[RBTREE] Update JFFS2 to use rb_parent() accessor macro.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

2 files changed, 9 insertions, 10 deletions

diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 23a67bb3052f..131b67b6c350 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -299,7 +299,6 @@ static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
         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)
 #define frag_parent(frag) rb_entry(rb_parent(&(frag)->rb), struct jffs2_node_frag, rb)
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index f1695642d0f7..6f4a7d846e8c 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -66,7 +66,7 @@ static void jffs2_free_tmp_dnode_info_list(struct rb_root *list)
                         jffs2_free_full_dnode(tn->fn);
                         jffs2_free_tmp_dnode_info(tn);
 
-                        this = this->rb_parent;
+                        this = rb_parent(this);
                         if (!this)
                                 break;
 
@@ -679,12 +679,12 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                         jffs2_mark_node_obsolete(c, fn->raw);
 
                 BUG_ON(rb->rb_left);
-                if (rb->rb_parent && rb->rb_parent->rb_left == rb) {
+                if (rb_parent(rb) && rb_parent(rb)->rb_left == rb) {
                         /* We were then left-hand child of our parent. We need
                          * to move our own right-hand child into our place. */
                         repl_rb = rb->rb_right;
                         if (repl_rb)
-                                repl_rb->rb_parent = rb->rb_parent;
+                                rb_set_parent(repl_rb, rb_parent(rb));
                 } else
                         repl_rb = NULL;
 
@@ -692,14 +692,14 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 
                 /* Remove the spent tn from the tree; don't bother rebalancing
                  * but put our right-hand child in our own place. */
-                if (tn->rb.rb_parent) {
-                        if (tn->rb.rb_parent->rb_left == &tn->rb)
-                                tn->rb.rb_parent->rb_left = repl_rb;
-                        else if (tn->rb.rb_parent->rb_right == &tn->rb)
-                                tn->rb.rb_parent->rb_right = repl_rb;
+                if (rb_parent(&tn->rb)) {
+                        if (rb_parent(&tn->rb)->rb_left == &tn->rb)
+                                rb_parent(&tn->rb)->rb_left = repl_rb;
+                        else if (rb_parent(&tn->rb)->rb_right == &tn->rb)
+                                rb_parent(&tn->rb)->rb_right = repl_rb;
                         else BUG();
                 } else if (tn->rb.rb_right)
-                        tn->rb.rb_right->rb_parent = NULL;
+                        rb_set_parent(tn->rb.rb_right, NULL);
 
                 jffs2_free_tmp_dnode_info(tn);
                 if (ret) {