• Jeff Layton's avatar
    locks: report l_pid as -1 for FL_FILE_PVT locks · 3fd80cdd
    Jeff Layton authored
    FL_FILE_PVT locks are no longer tied to a particular pid, and are
    instead inheritable by child processes. Report a l_pid of '-1' for
    these sorts of locks since the pid is somewhat meaningless for them.
    
    This precedent comes from FreeBSD. There, POSIX and flock() locks can
    conflict with one another. If fcntl(F_GETLK, ...) returns a lock set
    with flock() then the l_pid member cannot be a process ID because the
    lock is not held by a process as such.
    Acked-by: default avatarJ. Bruce Fields <bfields@fieldses.org>
    Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
    3fd80cdd
locks.c 66.1 KB