X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=flist.h;h=5437cd80da85ab7581b2282f52669510ef682d20;hb=e1ce5b385c65803b170e512a1b5256bbe99f98f0;hp=95023c75aa1799732ea8f2ea99e64c3df4027644;hpb=e53ab27c7425241d64e8d64ad77850a776c01375;p=fio.git

diff --git a/flist.h b/flist.h
index 95023c75..5437cd80 100644
--- a/flist.h
+++ b/flist.h
@@ -1,15 +1,11 @@
 #ifndef _LINUX_FLIST_H
 #define _LINUX_FLIST_H
 
-#undef offsetof
-#ifdef __compiler_offsetof
-#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
-#else
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif
+#include <stdlib.h>
+#include <stddef.h>
 
-#define container_of(ptr, type, member) ({			\
-	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+#define container_of(ptr, type, member)  ({			\
+	const __typeof__( ((type *)0)->member ) *__mptr = (ptr);	\
 	(type *)( (char *)__mptr - offsetof(type,member) );})
 
 /*
@@ -138,6 +134,22 @@ static inline void flist_splice(const struct flist_head *list,
 		__flist_splice(list, head, head->next);
 }
 
+static inline void flist_splice_tail(struct flist_head *list,
+				     struct flist_head *head)
+{
+	if (!flist_empty(list))
+		__flist_splice(list, head->prev, head);
+}
+
+static inline void flist_splice_tail_init(struct flist_head *list,
+					  struct flist_head *head)
+{
+	if (!flist_empty(list)) {
+		__flist_splice(list, head->prev, head);
+		INIT_FLIST_HEAD(list);
+	}
+}
+
 static inline void flist_splice_init(struct flist_head *list,
 				    struct flist_head *head)
 {
@@ -156,6 +168,12 @@ static inline void flist_splice_init(struct flist_head *list,
 #define flist_entry(ptr, type, member) \
 	container_of(ptr, type, member)
 
+#define flist_first_entry(ptr, type, member) \
+	flist_entry((ptr)->next, type, member)
+
+#define flist_last_entry(ptr, type, member) \
+	flist_entry((ptr)->prev, type, member)
+
 /**
  * flist_for_each	-	iterate over a list
  * @pos:	the &struct flist_head to use as a loop counter.
@@ -174,4 +192,7 @@ static inline void flist_splice_init(struct flist_head *list,
 	for (pos = (head)->next, n = pos->next; pos != (head); \
 		pos = n, n = pos->next)
 
+extern void flist_sort(void *priv, struct flist_head *head,
+	int (*cmp)(void *priv, struct flist_head *a, struct flist_head *b));
+
 #endif