• Jeff Layton's avatar
    dlm: initialize file_lock struct in GETLK before copying conflicting lock · 20d5a399
    Jeff Layton authored
    dlm_posix_get fills out the relevant fields in the file_lock before
    returning when there is a lock conflict, but doesn't clean out any of
    the other fields in the file_lock.
    
    When nfsd does a NFSv4 lockt call, it sets the fl_lmops to
    nfsd_posix_mng_ops before calling the lower fs. When the lock comes back
    after testing a lock on GFS2, it still has that field set. This confuses
    nfsd into thinking that the file_lock is a nfsd4 lock.
    
    Fix this by making DLM reinitialize the file_lock before copying the
    fields from the conflicting lock.
    Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
    Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
    20d5a399
plock.c 9.76 KB