Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756246AbZISBxp (ORCPT ); Fri, 18 Sep 2009 21:53:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754227AbZISBxn (ORCPT ); Fri, 18 Sep 2009 21:53:43 -0400 Received: from mga14.intel.com ([143.182.124.37]:12805 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753645AbZISBxm (ORCPT ); Fri, 18 Sep 2009 21:53:42 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,412,1249282800"; d="scan'208";a="189355030" Date: Sat, 19 Sep 2009 09:53:35 +0800 From: Wu Fengguang To: Jan Kara Cc: "jens.axboe@oracle.com" , LKML Subject: Re: [PATCH] fs: Fix busyloop in wb_writeback() Message-ID: <20090919015334.GA14883@localhost> References: <1253121768-20673-1-git-send-email-jack@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1253121768-20673-1-git-send-email-jack@suse.cz> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 21828 Lines: 257 Hi Jan, On Thu, Sep 17, 2009 at 01:22:48AM +0800, Jan Kara wrote: > If all inodes are under writeback (e.g. in case when there's only one inode > with dirty pages), wb_writeback() with WB_SYNC_NONE work basically degrades > to busylooping until I_SYNC flags of the inode is cleared. Fix the problem by > waiting on I_SYNC flags of an inode on b_more_io list in case we failed to > write anything. Reviewed-by: Wu Fengguang I can confirm this works. The traces before/after patch show that many the fruitless loops are eliminated. Note that the busy loops can happen _before_ and _during_ block io queue congestion, so it looks like a very competitive alternative to the old congestion_wait(). Thanks, Fengguang --- writeback traces for cp /dev/zero /mnt/test/zero0 & dd if=/dev/zero of=/mnt/test/zero1 & BEFORE [ 315.025469] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 315.043293] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 320.065739] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 320.072397] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 391050 written 0 [ 325.081930] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 325.087874] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 328.752015] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 328.769780] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 328.795771] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 328.814094] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 330.848860] sda: sda1 sda2 [ 330.877501] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 330.895610] global dirty 1 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 330.920078] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 330.938017] global dirty 1 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 330.982888] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 331.000240] global dirty 1 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 331.009272] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 331.015196] global dirty 1 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 335.962649] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 335.980258] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 336.022632] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 336.040266] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 341.002978] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 341.011937] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 341.062940] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 341.071762] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 346.023053] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 346.030616] global dirty 3818 writeback 167 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 346.051762] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 16384 [ 346.058400] global dirty 3438 writeback 227 nfs 0 flags _M towrite 0 skipped 0 file 0 written 16384 [ 347.283567] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 16384 [ 347.290027] global dirty 13054 writeback 70 nfs 0 flags _M towrite 0 skipped 0 file 0 written 16384 [ 347.877429] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 16384 [ 347.884693] global dirty 3902 writeback 1622 nfs 0 flags _M towrite 0 skipped 0 file 0 written 16384 [ 348.124756] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 6967 [ 348.131689] global dirty 2 writeback 1702 nfs 0 flags __ towrite 9417 skipped 0 file 0 written 6967 [ 348.141112] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 348.146952] global dirty 2 writeback 1672 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 348.911029] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 15479 [ 348.918377] global dirty 1 writeback 1233 nfs 0 flags __ towrite 905 skipped 0 file 0 written 15479 [ 351.039556] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 351.045437] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 353.923671] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 353.941259] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 356.063781] fs/fs-writeback.c 776 wb_writeback: flush-0:15(1527) 0 [ 356.081537] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 [ 358.963986] fs/fs-writeback.c 776 wb_writeback: flush-8:0(2824) 0 [ 358.981406] global dirty 0 writeback 0 nfs 0 flags __ towrite 16384 skipped 0 file 0 written 0 AFTER (with format changes and 128M MAX_WRITEBACK_PAGES) [ 55.457583] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 55.468583] global dirty=2 writeback=0 nfs=1 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 57.835277] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=1 [ 57.845211] global dirty=2 writeback=0 nfs=1 flags=__ towrite=32767 skipped=0 file=317634 written=1 [ 60.477882] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 60.487177] global dirty=1 writeback=0 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 62.857975] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 62.865541] global dirty=1 writeback=0 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 65.497957] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 65.502201] global dirty=1 writeback=0 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 66.449865] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11437 [ 66.454802] global dirty=127 writeback=4820 nfs=2 flags=__ towrite=21331 skipped=0 file=12 written=5589 [ 67.089220] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11355 [ 67.093548] global dirty=257 writeback=3490 nfs=2 flags=__ towrite=21413 skipped=0 file=12 written=8273 [ 67.704613] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11347 [ 67.712514] global dirty=227 writeback=1810 nfs=2 flags=__ towrite=21421 skipped=0 file=12 written=8168 [ 67.874118] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 67.877341] global dirty=2337 writeback=0 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 68.417686] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11566 [ 68.421556] global dirty=357 writeback=5000 nfs=2 flags=__ towrite=21202 skipped=0 file=12 written=8074 [ 69.252307] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11994 [ 69.266007] global dirty=923 writeback=720 nfs=2 flags=__ towrite=20774 skipped=0 file=12 written=8758 [ 69.899959] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11837 [ 69.906911] global dirty=300 writeback=3156 nfs=2 flags=__ towrite=20931 skipped=0 file=12 written=8197 [ 70.553993] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11504 [ 70.560360] global dirty=280 writeback=4256 nfs=2 flags=__ towrite=21264 skipped=0 file=0 written=36 [ 70.577045] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 70.585187] global dirty=280 writeback=4126 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 71.323770] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11896 [ 71.329727] global dirty=460 writeback=10132 nfs=2 flags=__ towrite=20872 skipped=0 file=12 written=8877 [ 72.887085] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 74.189957] global dirty=9632 writeback=5243 nfs=2 flags=__ towrite=32768 skipped=0 file=314386 written=0 [ 74.367971] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11987 [ 74.396704] global dirty=298 writeback=15315 nfs=2 flags=__ towrite=20781 skipped=0 file=12 written=7758 [ 75.249214] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12148 [ 75.258805] global dirty=348 writeback=5021 nfs=2 flags=__ towrite=20620 skipped=0 file=12 written=9810 [ 76.288875] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=17368 [ 76.297156] global dirty=1792 writeback=542 nfs=2 flags=__ towrite=15400 skipped=0 file=0 written=5 [ 76.307482] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 76.328242] global dirty=1792 writeback=292 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 76.759708] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11691 [ 76.762893] global dirty=230 writeback=3874 nfs=2 flags=__ towrite=21077 skipped=0 file=12 written=7960 [ 77.261358] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11851 [ 77.267354] global dirty=279 writeback=3373 nfs=2 flags=__ towrite=20917 skipped=0 file=12 written=9484 [ 77.767085] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12188 [ 77.770236] global dirty=319 writeback=3769 nfs=2 flags=__ towrite=20580 skipped=0 file=12 written=9739 [ 78.287216] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11867 [ 78.292713] global dirty=416 writeback=2570 nfs=2 flags=__ towrite=20901 skipped=0 file=12 written=9548 [ 78.982964] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12784 [ 79.050506] global dirty=715 writeback=7312 nfs=2 flags=__ towrite=19984 skipped=0 file=12 written=10122 [ 79.217120] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 79.339208] global dirty=2627 writeback=4624 nfs=2 flags=__ towrite=32768 skipped=0 file=391050 written=0 [ 79.831759] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12303 [ 79.842709] global dirty=350 writeback=12302 nfs=2 flags=__ towrite=20465 skipped=0 file=12 written=9661 [ 81.664025] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=20207 [ 81.667844] global dirty=2342 writeback=1226 nfs=2 flags=__ towrite=12561 skipped=0 file=12 written=17537 [ 81.674537] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 81.679015] global dirty=2342 writeback=976 nfs=2 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 