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From: Fengguang Wu <fengguang.wu@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Chinner <david@fromorbit.com>, Tejun Heo <tj@kernel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Christoph Hellwig <hch@lst.de>,
	"Huang, Ying" <ying.huang@intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Bob Peterson <rpeterso@redhat.com>, LKP <lkp@01.org>
Subject: Re: [LKP] [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression
Date: Mon, 15 Aug 2016 20:58:01 +0800	[thread overview]
Message-ID: <20160815125801.GA21083@wfg-t540p.sh.intel.com> (raw)
In-Reply-To: <CA+55aFwYcjXn7kpLFWQ=jF0sSrhEfZhqNsjR+6O89OOH9qRNOw@mail.gmail.com>

On Fri, Aug 12, 2016 at 11:03:33AM -0700, Linus Torvalds wrote:
>On Thu, Aug 11, 2016 at 8:56 PM, Dave Chinner <david@fromorbit.com> wrote:
>> On Thu, Aug 11, 2016 at 07:27:52PM -0700, Linus Torvalds wrote:
>>>
>>> I don't recall having ever seen the mapping tree_lock as a contention
>>> point before, but it's not like I've tried that load either. So it
>>> might be a regression (going back long, I suspect), or just an unusual
>>> load that nobody has traditionally tested much.
>>>
>>> Single-threaded big file write one page at a time, was it?
>>
>> Yup. On a 4 node NUMA system.
>
>Ok, I can't see any real contention on my single-node workstation
>(running ext4 too, so there may be filesystem differences), but I
>guess that shouldn't surprise me. The cacheline bouncing just isn't
>expensive enough when it all stays on-die.
>
>I can see the tree_lock in my profiles (just not very high), and at
>least for ext4 the main caller ssems to be
>__set_page_dirty_nobuffers().
>
>And yes, looking at that, the biggest cost by _far_ inside the
>spinlock seems to be the accounting.
>
>Which doesn't even have to be inside the mapping lock, as far as I can
>tell, and as far as comments go.
>
>So a stupid patch to just move the dirty page accounting to outside
>the spinlock might help a lot.
>
>Does this attached patch help your contention numbers?

Hi Linus,

The 1BRD tests finished and there are no conclusive changes.

The overall aim7 jobs-per-min slightly decreases and
the overall fsmark files_per_sec slightly increases,
however both are small enough (less than 1%), which are kind of
expected numbers.

NUMA test results should be available tomorrow.

