• Bob Peterson's avatar
    GFS2: optimize rbm_from_block wrt bi_start · 6aa7640f
    Bob Peterson authored
    In function gfs2_rbm_from_block, it starts by checking if the block
    falls within the first bitmap. It does so by checking if the rbm's
    offset is less than (rbm->bi->bi_start + rbm->bi->bi_len) * GFS2_NBBY.
    However, the first bitmap will always have bi_start==0. Therefore
    this is an unnecessary calculation in a function that gets called
    billions of times. This patch removes the reference to bi_start.
    Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>