linux-kernel - Re: [PATCH 1/2] completion: move blk_wait

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Date: Thu, 25 Apr 2024 23:06:47 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Christoph Hellwig <hch@...radead.org>,
	Mikulas Patocka <mpatocka@...hat.com>,
	Mike Snitzer <msnitzer@...hat.com>, Jens Axboe <axboe@...nel.dk>,
	Damien Le Moal <dlemoal@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>,
	Guangwu Zhang <guazhang@...hat.com>, dm-devel@...ts.linux.dev,
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] completion: move blk_wait_io to
 kernel/sched/completion.c

On Mon, Apr 22, 2024 at 12:59:56PM +0200, Peter Zijlstra wrote:
> A bit like TASK_NOLOAD (which is used to make TASK_IDLE work), but
> different I suppose.
> 
> TASK_NOHUNG would be trivial to add ofc. But is it worth it?

Yes.  And it would allow us to kill the horrible existing block hack.