99091700659f4df9  1b5f2eb4a752e1fa7102f37545  testcase/testparams/testbox
----------------  --------------------------  ---------------------------
         %stddev     %change         %stddev
             \          |                \
     71443                       71286        GEO-MEAN aim7.jobs-per-min
       972                         961        aim7/1BRD_48G-btrfs-creat-clo-4-performance/ivb44
     52205                       51525        aim7/1BRD_48G-btrfs-disk_cp-1500-performance/ivb44
   2184471 ±  4%        -6%    2051740 ±  3%  aim7/1BRD_48G-btrfs-disk_rd-9000-performance/ivb44
     47049                       46630 ±  3%  aim7/1BRD_48G-btrfs-disk_rr-1500-performance/ivb44
     24932              -4%      23812        aim7/1BRD_48G-btrfs-disk_rw-1500-performance/ivb44
      5884                        5856        aim7/1BRD_48G-btrfs-disk_src-500-performance/ivb44
     51430                       51286        aim7/1BRD_48G-btrfs-disk_wrt-1500-performance/ivb44
       218                         220        aim7/1BRD_48G-btrfs-sync_disk_rw-10-performance/ivb44
     22777                       23199        aim7/1BRD_48G-ext4-creat-clo-1000-performance/ivb44
    130085                      128991        aim7/1BRD_48G-ext4-disk_cp-3000-performance/ivb44
   2434088 ±  3%        -8%    2232211 ±  4%  aim7/1BRD_48G-ext4-disk_rd-9000-performance/ivb44
    130351                      128977        aim7/1BRD_48G-ext4-disk_rr-3000-performance/ivb44
     73280                       74044        aim7/1BRD_48G-ext4-disk_rw-3000-performance/ivb44
    277035              -3%     268057        aim7/1BRD_48G-ext4-disk_src-3000-performance/ivb44
    127584               4%     132639        aim7/1BRD_48G-ext4-disk_wrt-3000-performance/ivb44
     10571                       10659        aim7/1BRD_48G-ext4-sync_disk_rw-600-performance/ivb44
     36924 ±  7%                 36327        aim7/1BRD_48G-f2fs-creat-clo-1500-performance/ivb44
    117238                      119130        aim7/1BRD_48G-f2fs-disk_cp-3000-performance/ivb44
   2340512 ±  5%               2352619 ± 10%  aim7/1BRD_48G-f2fs-disk_rd-9000-performance/ivb44
    107506 ±  9%         7%     114869        aim7/1BRD_48G-f2fs-disk_rr-3000-performance/ivb44
    105642                      106835        aim7/1BRD_48G-f2fs-disk_rw-3000-performance/ivb44
     26900 ±  3%                 26442 ±  3%  aim7/1BRD_48G-f2fs-disk_src-3000-performance/ivb44
    117124 ±  3%                117678        aim7/1BRD_48G-f2fs-disk_wrt-3000-performance/ivb44
      3689                        3616        aim7/1BRD_48G-f2fs-sync_disk_rw-600-performance/ivb44
     70897                       72758        aim7/1BRD_48G-xfs-creat-clo-1500-performance/ivb44
    267649 ±  3%                270867        aim7/1BRD_48G-xfs-disk_cp-3000-performance/ivb44
    485217 ±  3%                489403        aim7/1BRD_48G-xfs-disk_rd-9000-performance/ivb44
    360451                      359042        aim7/1BRD_48G-xfs-disk_rr-3000-performance/ivb44
    338114                      336838        aim7/1BRD_48G-xfs-disk_rw-3000-performance/ivb44
     60130 ±  5%         4%      62663        aim7/1BRD_48G-xfs-disk_src-3000-performance/ivb44
    403144                      401476        aim7/1BRD_48G-xfs-disk_wrt-3000-performance/ivb44
     26327                       26513        aim7/1BRD_48G-xfs-sync_disk_rw-600-performance/ivb44

99091700659f4df9  1b5f2eb4a752e1fa7102f37545
----------------  --------------------------
      2117                        2138        GEO-MEAN fsmark.files_per_sec
      4325                        4379        fsmark/1x-1t-1BRD_32G-btrfs-4K-4G-fsyncBeforeClose-1fpd-performance/ivb43
      9466 ±  3%         4%       9804        fsmark/1x-1t-1BRD_32G-ext4-4K-4G-fsyncBeforeClose-1fpd-performance/ivb43
       433 ±  5%                   424        fsmark/1x-1t-1BRD_48G-btrfs-4M-40G-NoSync-performance/ivb44
       185 ±  6%         5%        194        fsmark/1x-1t-1BRD_48G-btrfs-4M-40G-fsyncBeforeClose-performance/ivb44
       368 ±  3%        -4%        355 ±  6%  fsmark/1x-1t-1BRD_48G-ext4-4M-40G-NoSync-performance/ivb44
       191                         191        fsmark/1x-1t-1BRD_48G-ext4-4M-40G-fsyncBeforeClose-performance/ivb44
       393 ±  4%                   397 ±  4%  fsmark/1x-1t-1BRD_48G-xfs-4M-40G-NoSync-performance/ivb44
       200                         201        fsmark/1x-1t-1BRD_48G-xfs-4M-40G-fsyncBeforeClose-performance/ivb44
       924              -3%        896 ±  3%  fsmark/1x-1t-1HDD-xfs-4K-400M-fsyncBeforeClose-1fpd-performance/ivb43
       488 ±  3%         6%        516        fsmark/1x-64t-1BRD_48G-btrfs-4M-40G-NoSync-performance/ivb44
       559                         564        fsmark/1x-64t-1BRD_48G-ext4-4M-40G-NoSync-performance/ivb44
      1130                        1111        fsmark/1x-64t-1BRD_48G-ext4-4M-40G-fsyncBeforeClose-performance/ivb44
       526 ±  7%         6%        557        fsmark/1x-64t-1BRD_48G-xfs-4M-40G-NoSync-performance/ivb44
      1583 ±  3%                  1620        fsmark/1x-64t-1BRD_48G-xfs-4M-40G-fsyncBeforeClose-performance/ivb44
     33202                       33208        fsmark/8-1SSD-16-ext4-8K-75G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     33889                       33784        fsmark/8-1SSD-16-ext4-9B-48G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     25576                       25509        fsmark/8-1SSD-32-xfs-9B-30G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
      9117                        9079        fsmark/8-1SSD-4-btrfs-8K-24G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     13288                       13261        fsmark/8-1SSD-4-btrfs-9B-16G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     18851 ± 11%        11%      21013        fsmark/8-1SSD-4-f2fs-8K-72G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     24343              -4%      23473 ±  4%  fsmark/8-1SSD-4-f2fs-9B-40G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4

