• Josef Bacik's avatar
    Btrfs: finish ordered extents in their own thread · 5fd02043
    Josef Bacik authored
    We noticed that the ordered extent completion doesn't really rely on having
    a page and that it could be done independantly of ending the writeback on a
    page.  This patch makes us not do the threaded endio stuff for normal
    buffered writes and direct writes so we can end page writeback as soon as
    possible (in irq context) and only start threads to do the ordered work when
    it is actually done.  Compression needs to be reworked some to take
    advantage of this as well, but atm it has to do a find_get_page in its endio
    handler so it must be done in its own thread.  This makes direct writes
    quite a bit faster.  Thanks,
    Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
    5fd02043
disk-io.c 99.3 KB