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Re: [Qemu-block] [PATCH 10/14] block-backend: Decrease in_flight only af
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From: |
Fam Zheng |
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Subject: |
Re: [Qemu-block] [PATCH 10/14] block-backend: Decrease in_flight only after callback |
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Date: |
Tue, 11 Sep 2018 16:29:15 +0800 |
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User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Fri, 09/07 18:15, Kevin Wolf wrote:
> Request callbacks can do pretty much anything, including operations that
> will yield from the coroutine (such as draining the backend). In that
> case, a decreased in_flight would be visible to other code and could
> lead to a drain completing while the callback hasn't actually completed
> yet.
>
> Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
- Re: [Qemu-block] [PATCH 06/14] block: Add missing locking in bdrv_co_drain_bh_cb(), (continued)
[Qemu-block] [PATCH 08/14] block-backend: Add .drained_poll callback, Kevin Wolf, 2018/09/07
[Qemu-block] [PATCH 09/14] block-backend: Fix potential double blk_delete(), Kevin Wolf, 2018/09/07
[Qemu-block] [PATCH 12/14] blockjob: Lie better in child_job_drained_poll(), Kevin Wolf, 2018/09/07
[Qemu-block] [PATCH 10/14] block-backend: Decrease in_flight only after callback, Kevin Wolf, 2018/09/07
- Re: [Qemu-block] [PATCH 10/14] block-backend: Decrease in_flight only after callback,
Fam Zheng <=
[Qemu-block] [PATCH 11/14] mirror: Fix potential use-after-free in active commit, Kevin Wolf, 2018/09/07
[Qemu-block] [PATCH 13/14] block: Remove aio_poll() in bdrv_drain_poll variants, Kevin Wolf, 2018/09/07
[Qemu-block] [PATCH 14/14] test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level(), Kevin Wolf, 2018/09/07