82.203041] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12762 [ 82.205884] global dirty=496 writeback=3170 nfs=2 flags=__ towrite=20006 skipped=0 file=12 written=9205 [ 83.153241] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=17142 [ 83.160762] global dirty=1332 writeback=3474 nfs=2 flags=__ towrite=15626 skipped=0 file=12 written=14034 [ 83.752083] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=13238 [ 83.761354] global dirty=522 writeback=10440 nfs=2 flags=__ towrite=19530 skipped=0 file=12 written=10428 [ 84.448215] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 84.514842] global dirty=85 writeback=257 nfs=2 flags=__ towrite=32768 skipped=0 file=309507 written=0 [ 84.653061] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11758 [ 84.666930] global dirty=475 writeback=1389 nfs=2 flags=__ towrite=21010 skipped=0 file=12 written=8598 [ 85.596776] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=15875 [ 85.610176] global dirty=1255 writeback=2492 nfs=1 flags=__ towrite=16893 skipped=0 file=12 written=12963 [ 86.679880] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=19187 [ 86.685391] global dirty=1941 writeback=700 nfs=1 flags=__ towrite=13581 skipped=0 file=12 written=15835 [ 86.693720] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 86.732001] global dirty=1941 writeback=440 nfs=1 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 87.220513] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12074 [ 87.226822] global dirty=280 writeback=3514 nfs=1 flags=__ towrite=20694 skipped=0 file=12 written=7892 [ 88.401825] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=18287 [ 88.521634] global dirty=1576 writeback=7698 nfs=1 flags=__ towrite=14481 skipped=0 file=12 written=15676 [ 88.545912] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=1700 [ 88.558696] global dirty=2 writeback=9392 nfs=1 flags=__ towrite=31068 skipped=0 file=12 written=131 [ 89.527762] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 89.540987] global dirty=8520 writeback=1 nfs=1 flags=__ towrite=32768 skipped=0 file=317634 written=0 [ 90.373312] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=22441 [ 90.385804] global dirty=2793 writeback=99 nfs=0 flags=__ towrite=10327 skipped=0 file=12 written=20896 [ 90.896688] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11962 [ 90.905466] global dirty=172 writeback=6032 nfs=0 flags=__ towrite=20806 skipped=0 file=0 written=4 [ 91.539929] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12300 [ 91.548079] global dirty=382 writeback=3210 nfs=0 flags=__ towrite=20468 skipped=0 file=12 written=10106 [ 92.046175] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12025 [ 92.054893] global dirty=320 writeback=8380 nfs=0 flags=__ towrite=20743 skipped=0 file=12 written=9523 [ 92.066455] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 92.075349] global dirty=320 writeback=8250 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 94.606396] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 94.620091] global dirty=18234 writeback=437 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 94.680711] mm/page-writeback.c +539 balance_dirty_pages(): comm=cp pid=2829 n=1536 [ 94.708757] global dirty=18234 writeback=117 nfs=0 flags=_M towrite=0 skipped=0 file=12 written=1536 [ 94.845526] mm/page-writeback.c +539 balance_dirty_pages(): comm=cp pid=2829 n=1536 [ 94.858110] global dirty=18740 writeback=377 nfs=0 flags=_M towrite=0 skipped=0 file=12 written=1536 [ 94.967886] mm/page-writeback.c +539 balance_dirty_pages(): comm=cp pid=2829 n=1536 [ 94.986908] global dirty=18232 writeback=825 nfs=0 flags=_M towrite=0 skipped=0 file=12 written=1536 [ 95.015415] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=3068 [ 95.049828] global dirty=18232 writeback=3287 nfs=0 flags=__ towrite=29700 skipped=0 file=13 written=3068 [ 95.992550] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=27637 [ 96.123581] global dirty=2 writeback=13998 nfs=0 flags=__ towrite=5131 skipped=0 file=13 written=1864 [ 96.397437] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=312 [ 96.400451] global dirty=2 writeback=6892 nfs=0 flags=__ towrite=32456 skipped=0 file=13 written=119 [ 97.104951] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12686 [ 97.193731] global dirty=364 writeback=9422 nfs=0 flags=__ towrite=20082 skipped=0 file=13 written=3420 [ 97.216739] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 97.223789] global dirty=364 writeback=9162 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 99.158402] mm/page-writeback.c +539 balance_dirty_pages(): comm=dd pid=2830 n=0 [ 99.162137] global dirty=27516 writeback=0 nfs=0 flags=_M towrite=1536 skipped=0 file=0 written=0 [ 99.185804] mm/page-writeback.c +539 balance_dirty_pages(): comm=cp pid=2829 n=1536 [ 99.193891] global dirty=3926 writeback=30 nfs=0 flags=_M towrite=0 skipped=0 file=13 written=1536 [ 99.284045] mm/page-writeback.c +539 balance_dirty_pages(): comm=cp pid=2829 n=0 [ 99.291527] global dirty=24718 writeback=0 nfs=0 flags=_M towrite=12 skipped=0 file=0 written=0 [ 99.415383] mm/page-writeback.c +539 balance_dirty_pages(): comm=dd pid=2830 n=1536 [ 99.421834] global dirty=22818 writeback=340 nfs=0 flags=_M towrite=0 skipped=0 file=13 written=1536 [ 99.587007] mm/page-writeback.c +539 balance_dirty_pages(): comm=dd pid=2830 n=1536 [ 99.598065] global dirty=18574 writeback=1130 nfs=0 flags=_M towrite=0 skipped=0 file=13 written=1536 [ 99.679940] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 99.686266] global dirty=17604 writeback=0 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 100.248582] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=32442 [ 100.441214] global dirty=2453 writeback=5776 nfs=0 flags=__ towrite=326 skipped=0 file=12 written=32442 [ 102.362534] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=22551 [ 102.501230] global dirty=4200 writeback=15770 nfs=0 flags=__ towrite=10217 skipped=0 file=12 written=19081 [ 103.255460] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=8602 [ 103.527612] global dirty=216 writeback=17970 nfs=0 flags=__ towrite=24166 skipped=0 file=12 written=4099 [ 103.541034] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 103.592828] global dirty=216 writeback=17720 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 104.599401] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11468 [ 104.717221] global dirty=169 writeback=19068 nfs=0 flags=__ towrite=21300 skipped=0 file=12 written=8234 [ 104.865264] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 104.963345] global dirty=169 writeback=18048 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 107.321816] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=32768 [ 107.334944] global dirty=2598 writeback=16741 nfs=0 flags=_M towrite=0 skipped=0 file=12 written=30241 [ 107.510672] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=3350 [ 107.524301] global dirty=2 writeback=18041 nfs=0 flags=__ towrite=29418 skipped=0 file=12 written=1072 [ 108.391365] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12939 [ 108.448731] global dirty=186 writeback=17293 nfs=0 flags=__ towrite=19829 skipped=0 file=12 written=10161 [ 108.641344] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 108.660176] global dirty=186 writeback=15887 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 109.432398] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11167 [ 109.519369] global dirty=252 writeback=16768 nfs=0 flags=__ towrite=21601 skipped=0 file=12 written=8985 [ 109.964534] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 110.202144] global dirty=6614 writeback=8453 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 111.449967] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=20458 [ 111.497377] global dirty=1244 writeback=14844 nfs=0 flags=__ towrite=12310 skipped=0 file=12 written=19047 [ 111.578967] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=1740 [ 111.689508] global dirty=4 writeback=13764 nfs=0 flags=__ towrite=31028 skipped=0 file=12 written=0 [ 112.402427] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12937 [ 112.496227] global dirty=435 writeback=18004 nfs=0 flags=__ towrite=19831 skipped=0 file=12 written=10037 [ 113.649987] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12469 [ 113.762850] global dirty=417 writeback=8854 nfs=0 flags=__ towrite=20299 skipped=0 file=12 written=9559 [ 113.777059] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 113.819819] global dirty=417 writeback=7380 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 114.469119] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=11468 [ 114.477888] global dirty=436 writeback=9377 nfs=0 flags=__ towrite=21300 skipped=0 file=12 written=8719 [ 115.205915] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=12628 [ 115.235844] global dirty=429 writeback=12730 nfs=0 flags=__ towrite=20140 skipped=0 file=12 written=9233 [ 115.286230] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 115.298967] global dirty=1119 writeback=10552 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 116.607551] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=25306 [ 116.617596] global dirty=1264 writeback=15443 nfs=0 flags=__ towrite=7462 skipped=0 file=12 written=22359 [ 116.660825] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=1491 [ 116.669616] global dirty=6 writeback=15261 nfs=0 flags=__ towrite=31277 skipped=0 file=12 written=213 [ 118.348742] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=15753 [ 118.495918] global dirty=1126 writeback=5683 nfs=0 flags=__ towrite=17015 skipped=0 file=12 written=14199 [ 119.455353] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=8122 [ 119.463974] global dirty=0 writeback=8928 nfs=0 flags=__ towrite=24646 skipped=0 file=12 written=5218 [ 119.474554] fs/fs-writeback.c +777 wb_writeback(): comm=flush-8:0 pid=2827 n=0 [ 119.516772] global dirty=0 writeback=7656 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 [ 120.313149] fs/fs-writeback.c +777 wb_writeback(): comm=flush-0:15 pid=1149 n=0 [ 120.315446] global dirty=1 writeback=0 nfs=0 flags=__ towrite=32768 skipped=0 file=0 written=0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/