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=1794439578; b=Phx0ku8ZJNiz047piNtDJ5Pb6TCZK+cppf7EEHxiGGARJCnZA/NfUr2tIQ6tfjnVR0+B Z4YRwwz6vSymcL86e9yDlNp6zxg677ZR+5XEz5b9Nz7H5JjQC8SDYOyEJ8vWM1DRo0qK6 4eAngr3854VJYT+O3YSgewuVt9dRfrskSIl0v7/iHgD3t/F+4lrtYDWYcAMUNJHZdW3c1 35Ups+0XUxox0kKZ27OAmgJh0FB5/uPSVFsTkHEgDCVluHki3SsY++3wpSnQriPGDOOZ9 /lnTaWePjzUcnbhZwJGZMoZGYaYMuxn7aDzdMHdyqbBXpO4ss/WCk4ZGEjYCYqoQ+Yg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794439578; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-Id:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=XP8BVGG3k/SgxxucX4Qss0oWT0tMPudgWX8MpTd7f+o=; b=Lbu4g6X5CDjVamaj6Dog1naVRwILoLt9F/bpQ+YZE7VO70hVEktH5ci5OWyz3ZsRjA3D TsJz3h3ZY13w0CB0u0yjqaUxJ2dL2ASbrDocf4c8gGiuxSDf74l8wlxFePlVGYBKLBt0o eKeEf0BALWgjKcvO9wrJp4Ejsa9WGreTwdE7okOOAZ/HfL0eurCwwWOYs88Ia7iFMGHlk XsLPYtfrwZ3CmwStpWQuxWv8jz3TflCy9OEQq/QWbSrb3u6OeOSIy8go+v4y56smIMDtM O+AA2zi3JvTpSFJMniNqIbIh9vFAIFapLJfgs9pRSyRBYEuafOyGC3lykRNUUK8KdLg== 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="EZxbUB/Z"; 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 06B46606A32A for ; Wed, 11 Nov 2026 23:26:17 +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=EZxbUB/Z Received: by smtp.kernel.org (Postfix) with ESMTPSA id D65701F00A05; Wed, 11 Nov 2026 23:26:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794439577; bh=XP8BVGG3k/SgxxucX4Qss0oWT0tMPudgWX8MpTd7f+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=EZxbUB/Z7guwRZZ/08dAkZz0LLA30SSS8kVtBtH9dYNhkk9vo6OFA4OpKQuBqvgu9 ZZ5/r5dgZSqPgmVcV2Q+lXJ/NUxMWFHlyHYLNXCBaRbyQchcCFmHR9YX9wJkMzzbsu 8KN7bKEzSXiWbtcIOW+x0kQp6JwGQ0yRc7npIsi68uHbU7aaR6XBXoP/+yRG4DY6bK hMO9FKhAI9hzwGHgsxktbCQ2WqINtAqESUm1LNfLdJxFXBidzOn3mimI1kuIj/csJ1 TOynbEFY9zJNPbE/yL584+dd8QVtkaonKTZARJ1LILP+K6bzwYlE0BcvGNsARa1L4Y pmbk4YTy+md9Q== From: "Barry Song (Xiaomi)" To: akpm@linux-foundation.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, linux-mm@kvack.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 v7 01/16] mm/mglru: report evictable sizes per type Date: Thu, 12 Nov 2026 07:25:48 +0800 Message-Id: <20261111232603.9934-2-baohua@kernel.org> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20261111232603.9934-1-baohua@kernel.org> References: <20261111232603.9934-1-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 --- mm/vmscan.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 061fbd168d98..acc4efccda2f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4192,28 +4192,31 @@ 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; @@ -5021,7 +5024,7 @@ 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); /* @@ -5037,7 +5040,8 @@ 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; -- 2.34.1