[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 14/14] test-bdrv-drain: Test nested poll in bdrv
|
From: |
Fam Zheng |
|
Subject: |
Re: [Qemu-devel] [PATCH 14/14] test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level() |
|
Date: |
Tue, 11 Sep 2018 16:37:30 +0800 |
|
User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Fri, 09/07 18:15, Kevin Wolf wrote:
> This is a regression test for a deadlock that could occur in callbacks
> called from the aio_poll() in bdrv_drain_poll_top_level(). The
> AioContext lock wasn't released and therefore would be taken a second
> time in the callback. This would cause a possible AIO_WAIT_WHILE() in
> the callback to hang.
>
> Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
- Re: [Qemu-devel] [PATCH 08/14] block-backend: Add .drained_poll callback, (continued)
- [Qemu-devel] [PATCH 10/14] block-backend: Decrease in_flight only after callback, Kevin Wolf, 2018/09/07
- [Qemu-devel] [PATCH 13/14] block: Remove aio_poll() in bdrv_drain_poll variants, Kevin Wolf, 2018/09/07
- [Qemu-devel] [PATCH 09/14] block-backend: Fix potential double blk_delete(), Kevin Wolf, 2018/09/07
- [Qemu-devel] [PATCH 12/14] blockjob: Lie better in child_job_drained_poll(), Kevin Wolf, 2018/09/07
- [Qemu-devel] [PATCH 14/14] test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level(), Kevin Wolf, 2018/09/07
- Re: [Qemu-devel] [PATCH 14/14] test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level(),
Fam Zheng <=