• Steven Whitehouse's avatar
    GFS2: Merge glock state fields into a bitfield · 47a25380
    Steven Whitehouse authored
    We can only merge the fields into a bitfield if the locking
    rules for them are the same. In this case gl_spin covers all
    of the fields (write side) but a couple of them are used
    with GLF_LOCK as the read side lock, which should be ok
    since we know that the field in question won't be changing
    at the time.
    The gl_req setting has to be done earlier (in glock.c) in order
    to place it under gl_spin. The gl_reply setting also has to be
    brought under gl_spin in order to comply with the new rules.
    This saves 4*sizeof(unsigned int) per glock.
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    Cc: Bob Peterson <rpeterso@redhat.com>
glock.c 47.1 KB