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authorKent Overstreet <kent.overstreet@gmail.com>2015-04-28 09:48:34 +0300
committerJens Axboe <axboe@fb.com>2015-08-13 21:31:57 +0300
commit8ae126660fddbeebb9251a174e6fa45b6ad8f932 (patch)
treefe471f94c8686b59f7a07b5b4f59ee4f51254902 /drivers/md/dm-linear.c
parent7140aafce2fc14c5af02fdb7859b6bea0108be3d (diff)
downloadlinux-8ae126660fddbeebb9251a174e6fa45b6ad8f932.tar.xz
block: kill merge_bvec_fn() completely
As generic_make_request() is now able to handle arbitrarily sized bios, it's no longer necessary for each individual block driver to define its own ->merge_bvec_fn() callback. Remove every invocation completely. Cc: Jens Axboe <axboe@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: drbd-user@lists.linbit.com Cc: Jiri Kosina <jkosina@suse.cz> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@kernel.org> Cc: ceph-devel@vger.kernel.org Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: Neil Brown <neilb@suse.de> Cc: linux-raid@vger.kernel.org Cc: Christoph Hellwig <hch@infradead.org> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: NeilBrown <neilb@suse.de> (for the 'md' bits) Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> [dpark: also remove ->merge_bvec_fn() in dm-thin as well as dm-era-target, and resolve merge conflicts] Signed-off-by: Dongsu Park <dpark@posteo.net> Signed-off-by: Ming Lin <ming.l@ssi.samsung.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/dm-linear.c')
-rw-r--r--drivers/md/dm-linear.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 53e848c10939..7dd5fc8e3eea 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -130,21 +130,6 @@ static int linear_ioctl(struct dm_target *ti, unsigned int cmd,
return r ? : __blkdev_driver_ioctl(dev->bdev, dev->mode, cmd, arg);
}
-static int linear_merge(struct dm_target *ti, struct bvec_merge_data *bvm,
- struct bio_vec *biovec, int max_size)
-{
- struct linear_c *lc = ti->private;
- struct request_queue *q = bdev_get_queue(lc->dev->bdev);
-
- if (!q->merge_bvec_fn)
- return max_size;
-
- bvm->bi_bdev = lc->dev->bdev;
- bvm->bi_sector = linear_map_sector(ti, bvm->bi_sector);
-
- return min(max_size, q->merge_bvec_fn(q, bvm, biovec));
-}
-
static int linear_iterate_devices(struct dm_target *ti,
iterate_devices_callout_fn fn, void *data)
{
@@ -162,7 +147,6 @@ static struct target_type linear_target = {
.map = linear_map,
.status = linear_status,
.ioctl = linear_ioctl,
- .merge = linear_merge,
.iterate_devices = linear_iterate_devices,
};