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author | 2017-05-01 14:09:21 -0700 | |
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committer | 2017-05-01 14:09:21 -0700 | |
commit | e265eb3a30543a237b2ebc4e0422ac82e55b07e4 (patch) | |
tree | 5485bce4a0645e5e9b6ef4686bd390b7b2599ffb /drivers/md/raid0.c | |
parent | Merge tag 'leds_for_4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/j.... (diff) | |
parent | md/raid10: skip spare disk as 'first' disk (diff) | |
download | linux-e265eb3a30543a237b2ebc4e0422ac82e55b07e4.tar.gz linux-e265eb3a30543a237b2ebc4e0422ac82e55b07e4.tar.bz2 linux-e265eb3a30543a237b2ebc4e0422ac82e55b07e4.zip |
Merge branch 'md-next' into md-linus
Diffstat (limited to 'drivers/md/raid0.c')
-rw-r--r-- | drivers/md/raid0.c | 78 |
1 files changed, 40 insertions, 38 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index ce7a6a56cf73..84e58596594d 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -29,7 +29,8 @@ #define UNSUPPORTED_MDDEV_FLAGS \ ((1L << MD_HAS_JOURNAL) | \ (1L << MD_JOURNAL_CLEAN) | \ - (1L << MD_FAILFAST_SUPPORTED)) + (1L << MD_FAILFAST_SUPPORTED) |\ + (1L << MD_HAS_PPL)) static int raid0_congested(struct mddev *mddev, int bits) { @@ -462,53 +463,54 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio) { struct strip_zone *zone; struct md_rdev *tmp_dev; - struct bio *split; + sector_t bio_sector; + sector_t sector; + unsigned chunk_sects; + unsigned sectors; if (unlikely(bio->bi_opf & REQ_PREFLUSH)) { md_flush_request(mddev, bio); return; } - do { - sector_t bio_sector = bio->bi_iter.bi_sector; - sector_t sector = bio_sector; - unsigned chunk_sects = mddev->chunk_sectors; + bio_sector = bio->bi_iter.bi_sector; + sector = bio_sector; + chunk_sects = mddev->chunk_sectors; - unsigned sectors = chunk_sects - - (likely(is_power_of_2(chunk_sects)) - ? (sector & (chunk_sects-1)) - : sector_div(sector, chunk_sects)); + sectors = chunk_sects - + (likely(is_power_of_2(chunk_sects)) + ? (sector & (chunk_sects-1)) + : sector_div(sector, chunk_sects)); - /* Restore due to sector_div */ - sector = bio_sector; + /* Restore due to sector_div */ + sector = bio_sector; - if (sectors < bio_sectors(bio)) { - split = bio_split(bio, sectors, GFP_NOIO, fs_bio_set); - bio_chain(split, bio); - } else { - split = bio; - } + if (sectors < bio_sectors(bio)) { + struct bio *split = bio_split(bio, sectors, GFP_NOIO, mddev->bio_set); + bio_chain(split, bio); + generic_make_request(bio); + bio = split; + } - zone = find_zone(mddev->private, §or); - tmp_dev = map_sector(mddev, zone, sector, §or); - split->bi_bdev = tmp_dev->bdev; - split->bi_iter.bi_sector = sector + zone->dev_start + - tmp_dev->data_offset; - - if (unlikely((bio_op(split) == REQ_OP_DISCARD) && - !blk_queue_discard(bdev_get_queue(split->bi_bdev)))) { - /* Just ignore it */ - bio_endio(split); - } else { - if (mddev->gendisk) - trace_block_bio_remap(bdev_get_queue(split->bi_bdev), - split, disk_devt(mddev->gendisk), - bio_sector); - mddev_check_writesame(mddev, split); - mddev_check_write_zeroes(mddev, split); - generic_make_request(split); - } - } while (split != bio); + zone = find_zone(mddev->private, §or); + tmp_dev = map_sector(mddev, zone, sector, §or); + bio->bi_bdev = tmp_dev->bdev; + bio->bi_iter.bi_sector = sector + zone->dev_start + + tmp_dev->data_offset; + + if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && + !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) { + /* Just ignore it */ + bio_endio(bio); + } else { + if (mddev->gendisk) + trace_block_bio_remap(bdev_get_queue(bio->bi_bdev), + bio, disk_devt(mddev->gendisk), + bio_sector); + mddev_check_writesame(mddev, bio); + mddev_check_write_zeroes(mddev, bio); + generic_make_request(bio); + } } static void raid0_status(struct seq_file *seq, struct mddev *mddev) |