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[Qemu-devel] [RFC PATCH v2 0/6] linux-aio: Convert to coroutines
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [RFC PATCH v2 0/6] linux-aio: Convert to coroutines |
Date: |
Fri, 5 Dec 2014 17:06:02 +0100 |
This is my current branch for converting the linux-aio interface to
coroutines. I started this as a performance optimisation, but I think it
also makes it much easier to avoid the recursive coroutine reentrace
that Ming Lei has sent a relatively complex callback-based patch for.
See patch 3 for a quick attempt on fixing the same problem in a
coroutine-based linux-aio implementation.
Not ready to be merged mainly because of incomplete testing and
benchmarking.
v2:
- Added patches 4-6 for handling of -EAGAIN and partial submits so that
Ming Lei has a comparison to all of his callback-based series
Kevin Wolf (6):
qemu-img bench
raw-posix: Convert Linux AIO submission to coroutines
linux-aio: Don't reenter request coroutine recursively
linux-aio: Support partial io_submits
linux-aio: On -EAGAIN, wait for completions
linux-aio: Queue requests instead of returning -EAGAIN
block/linux-aio.c | 159 +++++++++++++++++++++++++++----------------------
block/raw-aio.h | 5 +-
block/raw-posix.c | 62 +++++++++----------
qemu-img-cmds.hx | 6 ++
qemu-img.c | 174 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-img.texi | 10 ++++
6 files changed, 309 insertions(+), 107 deletions(-)
--
1.8.3.1
- [Qemu-devel] [RFC PATCH v2 0/6] linux-aio: Convert to coroutines,
Kevin Wolf <=
- [Qemu-devel] [RFC PATCH v2 2/6] raw-posix: Convert Linux AIO submission to coroutines, Kevin Wolf, 2014/12/05
- [Qemu-devel] [RFC PATCH v2 1/6] qemu-img bench, Kevin Wolf, 2014/12/05
- [Qemu-devel] [RFC PATCH v2 3/6] linux-aio: Don't reenter request coroutine recursively, Kevin Wolf, 2014/12/05
- [Qemu-devel] [RFC PATCH v2 4/6] linux-aio: Support partial io_submits, Kevin Wolf, 2014/12/05
- [Qemu-devel] [RFC PATCH v2 5/6] linux-aio: On -EAGAIN, wait for completions, Kevin Wolf, 2014/12/05
- [Qemu-devel] [RFC PATCH v2 6/6] linux-aio: Queue requests instead of returning -EAGAIN, Kevin Wolf, 2014/12/05