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Re: [Qemu-devel] [RFC][PATCH 0/9] Use coroutines in the block layer
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [RFC][PATCH 0/9] Use coroutines in the block layer |
Date: |
Mon, 1 Aug 2011 10:44:01 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Jul 15, 2011 at 06:47:30PM +0200, Kevin Wolf wrote:
> Based on Stefan's latest coroutine patches. This series makes qcow and qcow2
> take advantage of the new coroutine infrastructure. Both formats used
> synchronous operations for accessing their metadata and blocked the guest CPU
> during that time. With coroutines, the I/O will happen asynchronously in the
> background and the CPU won't be blocked any more.
>
> Kevin Wolf (9):
> block: Add bdrv_co_readv/writev
> block: Emulate AIO functions with bdrv_co_readv/writev
> block: Add bdrv_co_readv/writev emulation
> coroutines: Locks
> qcow2: Use coroutines
> qcow: Use coroutines
> async: Remove AsyncContext
> coroutines: Use one global bottom half for CoQueue
> block: Use bdrv_co_* instead of synchronous versions in coroutines
>
> Makefile.objs | 4 +-
> async.c | 98 ++-----------------
> block.c | 271 ++++++++++++++++++++++++++++++++++++++++++++++--
> block.h | 5 +
> block/qcow.c | 180 +++++++++++---------------------
> block/qcow2-cluster.c | 26 ++---
> block/qcow2.c | 240 ++++++++++++++++----------------------------
> block/qcow2.h | 5 +-
> block/qed-table.c | 14 ---
> block/qed.c | 4 -
> block_int.h | 6 +
> linux-aio.c | 24 +----
> posix-aio-compat.c | 11 --
> qemu-common.h | 4 -
> qemu-coroutine-int.h | 1 +
> qemu-coroutine-lock.c | 117 +++++++++++++++++++++
> qemu-coroutine.h | 62 +++++++++++
> trace-events | 11 ++
> 18 files changed, 636 insertions(+), 447 deletions(-)
> create mode 100644 qemu-coroutine-lock.c
>
> --
> 1.7.6
Reviewed-by: Stefan Hajnoczi <address@hidden>
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