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Re: [Qemu-devel] [PATCH v6] QEMUBH: make AioContext's bh re-entrant
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [PATCH v6] QEMUBH: make AioContext's bh re-entrant |
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Date: |
Thu, 18 Jul 2013 13:08:00 +0800 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jul 16, 2013 at 12:28:58PM +0800, Liu Ping Fan wrote:
> BH will be used outside big lock, so introduce lock to protect
> between the writers, ie, bh's adders and deleter. The lock only
> affects the writers and bh's callback does not take this extra lock.
> Note that for the same AioContext, aio_bh_poll() can not run in
> parallel yet.
>
> Signed-off-by: Liu Ping Fan <address@hidden>
> Reviewed-by: Stefan Hajnoczi <address@hidden>
> ---
> v6:
> destroy ctx->bh_lock in aio_ctx_finalize()
> ---
> async.c | 33 +++++++++++++++++++++++++++++++--
> include/block/aio.h | 7 +++++++
> 2 files changed, 38 insertions(+), 2 deletions(-)
Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block
Stefan