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    memcg: don't initialize kmem-cache destroying work for root caches · f101a946
    Andrey Vagin 提交于
    struct memcg_cache_params has a union.  Different parts of this union
    are used for root and non-root caches.  A part with destroying work is
    used only for non-root caches.
    
      BUG: unable to handle kernel paging request at 0000000fffffffe0
      IP: kmem_cache_alloc+0x41/0x1f0
      Modules linked in: netlink_diag af_packet_diag udp_diag tcp_diag inet_diag unix_diag ip6table_filter ip6_tables i2c_piix4 virtio_net virtio_balloon microcode i2c_core pcspkr floppy
      CPU: 0 PID: 1929 Comm: lt-vzctl Tainted: G      D      3.10.0-rc1+ #2
      Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
      RIP: kmem_cache_alloc+0x41/0x1f0
      Call Trace:
       getname_flags.part.34+0x30/0x140
       getname+0x38/0x60
       do_sys_open+0xc5/0x1e0
       SyS_open+0x22/0x30
       system_call_fastpath+0x16/0x1b
      Code: f4 53 48 83 ec 18 8b 05 8e 53 b7 00 4c 8b 4d 08 21 f0 a8 10 74 0d 4c 89 4d c0 e8 1b 76 4a 00 4c 8b 4d c0 e9 92 00 00 00 4d 89 f5 <4d> 8b 45 00 65 4c 03 04 25 48 cd 00 00 49 8b 50 08 4d 8b 38 49
      RIP  [<ffffffff8116b641>] kmem_cache_alloc+0x41/0x1f0
    Signed-off-by: NAndrey Vagin <avagin@openvz.org>
    Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
    Cc: Glauber Costa <glommer@parallels.com>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Cc: Balbir Singh <bsingharora@gmail.com>
    Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Reviewed-by: NMichal Hocko <mhocko@suse.cz>
    Cc: Li Zefan <lizefan@huawei.com>
    Cc: <stable@vger.kernel.org>	[3.9.x]
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    f101a946
memcontrol.c 185.0 KB