• Bob Peterson's avatar
    GFS2: Don't add all glocks to the lru · e7ccaf5f
    Bob Peterson authored
    The glocks used for resource groups often come and go hundreds of
    thousands of times per second. Adding them to the lru list just
    adds unnecessary contention for the lru_lock spin_lock, especially
    considering we're almost certainly going to re-use the glock and
    take it back off the lru microseconds later. We never want the
    glock shrinker to cull them anyway. This patch adds a new bit in
    the glops that determines which glock types get put onto the lru
    list and which ones don't.
    Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
    Acked-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
glock.c 51.6 KB