ocfs2: Use global DLM_ constants in generic code.

[linux-2.6-omap-h63xx.git] / fs / ocfs2 / stackglue.c

diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 4f44f23795f0994c2131ca36af3f7c6391f0c1ae..99538043fc17194d6d6e183354eae924cf7ec00d 100644 (file)
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -18,15 +18,65 @@
  * General Public License for more details.
  */
 
-#include <linux/types.h>
-#include <linux/list.h>
-
-#include "dlm/dlmapi.h"
-
 #include "stackglue.h"
 
 static struct ocfs2_locking_protocol *lproto;
 
+/* These should be identical */
+#if (DLM_LOCK_IV != LKM_IVMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_NL != LKM_NLMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_CR != LKM_CRMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_CW != LKM_CWMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_PR != LKM_PRMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_PW != LKM_PWMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_EX != LKM_EXMODE)
+# error Lock modes do not match
+#endif
+static inline int mode_to_o2dlm(int mode)
+{
+       BUG_ON(mode > LKM_MAXMODE);
+
+       return mode;
+}
+
+#define map_flag(_generic, _o2dlm)             \
+       if (flags & (_generic)) {               \
+               flags &= ~(_generic);           \
+               o2dlm_flags |= (_o2dlm);        \
+       }
+static int flags_to_o2dlm(u32 flags)
+{
+       int o2dlm_flags = 0;
+
+       map_flag(DLM_LKF_NOQUEUE, LKM_NOQUEUE);
+       map_flag(DLM_LKF_CANCEL, LKM_CANCEL);
+       map_flag(DLM_LKF_CONVERT, LKM_CONVERT);
+       map_flag(DLM_LKF_VALBLK, LKM_VALBLK);
+       map_flag(DLM_LKF_IVVALBLK, LKM_INVVALBLK);
+       map_flag(DLM_LKF_ORPHAN, LKM_ORPHAN);
+       map_flag(DLM_LKF_FORCEUNLOCK, LKM_FORCE);
+       map_flag(DLM_LKF_TIMEOUT, LKM_TIMEOUT);
+       map_flag(DLM_LKF_LOCAL, LKM_LOCAL);
+
+       /* map_flag() should have cleared every flag passed in */
+       BUG_ON(flags != 0);
+
+       return o2dlm_flags;
+}
+#undef map_flag
+
 enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm,
                   int mode,
                   struct dlm_lockstatus *lksb,
@@ -35,8 +85,12 @@ enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm,
                   unsigned int namelen,
                   void *astarg)
 {
+       int o2dlm_mode = mode_to_o2dlm(mode);
+       int o2dlm_flags = flags_to_o2dlm(flags);
+
        BUG_ON(lproto == NULL);
-       return dlmlock(dlm, mode, lksb, flags, name, namelen,
+
+       return dlmlock(dlm, o2dlm_mode, lksb, o2dlm_flags, name, namelen,
                       lproto->lp_lock_ast, astarg,
                       lproto->lp_blocking_ast);
 }
@@ -46,9 +100,12 @@ enum dlm_status ocfs2_dlm_unlock(struct dlm_ctxt *dlm,
                     u32 flags,
                     void *astarg)
 {
+       int o2dlm_flags = flags_to_o2dlm(flags);
+
        BUG_ON(lproto == NULL);
 
-       return dlmunlock(dlm, lksb, flags, lproto->lp_unlock_ast, astarg);
+       return dlmunlock(dlm, lksb, o2dlm_flags,
+                        lproto->lp_unlock_ast, astarg);
 }