_error(bi); bi = nextbi; } - if (bitmap_end) - conf->mddev->bitmap_ops->endwrite(conf->mddev, - sh->sector, RAID5_STRIPE_SECTORS(conf)); - bitmap_end = 0; /* and fail all 'written' */ bi = sh->dev[i].written; sh->dev[i].written = NULL; @@ -3671,7 +3643,6 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, sh->dev[i].page = sh->dev[i].orig_page; } - if (bi) bitmap_end = 1; while (bi && bi->bi_iter.bi_sector < sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { struct bio *bi2 = r5_next_bio(conf, bi, sh->dev[i].sector); @@ -3705,9 +3676,6 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, bi = nextbi; } } - if (bitmap_end) - conf->mddev->bitmap_ops->endwrite(conf->mddev, - sh->sector, RAID5_STRIPE_SECTORS(conf)); /* If we were in the middle of a write the parity block might * still be locked - so just clear all R5_LOCKED flags */ @@ -4056,8 +4024,7 @@ returnbi: bio_endio(wbi); wbi = wbi2; } - conf->mddev->bitmap_ops->endwrite(conf->mddev, - sh->sector, RAID5_STRIPE_SECTORS(conf)); + if (head_sh->batch_head) { sh = list_first_entry(&sh->batch_list, struct stripe_head, @@ -4882,8 +4849,7 @@ static void break_stripe_batch_list(struct stripe_head *head_sh, (1 << STRIPE_COMPUTE_RUN) | (1 << STRIPE_DISCARD) | (1 << STRIPE_BATCH_READY) | - (1 << STRIPE_BATCH_ERR) | - (1 << STRIPE_BITMAP_PENDING)), + (1 << STRIPE_BATCH_ERR)), "stripe state: %lx\n", sh->state); WARN_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) | (1 << STRIPE_REPLACED)), @@ -5774,10 +5740,6 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi) } spin_unlock_irq(&sh->stripe_lock); if (conf->mddev->bitmap) { - for (d = 0; d < conf->raid_disks - conf->max_degraded; - d++) - mddev->bitmap_ops->startwrite(mddev, sh->sector, - RAID5_STRIPE_SECTORS(conf)); sh->bm_seq = conf->seq_flush + 1; set_bit(STRIPE_BIT_DELAY, &sh->state); } |