Thanks,
Fengguang

WARNING: multiple messages have this Message-ID (diff)
From: Fengguang Wu <fengguang.wu@intel.com>
To: lkp@lists.01.org
Subject: Re: [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression
Date: Mon, 15 Aug 2016 20:58:01 +0800	[thread overview]
Message-ID: <20160815125801.GA21083@wfg-t540p.sh.intel.com> (raw)
In-Reply-To: <CA+55aFwYcjXn7kpLFWQ=jF0sSrhEfZhqNsjR+6O89OOH9qRNOw@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 7847 bytes --]

On Fri, Aug 12, 2016 at 11:03:33AM -0700, Linus Torvalds wrote:
>On Thu, Aug 11, 2016 at 8:56 PM, Dave Chinner <david@fromorbit.com> wrote:
>> On Thu, Aug 11, 2016 at 07:27:52PM -0700, Linus Torvalds wrote:
>>>
>>> I don't recall having ever seen the mapping tree_lock as a contention
>>> point before, but it's not like I've tried that load either. So it
>>> might be a regression (going back long, I suspect), or just an unusual
>>> load that nobody has traditionally tested much.
>>>
>>> Single-threaded big file write one page at a time, was it?
>>
>> Yup. On a 4 node NUMA system.
>
>Ok, I can't see any real contention on my single-node workstation
>(running ext4 too, so there may be filesystem differences), but I
>guess that shouldn't surprise me. The cacheline bouncing just isn't
>expensive enough when it all stays on-die.
>
>I can see the tree_lock in my profiles (just not very high), and at
>least for ext4 the main caller ssems to be
>__set_page_dirty_nobuffers().
>
>And yes, looking at that, the biggest cost by _far_ inside the
>spinlock seems to be the accounting.
>
>Which doesn't even have to be inside the mapping lock, as far as I can
>tell, and as far as comments go.
>
>So a stupid patch to just move the dirty page accounting to outside
>the spinlock might help a lot.
>
>Does this attached patch help your contention numbers?

Hi Linus,

The 1BRD tests finished and there are no conclusive changes.

The overall aim7 jobs-per-min slightly decreases and
the overall fsmark files_per_sec slightly increases,
however both are small enough (less than 1%), which are kind of
expected numbers.

NUMA test results should be available tomorrow.

