fix unused-function -Wall warnings

[tools/e2fsprogs.git] / lib / ext2fs / rbtree.h

diff --git a/lib/ext2fs/rbtree.h b/lib/ext2fs/rbtree.h
index 972297b..790f5c1 100644 (file)
--- a/lib/ext2fs/rbtree.h
+++ b/lib/ext2fs/rbtree.h
@@ -14,12 +14,12 @@
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
-  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 
   linux/include/linux/rbtree.h
 
   To use rbtrees you'll have to implement your own insert and search cores.
-  This will avoid us to use callbacks and to drop drammatically performances.
+  This will avoid us to use callbacks and to drop dramatically performances.
   I know it's not the cleaner way,  but in C (not in C++) to get
   performances and genericity...
 
@@ -95,21 +95,17 @@ static inline struct page * rb_insert_page_cache(struct inode * inode,
 #define        _LINUX_RBTREE_H
 
 #include <stdlib.h>
+#include <stdint.h>
+#include "compiler.h"
 
-#undef offsetof
-#ifdef __compiler_offsetof
-#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
-#else
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#if __GNUC_PREREQ (4, 6)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
 #endif
 
-#define container_of(ptr, type, member) ({                     \
-       const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
-       (type *)( (char *)__mptr - offsetof(type,member) );})
-
 struct rb_node
 {
-       unsigned long  rb_parent_color;
+       uintptr_t  rb_parent_color;
 #define        RB_RED          0
 #define        RB_BLACK        1
        struct rb_node *rb_right;
@@ -132,7 +128,7 @@ struct rb_root
 
 static inline void ext2fs_rb_set_parent(struct rb_node *rb, struct rb_node *p)
 {
-       rb->rb_parent_color = (rb->rb_parent_color & 3) | (unsigned long)p;
+       rb->rb_parent_color = (rb->rb_parent_color & 3) | (uintptr_t)p;
 }
 static inline void ext2fs_rb_set_color(struct rb_node *rb, int color)
 {
@@ -142,24 +138,27 @@ static inline void ext2fs_rb_set_color(struct rb_node *rb, int color)
 #define RB_ROOT        (struct rb_root) { NULL, }
 #define        ext2fs_rb_entry(ptr, type, member) container_of(ptr, type, member)
 
-#define EXT2FS_RB_EMPTY_ROOT(root)     ((root)->rb_node == NULL)
-#define EXT2FS_RB_EMPTY_NODE(node)     (ext2fs_rb_parent(node) == node)
-#define EXT2FS_RB_CLEAR_NODE(node)     (ext2fs_rb_set_parent(node, node))
+static inline int ext2fs_rb_empty_root(struct rb_root *root)
+{
+       return root->rb_node == NULL;
+}
 
-extern void ext2fs_rb_insert_color(struct rb_node *, struct rb_root *);
-extern void ext2fs_rb_erase(struct rb_node *, struct rb_root *);
+static inline int ext2fs_rb_empty_node(struct rb_node *node)
+{
+       return ext2fs_rb_parent(node) == node;
+}
 
-typedef void (*rb_augment_f)(struct rb_node *node, void *data);
+static inline void ext2fs_rb_clear_node(struct rb_node *node)
+{
+       ext2fs_rb_set_parent(node, node);
+}
 
-extern void ext2fs_rb_augment_insert(struct rb_node *node,
-                             rb_augment_f func, void *data);
-extern struct rb_node *ext2fs_rb_augment_erase_begin(struct rb_node *node);
-extern void ext2fs_rb_augment_erase_end(struct rb_node *node,
-                                rb_augment_f func, void *data);
+extern void ext2fs_rb_insert_color(struct rb_node *, struct rb_root *);
+extern void ext2fs_rb_erase(struct rb_node *, struct rb_root *);
 
 /* Find logical next and previous nodes in a tree */
-extern struct rb_node *ext2fs_rb_next(const struct rb_node *);
-extern struct rb_node *ext2fs_rb_prev(const struct rb_node *);
+extern struct rb_node *ext2fs_rb_next(struct rb_node *);
+extern struct rb_node *ext2fs_rb_prev(struct rb_node *);
 extern struct rb_node *ext2fs_rb_first(const struct rb_root *);
 extern struct rb_node *ext2fs_rb_last(const struct rb_root *);
 
@@ -171,10 +170,14 @@ static inline void ext2fs_rb_link_node(struct rb_node * node,
                                     struct rb_node * parent,
                                     struct rb_node ** rb_link)
 {
-       node->rb_parent_color = (unsigned long )parent;
+       node->rb_parent_color = (uintptr_t)parent;
        node->rb_left = node->rb_right = NULL;
 
        *rb_link = node;
 }
 
+#if __GNUC_PREREQ (4, 6)
+#pragma GCC diagnostic pop
+#endif
+
 #endif /* _LINUX_RBTREE_H */