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[202.181.97.72]) by mx.google.com with ESMTPS id r65si1778752iod.30.2019.02.14.18.27.14 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Feb 2019 18:27:15 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of penguin-kernel@i-love.sakura.ne.jp designates 202.181.97.72 as permitted sender) client-ip=202.181.97.72; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of penguin-kernel@i-love.sakura.ne.jp designates 202.181.97.72 as permitted sender) smtp.mailfrom=penguin-kernel@i-love.sakura.ne.jp Received: from fsav404.sakura.ne.jp (fsav404.sakura.ne.jp [133.242.250.103]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id x1F2RBgd041783; Fri, 15 Feb 2019 11:27:11 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav404.sakura.ne.jp (F-Secure/fsigk_smtp/530/fsav404.sakura.ne.jp); Fri, 15 Feb 2019 11:27:11 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/530/fsav404.sakura.ne.jp) Received: from www262.sakura.ne.jp (localhost [127.0.0.1]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id x1F2RBSc041765; Fri, 15 Feb 2019 11:27:11 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: (from i-love@localhost) by www262.sakura.ne.jp (8.15.2/8.15.2/Submit) id x1F2RBhh041762; Fri, 15 Feb 2019 11:27:11 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Message-Id: <201902150227.x1F2RBhh041762@www262.sakura.ne.jp> X-Authentication-Warning: www262.sakura.ne.jp: i-love set sender to penguin-kernel@i-love.sakura.ne.jp using -f Subject: [linux-next-20190214] Free pages statistics is broken. From: Tetsuo Handa To: linux-mm@kvack.org Cc: Andrew Morton MIME-Version: 1.0 Date: Fri, 15 Feb 2019 11:27:10 +0900 Content-Type: text/plain; charset="ISO-2022-JP" Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: I noticed that amount of free memory reported by DMA: / DMA32: / Normal: fields are increasing over time. Since 5.0-rc6 is working correctly, some change in linux-next is causing this problem. ---------- [ 92.010105][T14750] Mem-Info: [ 92.012409][T14750] active_anon:623678 inactive_anon:2182 isolated_anon:0 [ 92.012409][T14750] active_file:7 inactive_file:99 isolated_file:0 [ 92.012409][T14750] unevictable:0 dirty:0 writeback:0 unstable:0 [ 92.012409][T14750] slab_reclaimable:16216 slab_unreclaimable:48544 [ 92.012409][T14750] mapped:623 shmem:2334 pagetables:9774 bounce:0 [ 92.012409][T14750] free:21145 free_pcp:332 free_cma:0 [ 92.034020][T14750] Node 0 active_anon:2494712kB inactive_anon:8728kB active_file:80kB inactive_file:320kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:2592kB dirty:0kB writeback:0kB shmem:9336kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2144256kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 92.052787][T14750] DMA free:12096kB min:352kB low:440kB high:528kB active_anon:3696kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15960kB managed:15876kB mlocked:0kB kernel_stack:0kB pagetables:36kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 92.063686][T14750] lowmem_reserve[]: 0 2647 2941 2941 [ 92.066370][T14750] DMA32 free:61212kB min:60508kB low:75632kB high:90756kB active_anon:2411444kB inactive_anon:460kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129152kB managed:2711060kB mlocked:0kB kernel_stack:36544kB pagetables:36212kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 92.084432][T14750] lowmem_reserve[]: 0 0 294 294 [ 92.088254][T14750] Normal free:11120kB min:6716kB low:8392kB high:10068kB active_anon:79572kB inactive_anon:8268kB active_file:360kB inactive_file:540kB unevictable:0kB writepending:0kB present:1048576kB managed:301068kB mlocked:0kB kernel_stack:7776kB pagetables:2848kB bounce:0kB free_pcp:140kB local_pcp:88kB free_cma:0kB [ 92.102106][T14750] lowmem_reserve[]: 0 0 0 0 [ 92.105259][T14750] DMA: 210*4kB () 105*8kB () 56*16kB (UM) 29*32kB (U) 13*64kB () 9*128kB (UM) 6*256kB (UM) 2*512kB () 2*1024kB (U) 2*2048kB (M) 2*4096kB (M) = 22384kB [ 92.113929][T14750] DMA32: 85952*4kB (UM) 36165*8kB (UM) 17368*16kB (UME) 11953*32kB (UME) 5598*64kB (UME) 2641*128kB (UM) 1252*256kB (ME) 604*512kB (UM) 303*1024kB (UM) 680*2048kB (U) 1*4096kB (M) = 4326600kB [ 92.124563][T14750] Normal: 41430*4kB (UE) 14837*8kB (UME) 10319*16kB (UE) 6379*32kB (UE) 2677*64kB () 1230*128kB () 557*256kB () 239*512kB () 83*1024kB () 42*2048kB () 0*4096kB = 1418384kB [ 92.132526][T14750] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [ 92.136838][T14750] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 92.141838][T14750] 2683 total pagecache pages [ 92.144736][T14750] 0 pages in swap cache [ 92.147422][T14750] Swap cache stats: add 0, delete 0, find 0/0 [ 92.150690][T14750] Free swap = 0kB [ 92.153216][T14750] Total swap = 0kB [ 92.156285][T14750] 1048422 pages RAM [ 92.159794][T14750] 0 pages HighMem/MovableOnly [ 92.162966][T14750] 291421 pages reserved [ 92.165806][T14750] 0 pages cma reserved ---------- ---------- [ 3204.099198][T42110] Mem-Info: [ 3204.101094][T42110] active_anon:645144 inactive_anon:14056 isolated_anon:0 [ 3204.101094][T42110] active_file:0 inactive_file:0 isolated_file:0 [ 3204.101094][T42110] unevictable:0 dirty:0 writeback:0 unstable:0 [ 3204.101094][T42110] slab_reclaimable:8328 slab_unreclaimable:47169 [ 3204.101094][T42110] mapped:990 shmem:22735 pagetables:1462 bounce:0 [ 3204.101094][T42110] free:22187 free_pcp:181 free_cma:0 [ 3204.116827][T42110] Node 0 active_anon:2580576kB inactive_anon:56224kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3960kB dirty:0kB writeback:0kB shmem:90940kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 1159168kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes [ 3204.127991][T42110] DMA free:12116kB min:352kB low:440kB high:528kB active_anon:3724kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15960kB managed:15876kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 3204.137735][T42110] lowmem_reserve[]: 0 2647 2941 2941 [ 3204.140385][T42110] DMA32 free:61592kB min:60508kB low:75632kB high:90756kB active_anon:2508676kB inactive_anon:9448kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129152kB managed:2711060kB mlocked:0kB kernel_stack:2304kB pagetables:4908kB bounce:0kB free_pcp:540kB local_pcp:0kB free_cma:0kB [ 3204.151829][T42110] lowmem_reserve[]: 0 0 294 294 [ 3204.154387][T42110] Normal free:15040kB min:21052kB low:22728kB high:24404kB active_anon:68176kB inactive_anon:46776kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:301068kB mlocked:0kB kernel_stack:6848kB pagetables:936kB bounce:0kB free_pcp:184kB local_pcp:0kB free_cma:0kB [ 3204.166972][T42110] lowmem_reserve[]: 0 0 0 0 [ 3204.169666][T42110] DMA: 3842*4kB (M) 1924*8kB () 970*16kB (M) 494*32kB (UM) 254*64kB (UM) 128*128kB (U) 74*256kB (UM) 36*512kB () 19*1024kB (U) 18*2048kB (M) 2*4096kB (M) = 196616kB [ 3204.177392][T42110] DMA32: 3222548*4kB (UM) 1353981*8kB (U) 579496*16kB (UM) 267125*32kB (UME) 111607*64kB (UME) 46106*128kB (UME) 18144*256kB (UM) 6284*512kB () 1521*1024kB () 7061*2048kB () 0*4096kB = 78467096kB [ 3204.185907][T42110] Normal: 637045*4kB () 202228*8kB (U) 64530*16kB (U) 19303*32kB (UE) 3969*64kB () 1321*128kB () 562*256kB () 239*512kB () 83*1024kB () 42*2048kB () 0*4096kB = 6676532kB [ 3204.193851][T42110] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [ 3204.198253][T42110] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 3204.202507][T42110] 22747 total pagecache pages [ 3204.205522][T42110] 0 pages in swap cache [ 3204.208297][T42110] Swap cache stats: add 0, delete 0, find 0/0 [ 3204.211716][T42110] Free swap = 0kB [ 3204.214380][T42110] Total swap = 0kB [ 3204.217017][T42110] 1048422 pages RAM [ 3204.219747][T42110] 0 pages HighMem/MovableOnly [ 3204.222754][T42110] 291421 pages reserved [ 3204.225527][T42110] 0 pages cma reserved ----------