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b=wSLTv9O+PtzDoICJq3wXd9IZimlNLA9NkvH3JEF++r5Tr6Bx5Qd11jreFlitCFR9y Wredzfa/xj5ZBNJF+fDCAIDJE9/h5+zcQ9BzFkgHBwl53TqWF+2b6qyZJV99uCC9n+ qgnOa3FI9kfjeHWmbdKgqFPm/UOBDmJZNIG8ADHw= Date: Tue, 19 Aug 2025 15:59:13 -0700 From: Andrew Morton To: David Hildenbrand Cc: jane.chu@oracle.com, lirongqing , muchun.song@linux.dev, osalvador@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH][v2] mm/hugetlb: early exit from hugetlb_pages_alloc_boot() when max_huge_pages=0 Message-Id: <20250819155913.93e549fc5bd728c2f9ddacf4@linux-foundation.org> In-Reply-To: References: <20250814102333.4428-1-lirongqing@baidu.com> <08cc4405-948a-446e-b198-5745c32f9ee1@oracle.com> <20250817195945.a845d2f5c045e4f60b07469f@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 152BB140008 X-Stat-Signature: rjfi9d1361wfjia6uw9ddz7a18dm5e87 X-Rspam-User: X-HE-Tag: 1755644354-978508 X-HE-Meta: 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 AzilllL2 /U27HOAUr55kOTHyxAUY9bcWw+3K2xP66ndN3l6TScWaiv88wvtb1geF5SDnT+3vH7yGuJEXxogtMFJ+QNjh08pNpAcS0z+RTzDRePmL7oA2k57h1cIdycmfCaCt+h2+kZBgASqNPBh+me9T3jT0Ax8yIi0a2I4r46A9DI2TC3kiGyViUrky53WymSoKHhNxF447IqcNL+3tGYFHkbWOPCTU39mzwpTQxt4Fou1kKahbcj2c0gnqR6S8BL5YZRBswa3S1VsBgF9C7/omzOmDX0NIxxJE+z3rkjvXROJ9FFbH5gd5gJoBhV65nlgFO6mHa05DZ 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 Mon, 18 Aug 2025 09:46:59 +0200 David Hildenbrand wrote: > >>> if (hugetlb_hstate_alloc_pages_specific_nodes(h)) > >>> return; > >> > >> Looks good. Could you add stable: ? > > Can you elaborate why you think this is stable material? > To prevent the > [ 3.702280] HugeTLB: allocation took 0ms with hugepage_allocation_threads=32 message when hugetlb pages are disabled. Yeah, I guess it isn't very important. I'll destabilize the patch.