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[49.180.164.75]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-354890960a0sm2556503a91.4.2026.02.05.02.39.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Feb 2026 02:39:32 -0800 (PST) Received: from dave by dread.disaster.area with local (Exim 4.99.1) (envelope-from ) id 1vnwle-0000000DCmY-4AC3; Thu, 05 Feb 2026 21:39:23 +1100 Date: Thu, 5 Feb 2026 21:39:22 +1100 From: Dave Chinner To: alexjlzheng@gmail.com Cc: cem@kernel.org, linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org, Jinliang Zheng Subject: Re: [PATCH 0/2] Add cond_resched() in some place to avoid softlockup Message-ID: References: <20260205082621.2259895-1-alexjlzheng@tencent.com> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260205082621.2259895-1-alexjlzheng@tencent.com> On Thu, Feb 05, 2026 at 04:26:19PM +0800, alexjlzheng@gmail.com wrote: > From: Jinliang Zheng > > 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@fromorbit.com