[JFFS2] Fix race in garbage collector
Fix the race problem described here:
http://lists.infradead.org/pipermail/linux-mtd/2005-April/012361.html
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 57f675c..a65539f 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.h,v 1.128 2005/02/27 23:01:32 dwmw2 Exp $
+ * $Id: nodelist.h,v 1.130 2005/04/09 10:46:59 dedekind Exp $
*
*/
@@ -363,6 +363,18 @@
node = node->rb_left;
return rb_entry(node, struct jffs2_node_frag, rb);
}
+
+static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
+{
+ struct rb_node *node = root->rb_node;
+
+ if (!node)
+ return NULL;
+ while(node->rb_right)
+ node = node->rb_right;
+ return rb_entry(node, struct jffs2_node_frag, rb);
+}
+
#define rb_parent(rb) ((rb)->rb_parent)
#define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb)
#define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb)