diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-02-09 11:28:27 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-23 05:11:08 +0300 |
| commit | a773187e37fa5c3bcd92ffda9085707df34f903a (patch) | |
| tree | 71389a9211836c9b3c3c32b74ffca93285f1450b /drivers/md/dm-io.c | |
| parent | 10fa225c33a97385f2843e60b8e86b0ce0cd1e5f (diff) | |
| download | linux-a773187e37fa5c3bcd92ffda9085707df34f903a.tar.xz | |
scsi: dm: Remove WRITE_SAME support
There are no more end-users of REQ_OP_WRITE_SAME left, so we can start
deleting it.
Link: https://lore.kernel.org/r/20220209082828.2629273-7-hch@lst.de
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/md/dm-io.c')
| -rw-r--r-- | drivers/md/dm-io.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 2d3cda0acacb..82d431677bb6 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -304,7 +304,6 @@ static void do_region(int op, int op_flags, unsigned region, unsigned num_bvecs; sector_t remaining = where->count; struct request_queue *q = bdev_get_queue(where->bdev); - unsigned short logical_block_size = queue_logical_block_size(q); sector_t num_sectors; unsigned int special_cmd_max_sectors; @@ -315,10 +314,8 @@ static void do_region(int op, int op_flags, unsigned region, special_cmd_max_sectors = q->limits.max_discard_sectors; else if (op == REQ_OP_WRITE_ZEROES) special_cmd_max_sectors = q->limits.max_write_zeroes_sectors; - else if (op == REQ_OP_WRITE_SAME) - special_cmd_max_sectors = q->limits.max_write_same_sectors; - if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_ZEROES || - op == REQ_OP_WRITE_SAME) && special_cmd_max_sectors == 0) { + if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_ZEROES) && + special_cmd_max_sectors == 0) { atomic_inc(&io->count); dec_count(io, region, BLK_STS_NOTSUPP); return; @@ -337,9 +334,6 @@ static void do_region(int op, int op_flags, unsigned region, case REQ_OP_WRITE_ZEROES: num_bvecs = 0; break; - case REQ_OP_WRITE_SAME: - num_bvecs = 1; - break; default: num_bvecs = bio_max_segs(dm_sector_div_up(remaining, (PAGE_SIZE >> SECTOR_SHIFT))); @@ -356,18 +350,6 @@ static void do_region(int op, int op_flags, unsigned region, num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining); bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT; remaining -= num_sectors; - } else if (op == REQ_OP_WRITE_SAME) { - /* - * WRITE SAME only uses a single page. - */ - dp->get_page(dp, &page, &len, &offset); - bio_add_page(bio, page, logical_block_size, offset); - num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining); - bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT; - - offset = 0; - remaining -= num_sectors; - dp->next_page(dp); } else while (remaining) { /* * Try and add as many pages as possible. |