linux-kernel - Re: [PATCH 0/2] Add cond_resched() in some place to avoid softlockup

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Message-ID: <aYRzWiwIWtpSm_4z@dread.disaster.area>
Date: Thu, 5 Feb 2026 21:39:22 +1100
From: Dave Chinner <david@...morbit.com>
To: alexjlzheng@...il.com
Cc: cem@...nel.org, linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jinliang Zheng <alexjlzheng@...cent.com>
Subject: Re: [PATCH 0/2] Add cond_resched() in some place to avoid softlockup

On Thu, Feb 05, 2026 at 04:26:19PM +0800, alexjlzheng@...il.com wrote:
> From: Jinliang Zheng <alexjlzheng@...cent.com>
> 
> We recently observed several XFS-related softlockups in non-preempt
> kernels during stability testing, and we believe adding a few
> cond_resched()calls would be beneficial.

I as under the impression that there was a general kernel-wide NAK
in place for adding new cond_resched() points to hack around
the CONFIG_PREEMPT_NONE problems once CONFIG_PREEMPT_LAZY was
introduced...

https://lore.kernel.org/lkml/87jzshhexi.ffs@tglx/

-Dave.
-- 
Dave Chinner
david@...morbit.com