• Joonsoo Kim's avatar
    mm/page_owner: set correct gfp_mask on page_owner · e2cfc911
    Joonsoo Kim authored
    Currently, we set wrong gfp_mask to page_owner info in case of isolated
    freepage by compaction and split page.  It causes incorrect mixed
    pageblock report that we can get from '/proc/pagetypeinfo'.  This metric
    is really useful to measure fragmentation effect so should be accurate.
    This patch fixes it by setting correct information.
    Without this patch, after kernel build workload is finished, number of
    mixed pageblock is 112 among roughly 210 movable pageblocks.
    But, with this fix, output shows that mixed pageblock is just 57.
    Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
    Cc: Mel Gorman <mgorman@suse.de>
    Cc: Vlastimil Babka <vbabka@suse.cz>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
page_owner.c 7.08 KB