linux-kernel - Re: [PATCH 2/2] mm: drop hotplug lock from lru_add_drain

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Date:   Sat, 4 Nov 2017 04:02:59 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     kbuild-all@...org, linux-mm@...ck.org,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Johannes Weiner <hannes@...xchg.org>,
        Mel Gorman <mgorman@...e.de>, Tejun Heo <tj@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH 2/2] mm: drop hotplug lock from lru_add_drain_all

Hi Michal,

I love your patch! Yet something to improve:

[auto build test ERROR on mmotm/master]
[also build test ERROR on next-20171103]
[cannot apply to v4.14-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Michal-Hocko/do-not-depend-on-cpuhotplug-logs-in-lru_add_drain_all/20171104-023818
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: i386-randconfig-s1-201744 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   mm/compaction.o: In function `sysctl_compaction_handler':
   compaction.c:(.text+0x18f0): undefined reference to `lru_add_drain_all'
   mm/mlock.o: In function `do_mlock':
   mlock.c:(.text+0x6f7): undefined reference to `lru_add_drain_all'
   mm/mlock.o: In function `SyS_mlockall':
   mlock.c:(.text+0xa20): undefined reference to `lru_add_drain_all'
   mm/ksm.o: In function `ksm_scan_thread':
>> ksm.c:(.text+0x139f): undefined reference to `lru_add_drain_all'
   mm/migrate.o: In function `migrate_prep':
>> migrate.c:(.text+0x92e): undefined reference to `lru_add_drain_all'
   fs/block_dev.o:block_dev.c:(.text+0x176): more undefined references to `lru_add_drain_all' follow

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0-DAY kernel test infrastructure                Open Source Technology Center
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