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[109.81.16.145]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48a81b99127sm70429935e9.0.2026.04.30.08.32.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Apr 2026 08:32:41 -0700 (PDT) Date: Thu, 30 Apr 2026 17:32:40 +0200 From: Michal Hocko To: Andrew Morton Cc: Minchan Kim , hca@linux.ibm.com, linux-s390@vger.kernel.org, david@kernel.org, brauner@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, surenb@google.com, timmurray@google.com Subject: Re: [PATCH v2] mm: process_mrelease: introduce PROCESS_MRELEASE_REAP_KILL flag Message-ID: References: <20260429211359.3829683-1-minchan@kernel.org> <20260430074305.9d3389ed71af040acfe222de@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260430074305.9d3389ed71af040acfe222de@linux-foundation.org> X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 9336120014 X-Rspam-User: X-Stat-Signature: rbschyohkmt3b179cu4zrp488i4w9cph X-HE-Tag: 1777563163-150701 X-HE-Meta: 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 n+biRbUy GVwEdnatc04Unf2C5F3XAdVvac25P4BI8V/tLUMoJSf0t1eK/rackjoFqdx0rToxAmv8XIbfO8jCHsyXzaJhyQrDS0AZI7L6NYL7/QwSZLsaFKBHXOGz1/xnx4OeYJcO5i9GmXExjejQ7SrWbzVeENb8k0ryZVtdThOgWp+XAkjxJEuFlVRhG847U0FPyjPifgJsS1gWgRI6Xw2UlO1CMI/dQJuGRFL0NlTWIjwnNIBzATHRFUjGLk7w0dBkxryNBXfYf+k42f8BHRf6GQ2U3RgYZmNo82DLra5IFC/0PW/uhOoCiaN8fctBjwm5L1Jn/JY1eA+UWcnWEUHjswU/JrWkrDgwPJa82vGsRX9F5MshIq1p35JiqDEwIw3+J3zQg/czQoi2XN7QHfmQrZlQy9ujK5Q+92NP70ghmpxybInY3YO8= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu 30-04-26 07:43:05, Andrew Morton wrote: > On Wed, 29 Apr 2026 14:13:59 -0700 Minchan Kim wrote: > > > Currently, process_mrelease() requires userspace to send a SIGKILL signal > > prior to invocation. This separation introduces a scheduling race window > > where the victim task may receive the signal and enter the exit path > > before the reaper can invoke process_mrelease(). > > Does process_mrelease() have a manpage? My googling was a fail. It does. Very well hidden in 884a7e5964e06 -- Michal Hocko SUSE Labs