2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Jeff Layton commit 20d5a39929232a715f29e6cb7e3f0d0c790f41eb upstream. 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: Jeff Layton Signed-off-by: David Teigland Signed-off-by: Greg Kroah-Hartman --- fs/dlm/plock.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -304,7 +304,9 @@ int dlm_posix_get(dlm_lockspace_t *locks if (rv == -ENOENT) rv = 0; else if (rv > 0) { + locks_init_lock(fl); fl->fl_type = (op->info.ex) ? F_WRLCK : F_RDLCK; + fl->fl_flags = FL_POSIX; fl->fl_pid = op->info.pid; fl->fl_start = op->info.start; fl->fl_end = op->info.end; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/