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bh=sPsZZeB7DGQldN6iG3Vx6k5qI8fxoARth9f1NUHSsSI=; b=iBz4Rpi9WxTcQAgz21mRaJiXzGL0/voS7kE5lCyKIjSMewsaO/3ERnZxXIW82FckHBL1U/ 6bwe3ZiWDSa4u4KShETl99Jo2mhrHLHIPz1d8IOUGULcW009YpmeVAHe51C40XxRm+0Y8e p61sz3v271nRvXg8vD0GHdS/nun0rXYTev7bM/iyi3BbBqCK7LtQLntxgx4gNj8tTaiib3 Y8cbNxj1XEmYmjulAd9klpfoZPjo8M7HJTudFf96eFNPTFIIQyMe8LJkwABeJ2OE3lSSH8 xxHzXvSRhRt731NLqmY2sOK5/SyeeqkyHf3wxqyOlQ0z5LVAG2lOP6OjJQAMyw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1755120353; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=sPsZZeB7DGQldN6iG3Vx6k5qI8fxoARth9f1NUHSsSI=; b=FkoYUBMOpck4thkYzrkH4Wn7bCKCkLVeeTC4Jc07kZMkjCMQCzbH85q3pzneGDLR2PhfLq Mig88eUXbmL7fsBg== To: Shakeel Butt Cc: linux-mm@kvack.org, LKML , Peter Zijlstra , Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , cgroups@vger.kernel.org, Andrew Morton Subject: Re: [PATCH] memcg: Optimize exit to user space In-Reply-To: References: <87tt2b6zgs.ffs@tglx> Date: Wed, 13 Aug 2025 23:25:52 +0200 Message-ID: <87h5ya7w2n.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 7BCB7A000E X-Stat-Signature: 3bt9836qfgygdwbcmszgtofxm3bkj6mn X-HE-Tag: 1755120356-336272 X-HE-Meta: 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 Rvq6KxEu w0mfT3vW+/Zgopi5gU+YvDorT+OKOBNjI8FMrz+SJRfcqh/qVOAn5gPlq8Ak5P6fORfbzUCE88WfTWU29ilICTr3ernuzVQ/PoRwNOOADgdGLDOEkkv4ZaUhvUIzGYs/NSHHYHVKNLD8FwsJkRbbHVKe3zH47HzYy4xeeEUKbjcS83ZGvzPzLb/1tn7J9qcO1tEbpVyt1KZoerrxodrdTomaXu3C/sMdhGcHf X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Aug 13 2025 at 10:19, Shakeel Butt wrote: > On Wed, Aug 13, 2025 at 04:57:55PM +0200, Thomas Gleixner wrote: > Since this is seen in profiling data and it is simple enough, I think it > is worth backporting to stable trees as well. Your call. > In the followup cleanup, we can remove the (!nr_pages) check inside > __mem_cgroup_handle_over_high() as well. Yes. I did not want to do that in one go, but that's an obvious follow up. Thanks, tglx