99091700659f4df9  1b5f2eb4a752e1fa7102f37545  testcase/testparams/testbox
----------------  --------------------------  ---------------------------
         %stddev     %change         %stddev
             \          |                \
     71443                       71286        GEO-MEAN aim7.jobs-per-min
       972                         961        aim7/1BRD_48G-btrfs-creat-clo-4-performance/ivb44
     52205                       51525        aim7/1BRD_48G-btrfs-disk_cp-1500-performance/ivb44
   2184471 ±  4%        -6%    2051740 ±  3%  aim7/1BRD_48G-btrfs-disk_rd-9000-performance/ivb44
     47049                       46630 ±  3%  aim7/1BRD_48G-btrfs-disk_rr-1500-performance/ivb44
     24932              -4%      23812        aim7/1BRD_48G-btrfs-disk_rw-1500-performance/ivb44
      5884                        5856        aim7/1BRD_48G-btrfs-disk_src-500-performance/ivb44
     51430                       51286        aim7/1BRD_48G-btrfs-disk_wrt-1500-performance/ivb44
       218                         220        aim7/1BRD_48G-btrfs-sync_disk_rw-10-performance/ivb44
     22777                       23199        aim7/1BRD_48G-ext4-creat-clo-1000-performance/ivb44
    130085                      128991        aim7/1BRD_48G-ext4-disk_cp-3000-performance/ivb44
   2434088 ±  3%        -8%    2232211 ±  4%  aim7/1BRD_48G-ext4-disk_rd-9000-performance/ivb44
    130351                      128977        aim7/1BRD_48G-ext4-disk_rr-3000-performance/ivb44
     73280                       74044        aim7/1BRD_48G-ext4-disk_rw-3000-performance/ivb44
    277035              -3%     268057        aim7/1BRD_48G-ext4-disk_src-3000-performance/ivb44
    127584               4%     132639        aim7/1BRD_48G-ext4-disk_wrt-3000-performance/ivb44
     10571                       10659        aim7/1BRD_48G-ext4-sync_disk_rw-600-performance/ivb44
     36924 ±  7%                 36327        aim7/1BRD_48G-f2fs-creat-clo-1500-performance/ivb44
    117238                      119130        aim7/1BRD_48G-f2fs-disk_cp-3000-performance/ivb44
   2340512 ±  5%               2352619 ± 10%  aim7/1BRD_48G-f2fs-disk_rd-9000-performance/ivb44
    107506 ±  9%         7%     114869        aim7/1BRD_48G-f2fs-disk_rr-3000-performance/ivb44
    105642                      106835        aim7/1BRD_48G-f2fs-disk_rw-3000-performance/ivb44
     26900 ±  3%                 26442 ±  3%  aim7/1BRD_48G-f2fs-disk_src-3000-performance/ivb44
    117124 ±  3%                117678        aim7/1BRD_48G-f2fs-disk_wrt-3000-performance/ivb44
      3689                        3616        aim7/1BRD_48G-f2fs-sync_disk_rw-600-performance/ivb44
     70897                       72758        aim7/1BRD_48G-xfs-creat-clo-1500-performance/ivb44
    267649 ±  3%                270867        aim7/1BRD_48G-xfs-disk_cp-3000-performance/ivb44
    485217 ±  3%                489403        aim7/1BRD_48G-xfs-disk_rd-9000-performance/ivb44
    360451                      359042        aim7/1BRD_48G-xfs-disk_rr-3000-performance/ivb44
    338114                      336838        aim7/1BRD_48G-xfs-disk_rw-3000-performance/ivb44
     60130 ±  5%         4%      62663        aim7/1BRD_48G-xfs-disk_src-3000-performance/ivb44
    403144                      401476        aim7/1BRD_48G-xfs-disk_wrt-3000-performance/ivb44
     26327                       26513        aim7/1BRD_48G-xfs-sync_disk_rw-600-performance/ivb44

99091700659f4df9  1b5f2eb4a752e1fa7102f37545
----------------  --------------------------
      2117                        2138        GEO-MEAN fsmark.files_per_sec
      4325                        4379        fsmark/1x-1t-1BRD_32G-btrfs-4K-4G-fsyncBeforeClose-1fpd-performance/ivb43
      9466 ±  3%         4%       9804        fsmark/1x-1t-1BRD_32G-ext4-4K-4G-fsyncBeforeClose-1fpd-performance/ivb43
       433 ±  5%                   424        fsmark/1x-1t-1BRD_48G-btrfs-4M-40G-NoSync-performance/ivb44
       185 ±  6%         5%        194        fsmark/1x-1t-1BRD_48G-btrfs-4M-40G-fsyncBeforeClose-performance/ivb44
       368 ±  3%        -4%        355 ±  6%  fsmark/1x-1t-1BRD_48G-ext4-4M-40G-NoSync-performance/ivb44
       191                         191        fsmark/1x-1t-1BRD_48G-ext4-4M-40G-fsyncBeforeClose-performance/ivb44
       393 ±  4%                   397 ±  4%  fsmark/1x-1t-1BRD_48G-xfs-4M-40G-NoSync-performance/ivb44
       200                         201        fsmark/1x-1t-1BRD_48G-xfs-4M-40G-fsyncBeforeClose-performance/ivb44
       924              -3%        896 ±  3%  fsmark/1x-1t-1HDD-xfs-4K-400M-fsyncBeforeClose-1fpd-performance/ivb43
       488 ±  3%         6%        516        fsmark/1x-64t-1BRD_48G-btrfs-4M-40G-NoSync-performance/ivb44
       559                         564        fsmark/1x-64t-1BRD_48G-ext4-4M-40G-NoSync-performance/ivb44
      1130                        1111        fsmark/1x-64t-1BRD_48G-ext4-4M-40G-fsyncBeforeClose-performance/ivb44
       526 ±  7%         6%        557        fsmark/1x-64t-1BRD_48G-xfs-4M-40G-NoSync-performance/ivb44
      1583 ±  3%                  1620        fsmark/1x-64t-1BRD_48G-xfs-4M-40G-fsyncBeforeClose-performance/ivb44
     33202                       33208        fsmark/8-1SSD-16-ext4-8K-75G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     33889                       33784        fsmark/8-1SSD-16-ext4-9B-48G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     25576                       25509        fsmark/8-1SSD-32-xfs-9B-30G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
      9117                        9079        fsmark/8-1SSD-4-btrfs-8K-24G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     13288                       13261        fsmark/8-1SSD-4-btrfs-9B-16G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     18851 ± 11%        11%      21013        fsmark/8-1SSD-4-f2fs-8K-72G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4
     24343              -4%      23473 ±  4%  fsmark/8-1SSD-4-f2fs-9B-40G-fsyncBeforeClose-16d-256fpd-performance/lkp-hsw-ep4

