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Re: [Qemu-devel] [PATCH v2 0/6] block: Enable byte granularity I/O
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/6] block: Enable byte granularity I/O |
Date: |
Wed, 15 Jun 2016 10:02:51 +0100 |
User-agent: |
Mutt/1.6.1 (2016-04-27) |
On Tue, Jun 14, 2016 at 03:32:29PM +0200, Kevin Wolf wrote:
> Previous series have already converted some block drivers to byte-based rather
> than sector-based interfaces. However, the common I/O path as well as
> raw-posix
> still enforced a minimum alignment of 512 bytes because some sector-based
> logic
> was involved.
>
> This patch series removes these limitations and a sub-sector request actually
> ends up as a sub-sector syscall now.
>
> v2:
> - Updated trace-events for bdrv_co_do_copy_on_readv() [Eric]
> - Added some assertions [Eric]
> - Renamed laio_submit_co() -> laio_co_submit() and added coroutine_fn
> to its prototype [Stefan]
> - linux-aio: Include block/block.h and use BDRV_SECTOR_SIZE instead
> of 512 [Eric]
>
> Kevin Wolf (6):
> block: Byte-based bdrv_co_do_copy_on_readv()
> block: Prepare bdrv_aligned_preadv() for byte-aligned requests
> block: Prepare bdrv_aligned_pwritev() for byte-aligned requests
> raw-posix: Switch to bdrv_co_* interfaces
> raw-posix: Implement .bdrv_co_preadv/pwritev
> block: Don't enforce 512 byte minimum alignment
>
> block.c | 2 +-
> block/io.c | 128
> ++++++++++++++++++++++++++------------------------
> block/linux-aio.c | 84 ++++++++++++++++++++++++---------
> block/mirror.c | 10 ++--
> block/raw-aio.h | 3 ++
> block/raw-posix.c | 62 ++++++++++++------------
> include/block/block.h | 10 ++--
> trace-events | 2 +-
> 8 files changed, 176 insertions(+), 125 deletions(-)
>
> --
> 1.8.3.1
>
Reviewed-by: Stefan Hajnoczi <address@hidden>
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- [Qemu-devel] [PATCH v2 0/6] block: Enable byte granularity I/O, Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 6/6] block: Don't enforce 512 byte minimum alignment, Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 1/6] block: Byte-based bdrv_co_do_copy_on_readv(), Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 5/6] raw-posix: Implement .bdrv_co_preadv/pwritev, Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 3/6] block: Prepare bdrv_aligned_pwritev() for byte-aligned requests, Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 4/6] raw-posix: Switch to bdrv_co_* interfaces, Kevin Wolf, 2016/06/14
- [Qemu-devel] [PATCH v2 2/6] block: Prepare bdrv_aligned_preadv() for byte-aligned requests, Kevin Wolf, 2016/06/14
- Re: [Qemu-devel] [PATCH v2 0/6] block: Enable byte granularity I/O,
Stefan Hajnoczi <=