There are no more end-users of REQ_OP_WRITE_SAME left, so we can start
deleting it.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/scsi/sd.c | 75 ++++---------------------------------------
drivers/scsi/sd_zbc.c | 2 --
2 files changed, 7 insertions(+), 70 deletions(-)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 2d648d27bfd71..fde2857f9bbf5 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1034,13 +1034,13 @@ static void sd_config_write_same(struct scsi_disk *sdkp)
* Reporting a maximum number of blocks that is not aligned
* on the device physical size would cause a large write same
* request to be split into physically unaligned chunks by
- * __blkdev_issue_write_zeroes() and __blkdev_issue_write_same()
- * even if the caller of these functions took care to align the
- * large request. So make sure the maximum reported is aligned
- * to the device physical block size. This is only an optional
- * optimization for regular disks, but this is mandatory to
- * avoid failure of large write same requests directed at
- * sequential write required zones of host-managed ZBC disks.
+ * __blkdev_issue_write_zeroes() even if the caller of this
+ * functions took care to align the large request. So make sure
+ * the maximum reported is aligned to the device physical block
+ * size. This is only an optional optimization for regular
+ * disks, but this is mandatory to avoid failure of large write
+ * same requests directed at sequential write required zones of
+ * host-managed ZBC disks.
*/
sdkp->max_ws_blocks =
round_down(sdkp->max_ws_blocks,
@@ -1049,68 +1049,10 @@ static void sd_config_write_same(struct scsi_disk *sdkp)
}
out:
- blk_queue_max_write_same_sectors(q, sdkp->max_ws_blocks *
- (logical_block_size >> 9));
blk_queue_max_write_zeroes_sectors(q, sdkp->max_ws_blocks *
(logical_block_size >> 9));
}
-/**
- * sd_setup_write_same_cmnd - write the same data to multiple blocks
- * @cmd: command to prepare
- *
- * Will set up either WRITE SAME(10) or WRITE SAME(16) depending on
- * the preference indicated by the target device.
- **/
-static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
-{
- struct request *rq = scsi_cmd_to_rq(cmd);
- struct scsi_device *sdp = cmd->device;
- struct scsi_disk *sdkp = scsi_disk(rq->q->disk);
- struct bio *bio = rq->bio;
- u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq));
- u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq));
- blk_status_t ret;
-
- if (sdkp->device->no_write_same)
- return BLK_STS_TARGET;
-
- BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size);
-
- rq->timeout = SD_WRITE_SAME_TIMEOUT;
-
- if (sdkp->ws16 || lba > 0xffffffff || nr_blocks > 0xffff) {
- cmd->cmd_len = 16;
- cmd->cmnd[0] = WRITE_SAME_16;
- put_unaligned_be64(lba, &cmd->cmnd[2]);
- put_unaligned_be32(nr_blocks, &cmd->cmnd[10]);
- } else {
- cmd->cmd_len = 10;
- cmd->cmnd[0] = WRITE_SAME;
- put_unaligned_be32(lba, &cmd->cmnd[2]);
- put_unaligned_be16(nr_blocks, &cmd->cmnd[7]);
- }
-
- cmd->transfersize = sdp->sector_size;
- cmd->allowed = sdkp->max_retries;
-
- /*
- * For WRITE SAME the data transferred via the DATA OUT buffer is
- * different from the amount of data actually written to the target.
- *
- * We set up __data_len to the amount of data transferred via the
- * DATA OUT buffer so that blk_rq_map_sg sets up the proper S/G list
- * to transfer a single sector of data first, but then reset it to
- * the amount of data to be written right after so that the I/O path
- * knows how much to actually write.
- */
- rq->__data_len = sdp->sector_size;
- ret = scsi_alloc_sgtables(cmd);
- rq->__data_len = blk_rq_bytes(rq);
-
- return ret;
-}
-
static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
{
struct request *rq = scsi_cmd_to_rq(cmd);
@@ -1343,8 +1285,6 @@ static blk_status_t sd_init_command(struct scsi_cmnd *cmd)
}
case REQ_OP_WRITE_ZEROES:
return sd_setup_write_zeroes_cmnd(cmd);
- case REQ_OP_WRITE_SAME:
- return sd_setup_write_same_cmnd(cmd);
case REQ_OP_FLUSH:
return sd_setup_flush_cmnd(cmd);
case REQ_OP_READ:
@@ -2039,7 +1979,6 @@ static int sd_done(struct scsi_cmnd *SCpnt)
switch (req_op(req)) {
case REQ_OP_DISCARD:
case REQ_OP_WRITE_ZEROES:
- case REQ_OP_WRITE_SAME:
case REQ_OP_ZONE_RESET:
case REQ_OP_ZONE_RESET_ALL:
case REQ_OP_ZONE_OPEN:
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index 378d071e47cbc..7f466280993bb 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -423,7 +423,6 @@ static bool sd_zbc_need_zone_wp_update(struct request *rq)
return true;
case REQ_OP_WRITE:
case REQ_OP_WRITE_ZEROES:
- case REQ_OP_WRITE_SAME:
return blk_rq_zone_is_seq(rq);
default:
return false;
@@ -477,7 +476,6 @@ static unsigned int sd_zbc_zone_wp_update(struct scsi_cmnd *cmd,
rq->__sector += sdkp->zones_wp_offset[zno];
fallthrough;
case REQ_OP_WRITE_ZEROES:
- case REQ_OP_WRITE_SAME:
case REQ_OP_WRITE:
if (sdkp->zones_wp_offset[zno] < sd_zbc_zone_sectors(sdkp))
sdkp->zones_wp_offset[zno] +=
--
2.30.2
--
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