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[109.81.85.133]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490b0e0de7bsm1097895e9.3.2026.06.01.08.45.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jun 2026 08:45:20 -0700 (PDT) Date: Mon, 1 Jun 2026 17:45:19 +0200 From: Michal Hocko To: Kaitao Cheng Cc: Dennis Zhou , Pedro Falcato , akpm@linux-foundation.org, tj@kernel.org, cl@gentwo.org, vbabka@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, muchun.song@linux.dev, Kaitao Cheng Subject: Re: [PATCH 1/2] mm/percpu: Preserve NOFS/NOIO scope during chunk create and populate Message-ID: References: <20260528132917.81123-1-kaitao.cheng@linux.dev> <20260528132917.81123-2-kaitao.cheng@linux.dev> <5a4aa532-77a0-436a-8f5e-1bbcf2db6bbb@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@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: On Mon 01-06-26 10:27:53, Kaitao Cheng wrote: > However, if we revert 9a5b183941b, it seems that all of these issues would > be resolved. The only downside is that the failure rate of pcpu_alloc_noprof() > allocations may increase, which might be acceptable. That has practical impact on some versions of iscsid which do not have PR_SET_IO_FLUSHER. And maybe some more so I would rather not revert based on a theoretical concerns which I believe is the case here. -- Michal Hocko SUSE Labs