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[109.81.19.73]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429898acc63sm7914006f8f.27.2025.10.24.00.38.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Oct 2025 00:38:55 -0700 (PDT) Date: Fri, 24 Oct 2025 09:38:53 +0200 From: Michal Hocko To: Dmitry Ilvokhin Cc: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Hugh Dickins , Baolin Wang , Kiryl Shutsemau , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com Subject: Re: [PATCH] mm: shmem/tmpfs hugepage defaults config choice Message-ID: References: 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 Thu 23-10-25 18:12:02, Dmitry Ilvokhin wrote: > Allow to override defaults for shemem and tmpfs at config time. This is > consistent with how transparent hugepages can be configured. > > Same results can be achieved with the existing > 'transparent_hugepage_shmem' and 'transparent_hugepage_tmpfs' settings > in the kernel command line, but it is more convenient to define basic > settings at config time instead of changing kernel command line later. Being consistent is usually nice but you are not telling us _who_ is going to benefit from this. Increasing the config space is not really free. So please focus on Why do we need it rather than it is consistent argument. -- Michal Hocko SUSE Labs