Now that we are using REQ_OP_WRITE_ZEROES for all zeroing needs in the
kernel there is very little use left for REQ_OP_WRITE_SAME. We only
have two callers left, and both just export optional protocol features
to remote systems: DRBD and the target code.
For the target code the only real use case was zeroing offload, which
is kept with this series, and for DRBD I suspect the same based on the
usage.
git://git.infradead.org/users/hch/block.git delete-write-same
Gitweb:
http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/delete-write-same
Changes since v2:
- split up
- rebased ontop of five years of kernel change, including the totally
pointless addition of REQ_OP_WRITE_SAME in rnbd
Changes from RFC:
- add zeroing offload for the SCSI target.
Diffstat:
block/blk-core.c | 13 -----
block/blk-lib.c | 91 -------------------------------------
block/blk-merge.c | 40 ----------------
block/blk-settings.c | 16 ------
block/blk-sysfs.c | 8 ---
block/blk-zoned.c | 1
block/blk.h | 1
block/bounce.c | 3 -
drivers/block/drbd/drbd_main.c | 31 +-----------
drivers/block/drbd/drbd_nl.c | 72 -----------------------------
drivers/block/drbd/drbd_receiver.c | 47 ++-----------------
drivers/block/drbd/drbd_req.c | 1
drivers/block/drbd/drbd_worker.c | 5 --
drivers/block/rnbd/rnbd-clt.c | 7 --
drivers/block/rnbd/rnbd-clt.h | 1
drivers/block/rnbd/rnbd-proto.h | 6 --
drivers/block/rnbd/rnbd-srv.c | 3 -
drivers/md/dm-core.h | 1
drivers/md/dm-crypt.c | 1
drivers/md/dm-ebs-target.c | 1
drivers/md/dm-io.c | 22 --------
drivers/md/dm-linear.c | 1
drivers/md/dm-mpath.c | 1
drivers/md/dm-rq.c | 3 -
drivers/md/dm-stripe.c | 4 -
drivers/md/dm-table.c | 29 -----------
drivers/md/dm-zone.c | 4 -
drivers/md/dm.c | 15 ------
drivers/md/md-linear.c | 1
drivers/md/md-multipath.c | 1
drivers/md/md.h | 7 --
drivers/md/raid0.c | 2
drivers/md/raid1.c | 4 -
drivers/md/raid10.c | 1
drivers/md/raid5.c | 1
drivers/scsi/cxlflash/vlun.c | 4 -
drivers/scsi/sd.c | 75 ++----------------------------
drivers/scsi/sd_zbc.c | 2
include/linux/bio.h | 3 -
include/linux/blk_types.h | 2
include/linux/blkdev.h | 19 -------
include/linux/device-mapper.h | 6 --
kernel/trace/blktrace.c | 1
43 files changed, 30 insertions(+), 527 deletions(-)
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