tree f49edd4acf4963eb3377fd3a700982081970ba14
parent 4c60117811171d867d4f27f17ea07d7419d45dae
author Wolfram Strepp <wstrepp@gmx.de> 1245191653 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1245206876 -0700

rb_tree: remove redundant if()-condition in rb_erase()

Furthermore, notice that the initial checks:

	if (!node->rb_left)
		child = node->rb_right;
	else if (!node->rb_right)
		child = node->rb_left;
	else
	{
		...
	}
guarantee that old->rb_right is set in the final else branch, therefore
we can omit checking that again.

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