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Thu, 12 Nov 2026 09:42:16 +0000 From: Salvatore Dipietro To: CC: , Andrew Morton , Vlastimil Babka , Johannes Weiner , Subject: [STABLE 7.3.y] 0e05a469c294 ("mm/page_alloc: avoid direct reclaim and compaction for costly __GFP_NORETRY allocations") Date: Thu, 12 Nov 2026 09:42:05 +0000 Message-ID: <20261112094205.994560-1-dipiets@amazon.it> X-Mailer: git-send-email 2.50.1 X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-ClientProxiedBy: EX19D031UWC002.ant.amazon.com (10.13.139.212) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi, Please apply to 7.3.y: 0e05a469c294 ("mm/page_alloc: avoid direct reclaim and compaction for costly __GFP_NORETRY allocations") It fixes a regression from 5d8edfb900d5 ("iomap: Copy larger chunks from userspace"), in since v6.6: PostgreSQL pgbench on XFS runs at 0.38x throughput. Andrew and Vlastimil agreed to restore its Cc: stable [1], but it was merged without the tag. It depends on 6ee3d87b9408 and fe21f930d1e6, already queued for 7.3. I'll send backports for 6.18.y, 6.12.y and 6.6.y separately. [1] https://lore.kernel.org/all/1fc0caa5-43b1-487f-94cf-0d1aff4c03fd@kernel.org/ Thanks, Salvatore AMAZON DEVELOPMENT CENTER ITALY SRL, viale Monte Grappa 3/5, 20124 Milano, Italia, Registro delle Imprese di Milano Monza Brianza Lodi REA n. 2504859, Capitale Sociale: 10.000 EUR i.v., Cod. Fisc. e P.IVA 10100050961, Societa con Socio Unico