[PATCH v5 07/11] md/raid5: get rid of bio_fits_rdev()

mlin
2015-07-06T07:12:34Z

From: Kent Overstreet <kent.overstreet@gmail.com>

Remove bio_fits_rdev() as sufficient merge_bvec_fn() handling is now
performed by blk_queue_split() in md_make_request().

Cc: Neil Brown <neilb@suse.de>
Cc: linux-raid@vger.kernel.org
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
[dpark: add more description in commit message]
Signed-off-by: Dongsu Park <dpark@posteo.net>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
---
drivers/md/raid5.c | 23 +----------------------
1 file changed, 1 insertion(+), 22 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 8377e72..8bdf81a 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4780,25 +4780,6 @@ static void raid5_align_endio(struct bio *bi, int error)
add_bio_to_retry(raid_bi, conf);
}

-static int bio_fits_rdev(struct bio *bi)
-{
- struct request_queue *q = bdev_get_queue(bi->bi_bdev);
-
- if (bio_sectors(bi) > queue_max_sectors(q))
- return 0;
- blk_recount_segments(q, bi);
- if (bi->bi_phys_segments > queue_max_segments(q))
- return 0;
-
- if (q->merge_bvec_fn)
- /* it's too hard to apply the merge_bvec_fn at this stage,
- * just just give up
- */
- return 0;
-
- return 1;
-}
-
static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
{
struct r5conf *conf = mddev->private;
@@ -4852,11 +4833,9 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
align_bi->bi_bdev = rdev->bdev;
__clear_bit(BIO_SEG_VALID, &align_bi->bi_flags);

- if (!bio_fits_rdev(align_bi) ||
- is_badblock(rdev, align_bi->bi_iter.bi_sector,
+ if (is_badblock(rdev, align_bi->bi_iter.bi_sector,
bio_sectors(align_bi),
&first_bad, &bad_sectors)) {
- /* too big in some way, or has a known bad block */
bio_put(align_bi);
rdev_dec_pending(rdev, mddev);
return 0;
--
1.9.1