slub: Fallback to minimal order during slab page allocation

[linux-2.6-omap-h63xx.git] / include / linux / lm_interface.h

diff --git a/include/linux/lm_interface.h b/include/linux/lm_interface.h
index 1418fdc9ac0261b4bccb38e146cf94a895de4983..f274997bc2832fb9d8cf0c4e6d0ee2d5858d61e9 100644 (file)
--- a/include/linux/lm_interface.h
+++ b/include/linux/lm_interface.h
@@ -21,9 +21,15 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
  * modify the filesystem.  The lock module shouldn't assign a journal to the FS
  * mount.  It shouldn't send recovery callbacks to the FS mount.  If the node
  * dies or withdraws, all locks can be wiped immediately.
+ *
+ * LM_MFLAG_CONV_NODROP
+ * Do not allow the dlm to internally resolve conversion deadlocks by demoting
+ * the lock to unlocked and then reacquiring it in the requested mode. Instead,
+ * it should cancel the request and return LM_OUT_CONV_DEADLK.
  */
 
 #define LM_MFLAG_SPECTATOR     0x00000001
+#define LM_MFLAG_CONV_NODROP   0x00000002
 
 /*
  * lm_lockstruct flags
@@ -110,6 +116,9 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
  *
  * LM_OUT_ASYNC
  * The result of the request will be returned in an LM_CB_ASYNC callback.
+ *
+ * LM_OUT_CONV_DEADLK
+ * The lock request was canceled do to a conversion deadlock.
  */
 
 #define LM_OUT_ST_MASK         0x00000003
@@ -117,6 +126,7 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
 #define LM_OUT_CANCELED                0x00000008
 #define LM_OUT_ASYNC           0x00000080
 #define LM_OUT_ERROR           0x00000100
+#define LM_OUT_CONV_DEADLK     0x00000200
 
 /*
  * lm_callback_t types