Thanks,
Fengguang

  parent reply	other threads:[~2016-08-15 12:58 UTC|newest]

Thread overview: 219+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-09 14:33 [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression kernel test robot
2016-08-09 14:33 ` kernel test robot
2016-08-10 18:24 ` [lkp] " Linus Torvalds
2016-08-10 18:24   ` Linus Torvalds
2016-08-10 23:08   ` [lkp] " Dave Chinner
2016-08-10 23:08     ` Dave Chinner
2016-08-10 23:51     ` [lkp] " Linus Torvalds
2016-08-10 23:51       ` Linus Torvalds
2016-08-10 23:58       ` [LKP] [lkp] " Huang, Ying
2016-08-10 23:58         ` Huang, Ying
2016-08-11  0:11         ` [LKP] [lkp] " Huang, Ying
2016-08-11  0:11           ` Huang, Ying
2016-08-11  0:23           ` [LKP] [lkp] " Linus Torvalds
2016-08-11  0:23             ` Linus Torvalds
2016-08-11  0:33             ` [LKP] [lkp] " Huang, Ying
2016-08-11  0:33               ` Huang, Ying
2016-08-11  1:00               ` [LKP] [lkp] " Linus Torvalds
2016-08-11  1:00                 ` Linus Torvalds
2016-08-11  4:46                 ` [LKP] [lkp] " Dave Chinner
2016-08-11  4:46                   ` Dave Chinner
2016-08-15 17:22                   ` [LKP] [lkp] " Huang, Ying
2016-08-15 17:22                     ` Huang, Ying
2016-08-16  0:08                     ` [LKP] [lkp] " Dave Chinner
2016-08-16  0:08                       ` Dave Chinner
2016-08-11 15:57                 ` [LKP] [lkp] " Christoph Hellwig
2016-08-11 15:57                   ` Christoph Hellwig
2016-08-11 16:55                   ` [LKP] [lkp] " Linus Torvalds
2016-08-11 16:55                     ` Linus Torvalds
2016-08-11 17:51                     ` [LKP] [lkp] " Huang, Ying
2016-08-11 17:51                       ` Huang, Ying
2016-08-11 19:51                       ` [LKP] [lkp] " Linus Torvalds
2016-08-11 19:51                         ` Linus Torvalds
2016-08-11 20:00                         ` [LKP] [lkp] " Christoph Hellwig
2016-08-11 20:00                           ` Christoph Hellwig
2016-08-11 20:35                           ` [LKP] [lkp] " Linus Torvalds
2016-08-11 20:35                             ` Linus Torvalds
2016-08-11 22:16                             ` [LKP] [lkp] " Al Viro
2016-08-11 22:16                               ` Al Viro
2016-08-11 22:30                               ` [LKP] [lkp] " Linus Torvalds
2016-08-11 22:30                                 ` Linus Torvalds
2016-08-11 21:16                           ` [LKP] [lkp] " Huang, Ying
2016-08-11 21:16                             ` Huang, Ying
2016-08-11 21:40                             ` [LKP] [lkp] " Linus Torvalds
2016-08-11 21:40                               ` Linus Torvalds
2016-08-11 22:08                               ` [LKP] [lkp] " Christoph Hellwig
2016-08-11 22:08                                 ` Christoph Hellwig
2016-08-12  0:54                     ` [LKP] [lkp] " Dave Chinner
2016-08-12  0:54                       ` Dave Chinner
2016-08-12  2:23                       ` [LKP] [lkp] " Dave Chinner
2016-08-12  2:23                         ` Dave Chinner
2016-08-12  2:32                         ` [LKP] [lkp] " Linus Torvalds
2016-08-12  2:32                           ` Linus Torvalds
2016-08-12  2:52                         ` [LKP] [lkp] " Christoph Hellwig
2016-08-12  2:52                           ` Christoph Hellwig
2016-08-12  3:20                           ` [LKP] [lkp] " Linus Torvalds
2016-08-12  3:20                             ` Linus Torvalds
2016-08-12  4:16                             ` [LKP] [lkp] " Dave Chinner
2016-08-12  4:16                               ` Dave Chinner
2016-08-12  5:02                               ` [LKP] [lkp] " Linus Torvalds
2016-08-12  5:02                                 ` Linus Torvalds
2016-08-12  6:04                                 ` [LKP] [lkp] " Dave Chinner
2016-08-12  6:04                                   ` Dave Chinner
2016-08-12  6:29                                   ` [LKP] [lkp] " Ye Xiaolong
2016-08-12  6:29                                     ` Ye Xiaolong
2016-08-12  8:51                                     ` [LKP] [lkp] " Ye Xiaolong
2016-08-12  8:51                                       ` Ye Xiaolong
2016-08-12 10:02                                       ` [LKP] [lkp] " Dave Chinner
2016-08-12 10:02                                         ` Dave Chinner
2016-08-12 10:43                                         ` Fengguang Wu
2016-08-12 10:43                                           ` Fengguang Wu
