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=1794694267; b=a75ybwBOJWoO6fVbMBzwOEeF7KfeaaeYs/1PBpR4/tZpJA6AlYhE10AxLXOSjklg3SRo uIZnUmBL9T+dWDikuvLaQHlfOL86cn3iMSVHcQVvQF32XMGG8LKZfwUo/D5CpRW1Zfsbj s54AuZDlnXTfYp8+b7ziFYiGOYVLrIXpKLC+n12y2dTppwlFllpC9j6uFxvHC2wne2rzp VUX8C65WXhmj12qcRBfm/zduVyUF7JxWRQwzRPwqFrEJzvK+6H/ma0bbfG7vQsiTJyRtG gHNjUhJ/RN4ROE0vDm94OV9opPqaj6OxaQrKY96hPTTalCB251mt8U3yGcc83erBqIg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794694267; h=Received:DKIM-Signature:Date:To:From:Subject:Message-Id; bh=KvTLQ8j2sYRiajLX0atCTD0gJBk1Ontox/fRAfiQszw=; b=fJKkr4mXWnwlVfqupWfEN+z8ltgVOwS3FwfX4AKHT6obCluqe+nYeje3K2OfIYwQHL43 TZidWj2pKogRHpUHX92+sYZ0bMiNk8+ZrNeoAzBCffSBpLWZLni/qW1ljCKaHKT0LWQBe mtJz2eJBll3vQyIp4ZJUl2jWB5UeRnT+uIyyvblG59LGz1myPr2co/3+XXfX790X1N/6/ qSida6AqkI1GyZgOu1lyF9J97ZhmSMK+VuRgRNlLb9llLKk3o9lzMVy30aglgCf6wcuFs 7CUIghdeD1/G61QvaqDZanmiNq7nxIunmtti/Ed8m7rpudlUurpEj3coWEVrM5mlOWA== 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=ykOMkOGf; 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 0F70C606A331 for ; Sat, 14 Nov 2026 22:11:07 +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=ykOMkOGf Received: by smtp.kernel.org (Postfix) with ESMTPSA id CDA591F000C4; Sat, 14 Nov 2026 22:11:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1794694266; bh=KvTLQ8j2sYRiajLX0atCTD0gJBk1Ontox/fRAfiQszw=; h=Date:To:From:Subject; b=ykOMkOGfk4kJVI4ujRMeneae9DHHJSXoKEU+/7DosgtvC6EoaNW6EHrEvdIq4ssLc wFh6wSU7taztI5AKUAdUx9+PZ1Gh9btYjKWJ4iU0pYqjYuCZlCEpHtSq2LSu73+oFh 1DnLY+axm5BKlyg6FZOvHSMTDAvVXocO3Byslguk= Date: Sat, 14 Nov 2026 14:11:06 -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: <20261114221106.CDA591F000C4@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: Sun, 15 Nov 2026 04:08:02 +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/20261114200803.23129-16-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 @@ -4958,7 +4958,11 @@ 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 <= AGING_PRIORITY ? + 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 < AGING_PRIORITY ? 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-is-drained.patch mm-mglru-run-aging-when-one-type-is-drained-fix.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