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Thu, 26 Feb 2026 08:21:26 -0800 (PST) From: Mikhail Gavrilov To: harry.yoo@oracle.com Cc: chris.bainbridge@gmail.com, vbabka@suse.cz, surenb@google.com, dsterba@suse.cz, hao.li@linux.dev, leitao@debian.org, Liam.Howlett@oracle.com, zhao1.liu@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-btrfs@vger.kernel.org, regressions@lists.linux.dev, Mikhail Gavrilov Subject: Re: [REGRESSION] kswapd0: page allocation failure (bisected to "slab: add sheaves to most caches") Date: Thu, 26 Feb 2026 21:20:52 +0500 Message-ID: <20260226162052.36121-1-mikhail.v.gavrilov@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: m9wrw1azf5g3djjsetggk1ygx9jszmsd X-Rspamd-Server: rspam11 X-Rspam-User: X-Rspamd-Queue-Id: 23A0FA000A X-HE-Tag: 1772122892-278460 X-HE-Meta: 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 m9zx2KM0 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Feb 25, 2026, Harry Yoo wrote: > Slab fix is submitted here, please feel free to test: > > https://lore.kernel.org/linux-mm/20260223133322.16705-1-harry.yoo@oracle.com No page allocation failures after 33 hours of uptime under normal desktop workload with memory pressure (64GB RAM, btrfs + zram swap, Chrome with many tabs, AMD GPU). Previously without this patch, I was seeing failures from both kswapd0/btrfs and chrome/amdgpu callers within 10 hours. Kernel: 7.0.0-rc1 (commit 7dff99b35460 + this patch) Hardware: ASUS ROG STRIX B650E-I, AMD Ryzen, 64GB RAM Tested-by: Mikhail Gavrilov