From: Christoph Hellwig <hch@lst.de>
To: axboe@kernel.dk, martin.petersen@oracle.com,
philipp.reisner@linbit.com, lars.ellenberg@linbit.com,
target-devel@vger.kernel.org
Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
drbd-dev@lists.linbit.com, dm-devel@redhat.com
Subject: remove REQ_OP_WRITE_SAME
Date: Wed, 12 Apr 2017 10:48:01 +0200 [thread overview]
Message-ID: <20170412084809.8245-1-hch@lst.de> (raw)
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 from RFC:
- add zeroing offload for the SCSI target.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
philipp.reisner-63ez5xqkn6DQT0dZR+AlfA@public.gmane.org,
lars.ellenberg-63ez5xqkn6DQT0dZR+AlfA@public.gmane.org,
target-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org
Subject: remove REQ_OP_WRITE_SAME
Date: Wed, 12 Apr 2017 10:48:01 +0200 [thread overview]
Message-ID: <20170412084809.8245-1-hch@lst.de> (raw)
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 from RFC:
- add zeroing offload for the SCSI target.
next reply other threads:[~2017-04-12 8:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-12 8:48 Christoph Hellwig [this message]
2017-04-12 8:48 ` remove REQ_OP_WRITE_SAME Christoph Hellwig
2017-04-12 8:48 ` [PATCH 1/8] drbd: drop REQ_OP_WRITE_SAME support Christoph Hellwig
2017-04-12 8:48 ` [PATCH 2/8] target/iblock: convert WRITE_SAME to blkdev_issue_zeroout Christoph Hellwig
2017-04-12 8:48 ` Christoph Hellwig
2017-04-12 8:48 ` [PATCH 3/8] sd: remove write same support Christoph Hellwig
2017-04-12 8:48 ` Christoph Hellwig
2017-04-12 8:48 ` [PATCH 4/8] md: drop WRITE_SAME support Christoph Hellwig
2017-04-12 8:48 ` [PATCH 5/8] dm: remove write same support Christoph Hellwig
2017-04-12 8:48 ` [PATCH 6/8] block: remove REQ_OP_WRITE_SAME support Christoph Hellwig
2017-04-12 8:48 ` [PATCH 7/8] block: remove bio_no_advance_iter Christoph Hellwig
2017-04-12 8:48 ` [PATCH 8/8] block: use bio_has_data to check if a bio has bvecs Christoph Hellwig
2017-04-14 2:23 ` remove REQ_OP_WRITE_SAME Martin K. Petersen
2017-04-14 2:23 ` Martin K. Petersen
2017-05-05 8:57 ` Christoph Hellwig
2017-05-05 8:57 ` Christoph Hellwig
2017-05-09 2:06 ` Martin K. Petersen
2017-05-09 2:06 ` Martin K. Petersen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170412084809.8245-1-hch@lst.de \
--to=hch@lst.de \
--cc=axboe@kernel.dk \
--cc=dm-devel@redhat.com \
--cc=drbd-dev@lists.linbit.com \
--cc=lars.ellenberg@linbit.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=philipp.reisner@linbit.com \
--cc=target-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.