Message ID | 20170617093253.3990-4-kpraveen.lkml@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Sat, 2017-06-17 at 15:02 +0530, Praveen Kumar wrote: > 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> > [Linux commit 16c047add3ceaf0ab882e3e094d1ec904d02312d] > > Ported to Xen. > > Signed-off-by: Praveen Kumar <kpraveen.lkml@gmail.com> > Reviewed-by: Dario Faggioli <dario.faggioli@citrix.com> Regards, Dario
diff --git a/xen/common/rbtree.c b/xen/common/rbtree.c index 70cb15f1fe..4b85fd492b 100644 --- a/xen/common/rbtree.c +++ b/xen/common/rbtree.c @@ -230,6 +230,16 @@ 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); @@ -246,15 +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);