dlm: move plock code from gfs2

Move the code that handles cluster posix locks from gfs2 into the dlm
so that it can be used by both gfs2 and ocfs2.

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

1 files changed, 21 insertions, 0 deletions

diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index f2efff424224..470bdf650b50 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -236,6 +236,27 @@ static void gdlm_withdraw(void *lockspace)
         gdlm_kobject_release(ls);
 }
 
+static int gdlm_plock(void *lockspace, struct lm_lockname *name,
+               struct file *file, int cmd, struct file_lock *fl)
+{
+        struct gdlm_ls *ls = lockspace;
+        return dlm_posix_lock(ls->dlm_lockspace, name->ln_number, file, cmd, fl);
+}
+
+static int gdlm_punlock(void *lockspace, struct lm_lockname *name,
+                 struct file *file, struct file_lock *fl)
+{
+        struct gdlm_ls *ls = lockspace;
+        return dlm_posix_unlock(ls->dlm_lockspace, name->ln_number, file, fl);
+}
+
+static int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
+                   struct file *file, struct file_lock *fl)
+{
+        struct gdlm_ls *ls = lockspace;
+        return dlm_posix_get(ls->dlm_lockspace, name->ln_number, file, fl);
+}
+
 const struct lm_lockops gdlm_ops = {
         .lm_proto_name = "lock_dlm",
         .lm_mount = gdlm_mount,