[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 01/14] blockjob: Wake up BDS when job becomes id

From: Fam Zheng
Subject: Re: [Qemu-devel] [PATCH 01/14] blockjob: Wake up BDS when job becomes idle
Date: Tue, 11 Sep 2018 15:58:54 +0800
User-agent: Mutt/1.10.1 (2018-07-13)

On Fri, 09/07 18:15, Kevin Wolf wrote:
> In the context of draining a BDS, the .drained_poll callback of block
> jobs is called. If this returns true (i.e. there is still some activity
> pending), the drain operation may call aio_poll() with blocking=true to
> wait for completion.
> As soon as the pending activity is completed and the job finally arrives
> in a quiescent state (i.e. its coroutine either yields with busy=false
> or terminates), the block job must notify the aio_poll() loop to wake
> up, otherwise we get a deadlock if both are running in different
> threads.
> Signed-off-by: Kevin Wolf <address@hidden>

Reviewed-by: Fam Zheng <address@hidden>

reply via email to

[Prev in Thread] Current Thread [Next in Thread]