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=1794686898; b=uxDOUaG7ERXPdn9b0cJ3hM9oF+50JjOn5Qu/COxYicALYXmzvyhw2+WcugVINpKi15df asV84CIQXEx+gAwJ20dLg2jOy/XpSTYW1cvyMRdCu9NlT5uCA5af+TIpcivJ/YD/U2vo8 p2YPZtB6W3+00sx2n/tPPTSLILDWXuZ9H0xynQ3S7YBGpB8Pbue0QjdOzFMFMvo0xtFEf 9aiAH8OwVO84+pcu6/y0x14ja084FDhI66ZQWPHoZG4CQnrM7bLYCyclAM0mtxthfeaUu 0lgvv6af3obkCaoBNCc91Va33rPAbEd8z405AIOEiePrzsf7HhMuw6ItZdNPj1tQqFQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794686898; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-Id:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=/dKIjKxFlwknpbWJVXX/cmtGsbGxhiJgbgpOqLZNO10=; b=zFdBB50sp4IGc1EDl/vAJv6h/hS+z+ALBzl4lzPOLN83jhWyv5inE1kZjl2Z9ABBGexG 42s62Drtk/lADYaUEZlirLN+xiY58qM654EGhURVMovv65Ty021dAzRwOIB7VTNLgfUnI rqpQCh+sZyLpSsPmbiJ2lImGJXdrbBuD232FQpF8VyHwbS+lySW32wK3jmZoCnGeyH/3t hRBceXzCBirRtQau4mLuhr+tDr07Mb0pVMDfCRcEHHLq/83xOl90whOFEHjTtZNzob5vO 3U2LWy7DoNHQiFK6Ht3XwpszUO+wDPFDDwhq/4ObCfm9GrKfBW2wXmYfdPWLW/cZ+tg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=HxtoOFve; 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 A9380606A331 for ; Sat, 14 Nov 2026 20:08:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=HxtoOFve Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A7721F000C6; Sat, 14 Nov 2026 20:08:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794686898; bh=/dKIjKxFlwknpbWJVXX/cmtGsbGxhiJgbgpOqLZNO10=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=HxtoOFve2T3VgwogTRiEZv3A4RdpF8863bbifdj51BC0LUnJhxcFyu6b8FUp9ehPS 13gdPW3bKoK3uPH0rqHF+OQlbpJ/tcMsXu+wBGzBwTmJsbfBnmGcOoUUTbIO2A1Qs2 +URqoL7N/Zsunypjrq6QxBhB1s5sNXfSNEPGT5Ke+b7EfddtEzs4C0+HJEL4n6uKGt CEXXwPiR/LOiZHKLhVOyeXfTjzeJ+HIVEYsP4qR+hkMsb9Awa8HdPaOdXo1W4sTvkv Gh8dH3is7b2QzKsg2AFRpYnCsmdke976eJ6ZVlTBGmUaRjEq2rWO+4BXZ3t7RnLlzz fuxsKWJ/JdRPA== From: "Barry Song (Xiaomi)" To: akpm@linux-foundation.org, linux-mm@kvack.org Cc: axelrasmussen@google.com, baolin.wang@linux.alibaba.com, baoquan.he@linux.dev, hannes@cmpxchg.org, hui.zhu@linux.dev, kasong@tencent.com, kunwu.chan@gmail.com, liam@infradead.org, lianux.mm@gmail.com, linux-kernel@vger.kernel.org, liuxiang.277@bytedance.com, lyugaofei@xiaomi.com, mhocko@kernel.org, mhocko@suse.com, qi.zheng@linux.dev, ridong.chen@linux.dev, rppt@kernel.org, ryncsn@gmail.com, shakeel.butt@linux.dev, surenb@google.com, wangzicheng@honor.com, weixugc@google.com, yuanchu@google.com, zhangbo56@xiaomi.com, zhuhui@kylinos.cn, sidchintamaneni@gmail.com, Barry Song Subject: [PATCH v9 01/16] mm/mglru: report evictable sizes per type Date: Sun, 15 Nov 2026 04:07:48 +0800 Message-Id: <20261114200803.23129-2-baohua@kernel.org> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20261114200803.23129-1-baohua@kernel.org> References: <20261114200803.23129-1-baohua@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kairui Song Change lruvec_evictable_size() to return the number of evictable anonymous and file pages separately instead of a single total, so that callers can weigh the two types independently. Update lruvec_is_sizable() and get_nr_to_scan() accordingly; the summed totals are unchanged, so there is no functional change. Signed-off-by: Kairui Song Signed-off-by: Barry Song (Xiaomi) Reviewed-by: Kunwu Chan Reviewed-by: Baolin Wang --- mm/vmscan.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 46be9c7e967c..400f87fc51e1 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4193,28 +4193,31 @@ static void set_initial_priority(struct pglist_data *pgdat, struct scan_control sc->priority = clamp(priority, DEF_PRIORITY / 2, DEF_PRIORITY); } -static unsigned long lruvec_evictable_size(struct lruvec *lruvec, int swappiness) +static void lruvec_evictable_size(struct lruvec *lruvec, int swappiness, + unsigned long nr[]) { int type; - unsigned long seq, total = 0; + unsigned long seq; struct lru_gen_folio *lrugen = &lruvec->lrugen; DEFINE_MAX_SEQ(lruvec); DEFINE_MIN_SEQ(lruvec); + nr[LRU_GEN_ANON] = 0; + nr[LRU_GEN_FILE] = 0; + for_each_evictable_type(type, swappiness) { for (seq = min_seq[type]; seq <= max_seq; seq++) - total += lruvec_gen_size(lrugen, type, seq); + nr[type] += lruvec_gen_size(lrugen, type, seq); } - - return total; } static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc) { - unsigned long total; + unsigned long total, sizes[ANON_AND_FILE]; int swappiness = get_swappiness(lruvec, sc); - total = lruvec_evictable_size(lruvec, swappiness); + lruvec_evictable_size(lruvec, swappiness, sizes); + total = sizes[LRU_GEN_ANON] + sizes[LRU_GEN_FILE]; /* whether the size is big enough to be helpful */ return total >> sc->priority; @@ -5028,7 +5031,7 @@ static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq, static long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc, struct mem_cgroup *memcg, int swappiness) { - unsigned long nr_to_scan, evictable; + unsigned long nr_to_scan, evictable, sizes[ANON_AND_FILE]; struct pglist_data *pgdat = lruvec_pgdat(lruvec); /* @@ -5044,7 +5047,8 @@ static long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc, return 0; } - evictable = lruvec_evictable_size(lruvec, swappiness); + lruvec_evictable_size(lruvec, swappiness, sizes); + evictable = sizes[LRU_GEN_ANON] + sizes[LRU_GEN_FILE]; nr_to_scan = apply_proportional_protection(memcg, sc, evictable); nr_to_scan >>= sc->priority; -- 2.39.3 (Apple Git-146)