From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794600358; b=0DG5msoce1oV7inrkTJEgp50kcvX9ZfgqEm+WrivixuMHtP7e0X4M6A6iwBL4f0GhVA9 G7w3YlO7EkgPT4Hd6BN1HIKaPoQ4qIeSLRENmK2SRwP4VSWECmmkHjLXLWvKqgHbEB+WR Fp5h+DakJrktw+cYHKQDRs14wjmkqapTa272C4s08W7+SQlTAO5VT0FbEMkYZdXgRqBr1 t5bruyKwSrMnXbV8P+Xon5uI0msSMyzJ191+4Be0hErLpA0/UhSqDkjAU9bnjBJQTHhkZ 5jiiAEszxjBGBtX8znfHVznpbxiUjQN87YYKrvdldVWlMzMgu1Iy+CQODNJgm+ROOXg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794600358; h=Received:DKIM-Signature:Date:To:From:Subject:Message-Id; bh=L6KHFQTZLEASylfXBeJ8lH8DORdi9H2fwbd9RMfi7nY=; b=fk9BD9lilDmB+waeF+hMSefqvOZ+IVRUkFYNNpCAHyvqkq7+bw5uDETi7YVAOlun4uIA l39bNrgUmNz+9gUk6YBkmunU7eTK3YZ677MJCuS+6IdAi8EjFbZoFgAEzMrwlcnyPicLY Tn47QOOrkDHiSDxhpKYp63//qzBA+i+F/kFZM2t8EC0nT+7axxV5J4IgWEhbVW+cDbsiz HEjyA4XXppph0tiQL7ThsXBQWAfvuKMOlNHrdgvUbTWFaq2o0UHHc0W3MslX/42x8umlH SOfcR8YKKQQzI11lwzj4N10YE6GfPS0Rc+P55O6XBVjvWgYKELgFFg7JHPhNkFrOGVA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linux-foundation.org header.i=@linux-foundation.org header.a=rsa-sha256 header.s=korg header.b=gb8eFB4f; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F665606A333 for ; Fri, 13 Nov 2026 20:05:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.a=rsa-sha256 header.s=korg header.b=gb8eFB4f Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16B301F000C4; Fri, 13 Nov 2026 20:05:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1794600358; bh=L6KHFQTZLEASylfXBeJ8lH8DORdi9H2fwbd9RMfi7nY=; h=Date:To:From:Subject; b=gb8eFB4fAJ4LQrM3wMyUxb1gCWQgw/3thPAibZgMbK/6mshdKGuEoCuE0gEcqRqoQ S2sqQ6QdgzZTnZMxmG9BzPWxYVwIn7LbuFT3JVW981f/6Q4z3i4Bi5it30aVzqJfrR YPtVv3ai1gq9WyA6yHXu8Kc3m/OXEeVaFW9SCpFo= Date: Fri, 13 Nov 2026 12:05:57 -0800 To: mm-commits@vger.kernel.org,baohua@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-mglru-make-swappiness=1-file-reclaim-more-aggressive.patch added to mm-new branch Message-Id: <20261113200558.16B301F000C4@smtp.kernel.org> X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list The patch titled Subject: mm/mglru: make swappiness=1 file reclaim more aggressive has been added to the -mm mm-new branch. Its filename is mm-mglru-make-swappiness=1-file-reclaim-more-aggressive.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mglru-make-swappiness=1-file-reclaim-more-aggressive.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: "Barry Song (Xiaomi)" Subject: mm/mglru: make swappiness=1 file reclaim more aggressive Date: Sat, 14 Nov 2026 02:55:40 +0800 In MGLRU, swappiness=200 favors anon reclaim, while swappiness=1 favors file reclaim. Swappiness=0 allows only file reclaim, while swappiness=201 allows only anon reclaim. Thus, swappiness=1 and swappiness=200 are counterparts for file and anon reclaim, respectively. Before this patchset, get_type_to_scan() always returned LRU_GEN_ANON for swappiness=200 and LRU_GEN_FILE for swappiness=1. For swappiness=200, file_factor is set to 0 at higher reclaim priorities. Similarly, for swappiness=1, anon_factor is set to 0 at higher reclaim priorities. This makes the two settings behave similarly, although the thresholds differ slightly based on testing. This allows file pages to be reclaimed more aggressively and benefits workloads that prioritize file reclaim by using swappiness=1. Link: https://lore.kernel.org/20261113185541.70203-16-baohua@kernel.org Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Andrew Morton Cc: Axel Rasmussen Cc: Baolin Wang Cc: Baoquan He Cc: Johannes Weiner Cc: Cc: Kairui Song Cc: Kunwu Chan Cc: Liam R. Howlett Cc: wang lian Cc: Cc: Cc: Michal Hocko Cc: Qi Zheng Cc: Ridong Chen Cc: Mike Rapoport Cc: Shakeel Butt Cc: Suren Baghdasaryan Cc: wangzicheng Cc: Wei Xu Cc: Yuanchu Xie Cc: Bo Zhang Cc: Hui Zhu Cc: Siddharth Chintamaneni Cc: Bo Zhang --- mm/vmscan.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/mm/vmscan.c~mm-mglru-make-swappiness=1-file-reclaim-more-aggressive +++ a/mm/vmscan.c @@ -4956,7 +4956,11 @@ static void lru_gen_balance_scan(struct anon_weight = nr[LRU_GEN_ANON] + nr[LRU_GEN_FILE] / size_bias; file_weight = nr[LRU_GEN_FILE] + nr[LRU_GEN_ANON] / size_bias; - anon_factor = (u64)swappiness * refault_rate[LRU_GEN_FILE] * anon_weight; + if (swappiness == MIN_SWAPPINESS + 1) + anon_factor = sc->priority <= DEF_PRIORITY / 2 ? + refault_rate[LRU_GEN_FILE] * anon_weight : 0; + else + anon_factor = (u64)swappiness * refault_rate[LRU_GEN_FILE] * anon_weight; if (swappiness == MAX_SWAPPINESS) file_factor = sc->priority < DEF_PRIORITY / 2 ? refault_rate[LRU_GEN_ANON] * file_weight : 0; _ Patches currently in -mm which might be from baohua@kernel.org are arm64-vmalloc-allow-arch_vmap_pte_range_map_size-to-batch-multiple-cont_pte.patch mm-vmalloc-extend-page-table-walk-to-support-larger-page_shift-sizes-and-eliminate-page-table-rewalk.patch mm-vmalloc-map-contiguous-pages-in-batches-for-vmap-if-possible.patch mm-vmalloc-align-vm_area-so-vmap-can-batch-mappings.patch mm-mglru-avoid-placing-rejected-folios-below-populated-gen.patch mm-mglru-run-aging-when-one-type-has-no-populatable-folios.patch mm-mglru-restrict-eviction-accounting-to-eligible-zones.patch mm-mglru-reduce-lru-lock-contention-by-shrinking-folio-batches-in-inc_min_seq.patch mm-mglru-make-swappiness=1-file-reclaim-more-aggressive.patch