From: Kevin Wolf <kwolf@redhat.com>
To: qemu-block@nongnu.org
Cc: kwolf@redhat.com, mreitz@redhat.com, stefanha@redhat.com,
famz@redhat.com, sw@weilnetz.de, qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH 00/17] block: Convert .bdrv_read/write to .bdrv_preadv/pwritev
Date: Wed, 27 Apr 2016 11:52:30 +0200 [thread overview]
Message-ID: <1461750767-23273-1-git-send-email-kwolf@redhat.com> (raw)
This series introduces a new BlockDriver interface, which will hopefully be the
final one, or at least good enough for another few years: .bdrv_preadv/pwritev.
It is based on coroutines, vectored, has flags and uses a byte granularity.
This is now the preferred interface for new drivers.
All drivers still using the legacy interface .bdrv_read/write are converted to
the new interface and the emulation code we had for the old interface is
removed. Most of the drivers become zero-copy with these patches as they are
vectored now; only vvfat continues to allocate a bounce buffer.
The less obscure formats (vmdk, vdi, vpc) also natively support byte-aligned
requests now. The block layer is still enforcing a minimal alignment of 512, so
this isn't actually used yet, but in a next step, we can lift this restriction
for drivers that implement .bdrv_preadv/pwritev.
Kevin Wolf (17):
block: Introduce bdrv_driver_preadv()
block: Introduce bdrv_driver_pwritev()
block: Support AIO drivers in bdrv_driver_preadv/pwritev()
block: Rename bdrv_co_do_preadv/writev to bdrv_co_preadv/writev
block: Introduce .bdrv_co_preadv/pwritev BlockDriver function
bochs: Implement .bdrv_co_preadv() interface
cloop: Implement .bdrv_co_preadv() interface
dmg: Implement .bdrv_co_preadv() interface
vdi: Implement .bdrv_co_preadv() interface
vdi: Implement .bdrv_co_pwritev() interface
vmdk: Add vmdk_find_offset_in_cluster()
vmdk: Implement .bdrv_co_preadv() interface
vmdk: Implement .bdrv_co_pwritev() interface
vpc: Implement .bdrv_co_preadv() interface
vpc: Implement .bdrv_co_pwritev() interface
vvfat: Implement .bdrv_co_preadv/pwritev interfaces
block: Remove BlockDriver.bdrv_read/write
block.c | 2 -
block/block-backend.c | 4 +-
block/bochs.c | 46 ++++---
block/cloop.c | 33 ++---
block/dmg.c | 36 +++---
block/io.c | 317 +++++++++++++++++++--------------------------
block/iscsi.c | 8 --
block/nbd.c | 9 --
block/raw_bsd.c | 12 +-
block/vdi.c | 127 ++++++++++--------
block/vmdk.c | 320 ++++++++++++++++++++++++++++------------------
block/vpc.c | 165 ++++++++++++------------
block/vvfat.c | 55 ++++++--
hw/ide/macio.c | 4 +-
include/block/block_int.h | 12 +-
15 files changed, 609 insertions(+), 541 deletions(-)
--
1.8.3.1
next reply other threads:[~2016-04-27 9:53 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 9:52 Kevin Wolf [this message]
2016-04-27 9:52 ` [Qemu-devel] [PATCH 01/17] block: Introduce bdrv_driver_preadv() Kevin Wolf
2016-04-27 13:52 ` Eric Blake
2016-04-27 9:52 ` [Qemu-devel] [PATCH 02/17] block: Introduce bdrv_driver_pwritev() Kevin Wolf
2016-04-27 14:03 ` Eric Blake
2016-04-27 9:52 ` [Qemu-devel] [PATCH 03/17] block: Support AIO drivers in bdrv_driver_preadv/pwritev() Kevin Wolf
2016-04-27 14:13 ` Eric Blake
2016-04-27 9:52 ` [Qemu-devel] [PATCH 04/17] block: Rename bdrv_co_do_preadv/writev to bdrv_co_preadv/writev Kevin Wolf
2016-04-27 14:34 ` Eric Blake
2016-04-27 14:40 ` Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 05/17] block: Introduce .bdrv_co_preadv/pwritev BlockDriver function Kevin Wolf
2016-04-27 15:44 ` Eric Blake
2016-04-27 9:52 ` [Qemu-devel] [PATCH 06/17] bochs: Implement .bdrv_co_preadv() interface Kevin Wolf
2016-04-27 14:06 ` Stefan Hajnoczi
2016-04-27 14:33 ` Kevin Wolf
2016-04-27 15:51 ` Eric Blake
2016-04-28 8:21 ` Kevin Wolf
2016-04-28 8:42 ` Markus Armbruster
2016-04-27 9:52 ` [Qemu-devel] [PATCH 07/17] cloop: " Kevin Wolf
2016-04-27 14:12 ` Stefan Hajnoczi
2016-04-27 9:52 ` [Qemu-devel] [PATCH 08/17] dmg: " Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 09/17] vdi: " Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 10/17] vdi: Implement .bdrv_co_pwritev() interface Kevin Wolf
2016-04-27 14:17 ` Stefan Hajnoczi
2016-04-27 14:36 ` Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 11/17] vmdk: Add vmdk_find_offset_in_cluster() Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 12/17] vmdk: Implement .bdrv_co_preadv() interface Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 13/17] vmdk: Implement .bdrv_co_pwritev() interface Kevin Wolf
2016-04-27 14:21 ` Stefan Hajnoczi
2016-04-27 9:52 ` [Qemu-devel] [PATCH 14/17] vpc: Implement .bdrv_co_preadv() interface Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 15/17] vpc: Implement .bdrv_co_pwritev() interface Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 16/17] vvfat: Implement .bdrv_co_preadv/pwritev interfaces Kevin Wolf
2016-04-27 9:52 ` [Qemu-devel] [PATCH 17/17] block: Remove BlockDriver.bdrv_read/write Kevin Wolf
2016-04-27 14:26 ` [Qemu-devel] [PATCH 00/17] block: Convert .bdrv_read/write to .bdrv_preadv/pwritev Stefan Hajnoczi
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=1461750767-23273-1-git-send-email-kwolf@redhat.com \
--to=kwolf@redhat.com \
--cc=famz@redhat.com \
--cc=mreitz@redhat.com \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
--cc=sw@weilnetz.de \
/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.