2016-08-13  0:30                                         ` [LKP] [lkp] " Christoph Hellwig
2016-08-13  0:30                                           ` Christoph Hellwig
2016-08-13 21:48                                           ` [LKP] [lkp] " Christoph Hellwig
2016-08-13 21:48                                             ` Christoph Hellwig
2016-08-13 22:07                                             ` [LKP] [lkp] " Fengguang Wu
2016-08-13 22:07                                               ` Fengguang Wu
2016-08-13 22:15                                               ` [LKP] [lkp] " Christoph Hellwig
2016-08-13 22:15                                                 ` Christoph Hellwig
2016-08-13 22:51                                                 ` [LKP] [lkp] " Fengguang Wu
2016-08-13 22:51                                                   ` Fengguang Wu
2016-08-14 14:50                                                   ` [LKP] [lkp] " Fengguang Wu
2016-08-14 14:50                                                     ` Fengguang Wu
2016-08-14 16:17                                                     ` [LKP] [lkp] " Christoph Hellwig
2016-08-14 16:17                                                       ` Christoph Hellwig
2016-08-14 23:46                                                       ` [LKP] [lkp] " Dave Chinner
2016-08-14 23:46                                                         ` Dave Chinner
2016-08-14 23:57                                                       ` [LKP] [lkp] " Fengguang Wu
2016-08-14 23:57                                                         ` Fengguang Wu
2016-08-15 14:14                                                       ` [LKP] [lkp] " Fengguang Wu
2016-08-15 14:14                                                         ` Fengguang Wu
2016-08-15 21:22                                                         ` [LKP] [lkp] " Dave Chinner
2016-08-15 21:22                                                           ` Dave Chinner
2016-08-16 12:20                                                           ` [LKP] [lkp] " Fengguang Wu
2016-08-16 12:20                                                             ` Fengguang Wu
2016-08-15 20:30                                                       ` [LKP] [lkp] " Huang, Ying
2016-08-15 20:30                                                         ` Huang, Ying
2016-08-22 22:09                                                         ` [LKP] [lkp] " Huang, Ying
2016-08-22 22:09                                                           ` Huang, Ying
2016-09-26  6:25                                                           ` [LKP] [lkp] " Huang, Ying
2016-09-26  6:25                                                             ` Huang, Ying
2016-09-26 14:55                                                             ` [LKP] [lkp] " Christoph Hellwig
2016-09-26 14:55                                                               ` Christoph Hellwig
2016-09-27  0:52                                                               ` [LKP] [lkp] " Huang, Ying
2016-09-27  0:52                                                                 ` Huang, Ying
2016-08-16 13:25                                                       ` [LKP] [lkp] " Fengguang Wu
2016-08-16 13:25                                                         ` Fengguang Wu
2016-08-13 23:32                                           ` [LKP] [lkp] " Dave Chinner
2016-08-13 23:32                                             ` Dave Chinner
2016-08-12  2:27                       ` [LKP] [lkp] " Linus Torvalds
2016-08-12  2:27                         ` Linus Torvalds
2016-08-12  3:56                         ` [LKP] [lkp] " Dave Chinner
2016-08-12  3:56                           ` Dave Chinner
2016-08-12 18:03                           ` [LKP] [lkp] " Linus Torvalds
2016-08-12 18:03                             ` Linus Torvalds
2016-08-13 23:58                             ` [LKP] [lkp] " Fengguang Wu
2016-08-13 23:58                               ` Fengguang Wu
2016-08-15  0:48                             ` [LKP] [lkp] " Dave Chinner
2016-08-15  0:48                               ` Dave Chinner
2016-08-15  1:37                               ` [LKP] [lkp] " Linus Torvalds
2016-08-15  1:37                                 ` Linus Torvalds
2016-08-15  2:28                                 ` [LKP] [lkp] " Dave Chinner
2016-08-15  2:28                                   ` Dave Chinner
2016-08-15  2:53                                   ` [LKP] [lkp] " Linus Torvalds
