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[109.81.30.108]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1bd69b2a2sm20612325e9.4.2026.10.15.00.04.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Oct 2026 00:04:33 -0700 (PDT) Date: Thu, 15 Oct 2026 09:03:57 +0200 From: Michal Hocko To: Alexis Bouzigues Cc: "akpm@linux-foundation.org" , "liam@infradead.org" , "ljs@kernel.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] mm: nommu: set MMF_OOM_SKIP in exit_mmap() Message-ID: References: <20261013-fix-nommu-exit-mmap-oom-skip-v1-1-cb957cdbfcc3@JohnDeere.com> 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 Wed 14-10-26 21:58:52, Alexis Bouzigues wrote: > On Wed, Oct 14, 2026 at 09:50:30AM +0200, Michal Hocko wrote: > > > Set MMF_OOM_SKIP in the NOMMU exit_mmap() once the VMAs are freed, as > > > the MMU version does. > > Is this a real problem that you can actually hit? > > Yes, without this change the oom killer can fail to make progress to > resolve a global oom. Are you really looking into the code or just relying on an LLM? Go and check to learn that the oom reaper is only compiled in with CONFIG_MMU=y -- Michal Hocko SUSE Labs