linux-kernel - [PATCH v6 5/10] rbtree.h: add doc comments for struct rb

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Date:	Fri, 28 Sep 2012 18:40:20 -0500
From:	Daniel Santos <daniel.santos@...ox.com>
To:	LKML <linux-kernel@...r.kernel.org>,
	Akinobu Mita <akinobu.mita@...il.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Santos <daniel.santos@...ox.com>,
	David Woodhouse <David.Woodhouse@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	John Stultz <john.stultz@...aro.org>,
	linux-doc@...r.kernel.org, Michel Lespinasse <walken@...gle.com>,
	"Paul E. McKenney" <paul.mckenney@...aro.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Pavel Pisa <pisa@....felk.cvut.cz>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rik van Riel <riel@...hat.com>, Rob Landley <rob@...dley.net>
Subject: [PATCH v6 5/10] rbtree.h: add doc comments for struct rb_node

Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
---
 include/linux/rbtree.h |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 5f10915..c815b5e 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -35,6 +35,20 @@
 #include <linux/bug.h>
 #include <linux/kconfig.h>
 
+/**
+ * struct rb_node
+ * @__rb_parent_color: Contains the color in the lower 2 bits (although only
+ * 		       bit zero is currently used) and the address of the
+ * 		       parent in the rest (lower 2 bits of address should
+ * 		       always be zero on any arch supported).  If the node is
+ * 		       initialized and not a member of any tree, the parent
+ * 		       point to its self.  If the node belongs to a tree, but
+ * 		       is the root element, the parent will be NULL.
+ * 		       Otherwise, parent will always point to the parent node
+ * 		       in the tree.
+ * @rb_right:          Pointer to the right element.
+ * @rb_left:           Pointer to the left element.
+ */
 struct rb_node {
 	unsigned long  __rb_parent_color;
 	struct rb_node *rb_right;
-- 
1.7.3.4

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