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=1794599447; b=GXKJBlYINn/bnOhyLU23iVK+sFuWueQF/xC1V4dpXMSo4JaGwfKm8maL9tja6B76IyGZ kLkhC9I9+zIBxaJU39O1EmlbFXHeqW8yf6gd8RrVwP30dqoy6eSRXsKp2TsKjgP1hzYTW 1QD66mjcrpyIpH7hT0QK7mLxvwzJkjXv6J5a8XQ7uMggROaNtdacezF6SDIQ+kdTR0XZs qV62usot/umfy1kDEwS87WwU13z53wFW0umdqL4bBiW8ugmGS6cUj7eiNQ0KIz3hW8Krb r3EFB/kDbR3XR6Etwb8Id0PdE8Q4sh3Cb8kQHsqtEpTqfJBLoRk9sG9YqDVEsVKMZxw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794599447; h=Received:DKIM-Signature:Date:To:From:Subject:Message-Id; bh=O0boy3b0DaDqU4wW6masnC7ZtzsASU9zSj84OM4jQiE=; b=xtUwhjWEfNKnkRzSoOtl1PbNZ9yInDq3n9+h/qzjon2MjFwfyrSUwSou0yjyJ874McIV V25bNS0DvljQYAbTr8m3MeKDUiaaYiCRSFDvVzTWLutF6G1kXGJlQOQuziil6q4ZVTwcU lcaGYWdomKvAsMaZe5yhBc6ujlAJ7lJ7fffLfzjZHWsb7v33tSWxkUTpqifyylhW6qxU4 JtgXrZhOYoy/RV2SrIpMR1ljZNeM6VkloEs/tTXlEAM/nSkn5gW+1YqrVBrOY0PanvJhu p1I8QzevQm9sQJHYz8wtsAwZ/U/2NLiwIKGk1O+TKpy+CjWT3jjZZ2wDDdmO43HtJxw== 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=JIZVMiBi; 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 9685E606A330 for ; Fri, 13 Nov 2026 19:50:47 +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=JIZVMiBi Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EDA61F000C4; Fri, 13 Nov 2026 19:50:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1794599447; bh=O0boy3b0DaDqU4wW6masnC7ZtzsASU9zSj84OM4jQiE=; h=Date:To:From:Subject; b=JIZVMiBiTKStaUNmZpj3GXYCaxB5F1WAFya4ceX0THdQKo7Otq5Y8yl5rpcyeY9Wy LEplpde3NIydZmDg+BR6KAkvq5GbPWF+GMCEsi1C35rSpVso4OxM6xb+Z4vcWxWjot glJSJ2eu5GLUwR/krRn5CHfBiarRRJyUlklGmIcU= Date: Fri, 13 Nov 2026 11:50:46 -0800 To: mm-commits@vger.kernel.org,kasong@tencent.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-mglru-return-for-unavailable-anon-reclaim-earlier.patch added to mm-new branch Message-Id: <20261113195047.1EDA61F000C4@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: return for unavailable anon reclaim earlier has been added to the -mm mm-new branch. Its filename is mm-mglru-return-for-unavailable-anon-reclaim-earlier.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mglru-return-for-unavailable-anon-reclaim-earlier.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: Kairui Song Subject: mm/mglru: return for unavailable anon reclaim earlier Date: Sat, 14 Nov 2026 02:55:31 +0800 No feature change, just shuffle some code, prepare for later commits. Link: https://lore.kernel.org/20261113185541.70203-7-baohua@kernel.org Signed-off-by: Kairui Song Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Andrew Morton Reviewed-by: Kunwu Chan Cc: Axel Rasmussen Cc: Baolin Wang Cc: Baoquan He Cc: Johannes Weiner Cc: Cc: Liam R. Howlett Cc: wang lian Cc: Cc: Cc: Michal Hocko Cc: Qi Zheng Cc: Ridong Chen Cc: Mike Rapoport Cc: Kairui Song Cc: Shakeel Butt Cc: Suren Baghdasaryan Cc: wangzicheng Cc: Wei Xu Cc: Yuanchu Xie Cc: Bo Zhang Cc: Hui Zhu Cc: Siddharth Chintamaneni Cc: Kunwu Chan Cc: Bo Zhang --- mm/vmscan.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) --- a/mm/vmscan.c~mm-mglru-return-for-unavailable-anon-reclaim-earlier +++ a/mm/vmscan.c @@ -5060,20 +5060,6 @@ static long get_nr_to_scan(struct lruvec struct mem_cgroup *memcg, int swappiness) { unsigned long nr_to_scan, evictable, sizes[ANON_AND_FILE]; - struct pglist_data *pgdat = lruvec_pgdat(lruvec); - - /* - * Proactive reclaim initiated by userspace for anonymous memory only. - * SWAPPINESS_ANON_ONLY is set only on the proactive reclaim path, so - * warn if it shows up elsewhere. When anon cannot be reclaimed (e.g. - * no swap), return 0 to skip the scan entirely, avoiding useless scan - * work when there is nothing eligible to reclaim. - */ - if (swappiness == SWAPPINESS_ANON_ONLY) { - WARN_ON_ONCE(!sc->proactive); - if (!can_reclaim_anon_pages(memcg, pgdat->node_id, sc)) - return 0; - } lruvec_evictable_size(lruvec, swappiness, sizes); evictable = sizes[LRU_GEN_ANON] + sizes[LRU_GEN_FILE]; @@ -5126,6 +5112,19 @@ static bool try_to_shrink_lruvec(struct int swappiness = get_swappiness(lruvec, sc); struct mem_cgroup *memcg = lruvec_memcg(lruvec); + /* + * Proactive reclaim initiated by userspace for anonymous memory only. + * SWAPPINESS_ANON_ONLY is set only on the proactive reclaim path, so + * warn if it shows up elsewhere. When anon cannot be reclaimed (e.g. + * no swap), return 0 to skip the scan entirely, avoiding useless scan + * work when there is nothing eligible to reclaim. + */ + if (swappiness == SWAPPINESS_ANON_ONLY) { + WARN_ON_ONCE(!sc->proactive); + if (!can_reclaim_anon_pages(memcg, lruvec_pgdat(lruvec)->node_id, sc)) + return false; + } + nr_to_scan = get_nr_to_scan(lruvec, sc, memcg, swappiness); while (nr_to_scan > 0) { int delta; _ Patches currently in -mm which might be from kasong@tencent.com are mm-mglru-report-evictable-sizes-per-type.patch mm-mglru-extract-lruvec_populated_min_seq-helper.patch mm-mglru-reclaim-from-the-oldest-populated-gen.patch mm-mglru-lift-the-forced-protection-of-reclaimer.patch mm-mglru-skip-zones-above-reclaim_idx-instead-of-rotating-them.patch mm-mglru-return-for-unavailable-anon-reclaim-earlier.patch mm-mglru-balance-anon-and-file-scan-budget-by-refault-rate.patch mm-mglru-lift-youngest-gen-protection-for-higher-priority.patch