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Re: [Qemu-devel] [PATCH for-2.1? 0/2] thread-pool: avoid fd usage and fi
From: |
Christian Borntraeger |
Subject: |
Re: [Qemu-devel] [PATCH for-2.1? 0/2] thread-pool: avoid fd usage and fix nested aio_poll() deadlock |
Date: |
Fri, 11 Jul 2014 13:37:59 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
On 11/07/14 13:20, Stefan Hajnoczi wrote:
> These patches convert thread-pool.c from EventNotifier to QEMUBH. They then
> solve the deadlock when nested aio_poll() calls are made.
>
> Please speak out whether you want this in QEMU 2.1 or not. I'm not aware of
> the nested aio_poll() deadlock ever having been reported, so maybe we can
> defer
> to QEMU 2.2.
>
> Stefan Hajnoczi (2):
> thread-pool: avoid per-thread-pool EventNotifier
> thread-pool: avoid deadlock in nested aio_poll() calls
>
> thread-pool.c | 44 +++++++++++++++++++++++++++++++-------------
> 1 file changed, 31 insertions(+), 13 deletions(-)
>
Seems to work ok and saves an fd. I think its still better scheduled for 2.2
Christian