• W
    mm: introduce dump_page() and print symbolic flag names · 718a3821
    Wu Fengguang 提交于
    - introduce dump_page() to print the page info for debugging some error
      condition.
    
    - convert three mm users: bad_page(), print_bad_pte() and memory offline
      failure.
    
    - print an extra field: the symbolic names of page->flags
    
    Example dump_page() output:
    
    [  157.521694] page:ffffea0000a7cba8 count:2 mapcount:1 mapping:ffff88001c901791 index:0x147
    [  157.525570] page flags: 0x100000000100068(uptodate|lru|active|swapbacked)
    Signed-off-by: NWu Fengguang <fengguang.wu@intel.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Alex Chiang <achiang@hp.com>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Andi Kleen <andi@firstfloor.org>
    Cc: Mel Gorman <mel@linux.vnet.ibm.com>
    Cc: Christoph Lameter <cl@linux-foundation.org>
    Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    718a3821
page_alloc.c 143.9 KB