2016-08-15  2:53                                     ` Linus Torvalds
2016-08-15  5:00                                     ` [LKP] [lkp] " Dave Chinner
2016-08-15  5:00                                       ` Dave Chinner
     [not found]                                       ` <CA+55aFwva2Xffai+Eqv1Jn_NGryk3YJ2i5JoHOQnbQv6qVPAsw@mail.gmail.com>
     [not found]                                         ` <CA+55aFy14nUnJQ_GdF=j8Fa9xiH70c6fY2G3q5HQ01+8z1z3qQ@mail.gmail.com>
2016-08-15  5:12                                           ` Linus Torvalds
2016-08-15 22:22                                             ` [LKP] [lkp] " Dave Chinner
2016-08-15 22:22                                               ` Dave Chinner
2016-08-15 22:42                                               ` [LKP] [lkp] " Dave Chinner
2016-08-15 22:42                                                 ` Dave Chinner
2016-08-15 23:20                                                 ` [LKP] [lkp] " Linus Torvalds
2016-08-15 23:20                                                   ` Linus Torvalds
2016-08-15 23:48                                                   ` [LKP] [lkp] " Linus Torvalds
2016-08-15 23:48                                                     ` Linus Torvalds
2016-08-16  0:44                                                     ` [LKP] [lkp] " Dave Chinner
2016-08-16  0:44                                                       ` Dave Chinner
2016-08-16 15:05                                                     ` [LKP] [lkp] " Mel Gorman
2016-08-16 15:05                                                       ` Mel Gorman
2016-08-16 17:47                                                       ` [LKP] [lkp] " Linus Torvalds
2016-08-16 17:47                                                         ` Linus Torvalds
2016-08-17 15:48                                                         ` [LKP] [lkp] " Michal Hocko
2016-08-17 15:48                                                           ` Michal Hocko
2016-08-17 16:42                                                           ` [LKP] [lkp] " Michal Hocko
2016-08-17 16:42                                                             ` Michal Hocko
2016-08-17 15:49                                                         ` [LKP] [lkp] " Mel Gorman
2016-08-17 15:49                                                           ` Mel Gorman
2016-08-18  0:45                                                           ` [LKP] [lkp] " Mel Gorman
2016-08-18  0:45                                                             ` Mel Gorman
2016-08-18  7:11                                                             ` [LKP] [lkp] " Dave Chinner
2016-08-18  7:11                                                               ` Dave Chinner
2016-08-18 13:24                                                               ` [LKP] [lkp] " Mel Gorman
2016-08-18 13:24                                                                 ` Mel Gorman
2016-08-18 17:55                                                                 ` [LKP] [lkp] " Linus Torvalds
2016-08-18 17:55                                                                   ` Linus Torvalds
2016-08-18 21:19                                                                   ` [LKP] [lkp] " Dave Chinner
2016-08-18 21:19                                                                     ` Dave Chinner
2016-08-18 22:25                                                                     ` [LKP] [lkp] " Linus Torvalds
2016-08-18 22:25                                                                       ` Linus Torvalds
2016-08-19  9:00                                                                       ` [LKP] [lkp] " Michal Hocko
2016-08-19  9:00                                                                         ` Michal Hocko
2016-08-19 10:49                                                                       ` [LKP] [lkp] " Mel Gorman
2016-08-19 10:49                                                                         ` Mel Gorman
2016-08-19 23:48                                                                         ` [LKP] [lkp] " Dave Chinner
2016-08-19 23:48                                                                           ` Dave Chinner
2016-08-20  1:08                                                                           ` [LKP] [lkp] " Linus Torvalds
2016-08-20  1:08                                                                             ` Linus Torvalds
