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Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rsim7-0000000ATLX-4A0f; Fri, 05 Apr 2024 12:34:32 +0000 Date: Fri, 5 Apr 2024 13:34:31 +0100 From: Matthew Wilcox To: Frits Hoogland Cc: linux-mm@kvack.org Subject: Re: Linux choosing to swap despite having 250G of file memory available Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: E72C41C0008 X-Stat-Signature: xhhp5411c1fbgbmuuis11ga61t3hwbss X-HE-Tag: 1712320473-284651 X-HE-Meta: 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 cvG7x68c B3TNN1Yxvk1+iZHTk+Fd1I+FS+CIRCtDGnG7IdSuCDML+7L2hJi+EoFF6SeCQ3SmeTAK5+jZ1LihojJWrXvL1d9SFzpQdtRN6APhLrVTjD8yYvQj8UdsdfOYKjUkA1RMyrxn+GL0N66Ck81e5q8Gs3DFEW3Lnck68FafQ X-Bogosity: Ham, tests=bogofilter, spamicity=0.004834, 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 Fri, Apr 05, 2024 at 11:04:49AM +0200, Frits Hoogland wrote: > Operating system: Red Hat Enterprise Linux 8.9 > Kernel: 4.18.0-513.5.1.el8_9.x86_64 #1 SMP 4.18 was released in 2018. I know Red Hat still supports it, but really that's up to them. You need to engage with Red Hat product support, not upstream. We don't know what changes Red Hat have made to it that may influence swapping behaviour.