[Qemu-devel] [PATCH 00/17] byte-based block discard

[Eric Blake <eblake@redhat.com>]

Another step towards making NBD pass a byte-aligned discard
request over the wire.  Actually, until both raw_bsd.c and
nbd-client.c support .bdrv_co_preadv(), the block layer still
sets up a required_alignment of 512, so with this series alone,
the NBD_CMD_TRIM requests are still aligned to sector
boundaries (but now the logic is central to the block layer
rather than NBD).  So you can probably figure out what my next
series will be :)

Prerequisite: Kevin's block branch, plus my work on byte-based
block limits (v2 at the moment):
https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg04006.html
and tested (but probably not hard requirement) on top of my
work on auto-fragmenting:
https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg05819.html

Also available as a tag at:
git fetch git://repo.or.cz/qemu/ericb.git nbd-discard-v1

Eric Blake (17):
  block: Convert bdrv_co_discard() to byte-based
  block: Convert bdrv_discard() to byte-based
  block: Switch BlockRequest to byte-based
  block: Convert bdrv_aio_discard() to byte-based
  block: Convert BB interface to byte-based discards
  raw-posix: Switch paio_submit() to byte-based
  rbd: Switch rbd_start_aio() to byte-based
  block: Convert .bdrv_aio_discard() to byte-based
  block: Add .bdrv_co_pdiscard() driver callback
  blkreplay: Switch .bdrv_co_discard() to byte-based
  gluster: Switch .bdrv_co_discard() to byte-based
  iscsi: Switch .bdrv_co_discard() to byte-based
  nbd: Switch .bdrv_co_discard() to byte-based
  qcow2: Switch .bdrv_co_discard() to byte-based
  raw_bsd: Switch .bdrv_co_discard() to byte-based
  sheepdog: Switch .bdrv_co_discard() to byte-based
  block: Kill .bdrv_co_discard()

 block/nbd-client.h             |   3 +-
 include/block/block.h          |  10 +--
 include/block/block_int.h      |   8 +--
 include/sysemu/block-backend.h |   9 ++-
 block/blkreplay.c              |   8 +--
 block/block-backend.c          |  22 +++---
 block/gluster.c                |  14 ++--
 block/io.c                     | 156 ++++++++++++++++++++---------------------
 block/iscsi.c                  |  18 +++--
 block/mirror.c                 |   5 +-
 block/nbd-client.c             |  11 +--
 block/nbd.c                    |  12 +---
 block/qcow2-refcount.c         |   4 +-
 block/qcow2.c                  |  10 +--
 block/raw-posix.c              |  24 +++----
 block/raw-win32.c              |  19 ++---
 block/raw_bsd.c                |   8 +--
 block/rbd.c                    |  29 ++++----
 block/sheepdog.c               |  17 +++--
 hw/block/xen_disk.c            |   7 +-
 hw/ide/core.c                  |   6 +-
 hw/scsi/scsi-disk.c            |   8 +--
 nbd/server.c                   |  19 ++---
 qemu-io-cmds.c                 |   3 +-
 block/trace-events             |   4 +-
 25 files changed, 209 insertions(+), 225 deletions(-)

-- 
2.5.5