lkml.org 
[lkml]   [2007]   [Dec]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[RFC PATCH 3/5] Add list_for_each_entry_reverse_from()
Introduce list_for_each_entry_reverse_from() needed by a subsequent patch.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
---
include/linux/list.h | 13 +++++++++++++
1 file changed, 13 insertions(+)

--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -562,6 +562,19 @@ static inline void list_splice_init_rcu(
pos = list_entry(pos->member.next, typeof(*pos), member))

/**
+ * list_for_each_entry_reverse_from - iterate backwards over list of given
+ * type from the current point
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Iterate backwards over list of given type, continuing from current position.
+ */
+#define list_for_each_entry_reverse_from(pos, head, member) \
+ for (; prefetch(pos->member.prev), &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
* list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
* @pos: the type * to use as a loop cursor.
* @n: another type * to use as temporary storage

\
 
 \ /
  Last update: 2007-12-05 16:05    [W:1.036 / U:0.428 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site