2016-08-20 12:16                                                                           ` [LKP] [lkp] " Mel Gorman
2016-08-20 12:16                                                                             ` Mel Gorman
2016-08-19 15:08                                                               ` [LKP] [lkp] " Mel Gorman
2016-08-19 15:08                                                                 ` Mel Gorman
2016-09-01 23:32                                                                 ` [LKP] [lkp] " Dave Chinner
2016-09-01 23:32                                                                   ` Dave Chinner
2016-09-06 15:37                                                                   ` [LKP] [lkp] " Mel Gorman
2016-09-06 15:37                                                                     ` Mel Gorman
2016-09-06 15:52                                                                     ` [LKP] [lkp] " Huang, Ying
2016-09-06 15:52                                                                       ` Huang, Ying
2016-08-24 15:40                                                             ` [LKP] [lkp] " Huang, Ying
2016-08-24 15:40                                                               ` Huang, Ying
2016-08-25  9:37                                                               ` [LKP] [lkp] " Mel Gorman
2016-08-25  9:37                                                                 ` Mel Gorman
2016-08-18  2:44                                                           ` [LKP] [lkp] " Dave Chinner
2016-08-18  2:44                                                             ` Dave Chinner
2016-08-16  0:15                                                   ` [LKP] [lkp] " Linus Torvalds
2016-08-16  0:15                                                     ` Linus Torvalds
2016-08-16  0:38                                                     ` [LKP] [lkp] " Dave Chinner
2016-08-16  0:38                                                       ` Dave Chinner
2016-08-16  0:50                                                       ` [LKP] [lkp] " Linus Torvalds
2016-08-16  0:50                                                         ` Linus Torvalds
2016-08-16  0:19                                                   ` [LKP] [lkp] " Dave Chinner
2016-08-16  0:19                                                     ` Dave Chinner
2016-08-16  1:51                                                     ` [LKP] [lkp] " Linus Torvalds
2016-08-16  1:51                                                       ` Linus Torvalds
2016-08-16 22:02                                                       ` [LKP] [lkp] " Dave Chinner
2016-08-16 22:02                                                         ` Dave Chinner
2016-08-16 23:23                                                         ` [LKP] [lkp] " Linus Torvalds
2016-08-16 23:23                                                           ` Linus Torvalds
2016-08-15 23:01                                               ` [LKP] [lkp] " Linus Torvalds
2016-08-15 23:01                                                 ` Linus Torvalds
2016-08-16  0:17                                                 ` [LKP] [lkp] " Dave Chinner
2016-08-16  0:17                                                   ` Dave Chinner
2016-08-16  0:45                                                   ` [LKP] [lkp] " Linus Torvalds
2016-08-16  0:45                                                     ` Linus Torvalds
2016-08-15  5:03                                     ` [LKP] [lkp] " Ingo Molnar
2016-08-15  5:03                                       ` Ingo Molnar
2016-08-17 16:24                                       ` [LKP] [lkp] " Peter Zijlstra
2016-08-17 16:24                                         ` Peter Zijlstra
2016-08-15 12:58                             ` Fengguang Wu [this message]
2016-08-15 12:58                               ` Fengguang Wu
2016-08-11  1:16               ` [LKP] [lkp] " Dave Chinner
2016-08-11  1:16                 ` Dave Chinner
2016-08-11  1:32                 ` [LKP] [lkp] " Dave Chinner
2016-08-11  1:32                   ` Dave Chinner
2016-08-11  2:36                   ` [LKP] [lkp] " Ye Xiaolong
2016-08-11  2:36                     ` Ye Xiaolong
2016-08-11  3:05                     ` [LKP] [lkp] " Dave Chinner
2016-08-11  3:05                       ` Dave Chinner
2016-08-12  1:26                 ` [LKP] [lkp] " Dave Chinner
2016-08-12  1:26                   ` Dave Chinner

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