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=1794598870; b=QBU7deHgw66+gncBK/AvstFZEXLJnQbfZWGtY70QEQHGC9YXXDj2T5onMHa3PirrEBju YEJZ6G3LThFIhnOX4AIOygkEcFXGGpD/KKljhoucUAxYp/sKje24u3+Kj07L0+wadvNDF ijZ1N0UsaqB36D8B9zNI9llguWJOhSgBs0JEwvzO+G0U+h0sP9pEQxCc23UtYTRmHcbQf xakZ8oMioF5R4ia07kA8Y71Urq75QxK+aYGcq3fvbD1t8i4tg6XGp31OL7jNvoa2mvyCv 2J6tvrpNxbPWnAeA/EQebn0+XR69L6XNccSXLHv6OgbPY6Hc02YcPtS2wMatzCuCZMw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794598870; h=Received:DKIM-Signature:Date:To:From:Subject:Message-Id; bh=H4/y3jPfGI6Jk2TG1visfvgihNEmFaKPdUa+UYD2q54=; b=T5j+DJZa3wRbm47enzY0UiwyKZYRYdjeF4yjtqRdvg/KXc5DgII0T568Q0qiyECTP+dZ 3sMsBSFfg3T8uzluRlJqhKBYhKOKLesgSopf6CIrFQv7RR+X5OwTSsX9pv6oP1MnSqIZB bTGpalYbp1xE082jTB3OU5NLRHWz4vfK1sI7dLByv5nMYHxv+HEywQD8xyy1lsVM/+eN2 ERzHRCPgodjk7qYSa/T8mpZG3dAmJuwjOUGZMJelYtssLprknYpWetZ/FfxBfM55fgWJC P27nBe+E2rGH6dzlALzUY1xiOwP+Ol+YhtQy0LRcloSEqMimNb9y0UPZ44obfj6x0wA== 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="vBq2/ha5"; 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 F2303606A332 for ; Fri, 13 Nov 2026 19:41:09 +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=vBq2/ha5 Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1EB41F000C4; Fri, 13 Nov 2026 19:41:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1794598869; bh=H4/y3jPfGI6Jk2TG1visfvgihNEmFaKPdUa+UYD2q54=; h=Date:To:From:Subject; b=vBq2/ha5+t7/UjS39jE2rwCWgIS55fOzuX8E3iPEXh7luR4f7jEQWRKt9wGYLcnUA fgGvCTakq2h3DlgAEc3rdb/YtULyW2bAIhdie+PWJ+DlMx+ywlloZgLdUbBNxWRrTw Fvb4lTyACNnkBI8QM5CQTXXnXlbhG6DVB9A/KHCk= Date: Fri, 13 Nov 2026 11:41:09 -0800 To: mm-commits@vger.kernel.org,kasong@tencent.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-mglru-extract-lruvec_populated_min_seq-helper.patch removed from -mm tree Message-Id: <20261113194109.B1EB41F000C4@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 quilt patch titled Subject: mm/mglru: extract lruvec_populated_min_seq() helper has been removed from the -mm tree. Its filename was mm-mglru-extract-lruvec_populated_min_seq-helper.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Kairui Song Subject: mm/mglru: extract lruvec_populated_min_seq() helper Date: Thu, 12 Nov 2026 07:25:49 +0800 The search for the oldest populated generation of a type, previously embedded in try_to_inc_min_seq(), is extracted into the new lruvec_populated_min_seq() helper. It returns the oldest populated seq of a given type, bounded by the given max_seq so the search never goes beyond it. No functional change. Link: https://lore.kernel.org/20261111232603.9934-3-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 --- mm/vmscan.c | 43 +++++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 14 deletions(-) --- a/mm/vmscan.c~mm-mglru-extract-lruvec_populated_min_seq-helper +++ a/mm/vmscan.c @@ -3992,30 +3992,45 @@ done: return true; } +/* Similar to lruvec_evictable_size, return the oldest populated seq of the type */ +static unsigned long lruvec_populated_min_seq(struct lruvec *lruvec, int type, + unsigned long max_seq) +{ + int gen, zone; + unsigned long min_seq; + struct lru_gen_folio *lrugen = &lruvec->lrugen; + + lockdep_assert_held(&lruvec->lru_lock); + + min_seq = READ_ONCE(lrugen->min_seq[type]); + while (min_seq <= max_seq) { + gen = lru_gen_from_seq(min_seq); + for (zone = 0; zone < MAX_NR_ZONES; zone++) { + if (!list_empty(&lrugen->folios[gen][type][zone])) + return min_seq; + } + min_seq++; + } + + return max_seq; +} + static void try_to_inc_min_seq(struct lruvec *lruvec, int swappiness) { - int gen, type, zone; + int type; bool seq_inc_flag = false; struct lru_gen_folio *lrugen = &lruvec->lrugen; DEFINE_MIN_SEQ(lruvec); + unsigned long seq; VM_WARN_ON_ONCE(!seq_is_valid(lruvec)); - /* find the oldest populated generation */ + /* Requires at least MIN_NR_GENS gens for basic functionality */ + seq = lrugen->max_seq - MIN_NR_GENS; for_each_evictable_type(type, swappiness) { - while (min_seq[type] + MIN_NR_GENS <= lrugen->max_seq) { - gen = lru_gen_from_seq(min_seq[type]); - - for (zone = 0; zone < MAX_NR_ZONES; zone++) { - if (!list_empty(&lrugen->folios[gen][type][zone])) - goto next; - } - - min_seq[type]++; + min_seq[type] = lruvec_populated_min_seq(lruvec, type, seq + 1); + if (min_seq[type] > lrugen->min_seq[type]) seq_inc_flag = true; - } -next: - ; } /* _ Patches currently in -mm which might be from kasong@tencent.com are 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