rb_tree: reorganize code in rb_erase() for additional changes

First, move some code around in order to make the next change more obvious.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wolfram Strepp <wstrepp@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/lib/rbtree.c b/lib/rbtree.c
index f653659e0bc..0455685f6a7 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -231,6 +231,15 @@ void rb_erase(struct rb_node *node, struct rb_root *root)
                 node = node->rb_right;
                 while ((left = node->rb_left) != NULL)
                         node = left;
+
+                if (rb_parent(old)) {
+                        if (rb_parent(old)->rb_left == old)
+                                rb_parent(old)->rb_left = node;
+                        else
+                                rb_parent(old)->rb_right = node;
+                } else
+                        root->rb_node = node;
+
                 child = node->rb_right;
                 parent = rb_parent(node);
                 color = rb_color(node);
@@ -247,15 +256,6 @@ void rb_erase(struct rb_node *node, struct rb_root *root)
                 node->rb_right = old->rb_right;
                 node->rb_left = old->rb_left;
 
-                if (rb_parent(old))
-                {
-                        if (rb_parent(old)->rb_left == old)
-                                rb_parent(old)->rb_left = node;
-                        else
-                                rb_parent(old)->rb_right = node;
-                } else
-                        root->rb_node = node;
-
                 rb_set_parent(old->rb_left, node);
                 if (old->rb_right)
                         rb_set_parent(old->rb_right, node);