dlm: allow multiple lockspace creates

Add a count for lockspace create and release so that create can
be called multiple times to use the lockspace from different places.
Also add the new flag DLM_LSFL_NEWEXCL to create a lockspace with
the previous behavior of returning -EEXIST if the lockspace already
exists.

Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index 09d78c216f48..0c4cbe6c8285 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -144,7 +144,8 @@ static int gdlm_mount(char *table_name, char *host_data,
 
         error = dlm_new_lockspace(ls->fsname, strlen(ls->fsname),
                                   &ls->dlm_lockspace,
-                                  DLM_LSFL_FS | (nodir ? DLM_LSFL_NODIR : 0),
+                                  DLM_LSFL_FS | DLM_LSFL_NEWEXCL |
+                                  (nodir ? DLM_LSFL_NODIR : 0),
                                   GDLM_LVB_SIZE);
         if (error) {
                 log_error("dlm_new_lockspace error %d", error);