LU-3321 osc: Adjustment on osc LRU for performance

[fs/lustre-release.git] / libcfs / include / libcfs / list.h

diff --git a/libcfs/include/libcfs/list.h b/libcfs/include/libcfs/list.h
index b747804..404d08a 100644 (file)
--- a/libcfs/include/libcfs/list.h
+++ b/libcfs/include/libcfs/list.h
@@ -46,6 +46,7 @@ typedef struct list_head cfs_list_t;
 
 #define __cfs_list_splice(list, head)        __list_splice(list, head)
 #define cfs_list_splice(list, head)          list_splice(list, head)
+#define cfs_list_splice_tail(list, head)     list_splice_tail(list, head)
 
 #define cfs_list_splice_init(list, head)     list_splice_init(list, head)
 
@@ -305,6 +306,12 @@ static inline void cfs_list_splice(cfs_list_t *list,
                __cfs_list_splice(list, head);
 }
 
+static inline void cfs_list_splice_tail(cfs_list_t *list, cfs_list_t *head)
+{
+       if (!cfs_list_empty(list))
+               __cfs_list_splice(list, head->prev);
+}
+
 /**
  * Join two lists and reinitialise the emptied list.
  * \param list the new list to add.