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md/raid5: move checking badblock before clone bio in raid5_read_one_chunk

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We don't need to clone bio if the relevant region has badblock.

Signed-off-by: Guoqing Jiang <jiangguoqing@kylinos.cn>
Signed-off-by: Song Liu <song@kernel.org>
This commit is contained in:
Guoqing Jiang 2021-05-25 17:46:18 +08:00 committed by Song Liu
parent 10764815ff
commit c82aa1b767
1 changed files with 7 additions and 7 deletions
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14
drivers/md/raid5.c
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@ -5427,6 +5427,13 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
if (is_badblock(rdev, sector, bio_sectors(raid_bio), &first_bad,
&bad_sectors)) {
bio_put(raid_bio);
rdev_dec_pending(rdev, mddev);
return 0;
}
align_bio = bio_clone_fast(raid_bio, GFP_NOIO, &mddev->bio_set);
bio_set_dev(align_bio, rdev->bdev);
align_bio->bi_end_io = raid5_align_endio;
@ -5435,13 +5442,6 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
raid_bio->bi_next = (void *)rdev;
if (is_badblock(rdev, sector, bio_sectors(align_bio), &first_bad,
&bad_sectors)) {
bio_put(align_bio);
rdev_dec_pending(rdev, mddev);
return 0;
}
/* No reshape active, so we can trust rdev->data_offset */
align_bio->bi_iter.bi_sector += rdev->data_offset;