• Mel Gorman's avatar
    mm: compaction: make isolate_lru_page() filter-aware again · c8244935
    Mel Gorman authored
    Commit 39deaf85 ("mm: compaction: make isolate_lru_page() filter-aware")
    noted that compaction does not migrate dirty or writeback pages and that
    is was meaningless to pick the page and re-add it to the LRU list.  This
    had to be partially reverted because some dirty pages can be migrated by
    compaction without blocking.
    
    This patch updates "mm: compaction: make isolate_lru_page" by skipping
    over pages that migration has no possibility of migrating to minimise LRU
    disruption.
    Signed-off-by: default avatarMel Gorman <mgorman@suse.de>
    Reviewed-by: Rik van Riel<riel@redhat.com>
    Cc: Andrea Arcangeli <aarcange@redhat.com>
    Reviewed-by: default avatarMinchan Kim <minchan@kernel.org>
    Cc: Dave Jones <davej@redhat.com>
    Cc: Jan Kara <jack@suse.cz>
    Cc: Andy Isaacson <adi@hexapodia.org>
    Cc: Nai Xia <nai.xia@gmail.com>
    Cc: Johannes Weiner <jweiner@redhat.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    c8244935
compaction.c 19.8 KB