• Eric Sandeen's avatar
    jbd: don't wake kjournald unnecessarily · 7e2fb2d7
    Eric Sandeen authored
    Don't send an extra wakeup to kjournald in the case where we
    already have the proper target in j_commit_request, i.e. that
    commit has already been requested for commit.
    
    commit d9b01934 "jbd: fix fsync() tid wraparound bug" changed
    the logic leading to a wakeup, but it caused some extra wakeups
    which were found to lead to a measurable performance regression.
    Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
    Signed-off-by: default avatarJan Kara <jack@suse.cz>
    7e2fb2d7
journal.c 57.2 KB