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From: tang.junhui@zte.com.cn
To: christophe.varoqui@opensvc.com, hare@suse.de,
	bmarzins@redhat.com, mwilck@suse.com, bart.vanassche@sandisk.com
Cc: zhang.kai16@zte.com.cn, dm-devel@redhat.com,
	tang.junhui@zte.com.cn, tang.wenjun3@zte.com.cn
Subject: [PATCH 03/12] libmultipath: add two list iteration macros
Date: Tue, 27 Dec 2016 16:03:20 +0800	[thread overview]
Message-ID: <1482825809-9528-4-git-send-email-tang.junhui@zte.com.cn> (raw)
In-Reply-To: <1482825809-9528-1-git-send-email-tang.junhui@zte.com.cn>

From: tang.junhui <tang.junhui@zte.com.cn>

Add two list iteration macros, they are used to iterate list forwards
or backwards from the given begin node to the given end node, which
would be used in merging uevents.

Change-Id: I8bb53fef9276bb62a5e0f4fdac6455086dc03d9b
Signed-off-by: tang.junhui <tang.junhui@zte.com.cn>
---
 libmultipath/list.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/libmultipath/list.h b/libmultipath/list.h
index ceaa381..e728ff0 100644
--- a/libmultipath/list.h
+++ b/libmultipath/list.h
@@ -294,6 +294,18 @@ static inline void list_splice_tail_init(struct list_head *list,
 	     pos = list_entry(pos->member.next, typeof(*pos), member))
 
 /**
+ * list_for_some_entry	-	iterate list of given interval
+ * @pos:	the type * to use as a loop counter.
+ * @from:	the begin node of the iteration.
+ * @to:		the end node of the iteration.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_some_entry(pos, from, to, member)				\
+	for (pos = list_entry((from)->next, typeof(*pos), member);	\
+	     &pos->member != (to);					\
+	     pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
  * list_for_each_entry_reverse - iterate backwards over list of given type.
  * @pos:	the type * to use as a loop counter.
  * @head:	the head for your list.
@@ -305,6 +317,18 @@ static inline void list_splice_tail_init(struct list_head *list,
 	     pos = list_entry(pos->member.prev, typeof(*pos), member))
 
 /**
+ * list_for_some_entry_reverse	-	iterate backwards list of given interval
+ * @pos:	the type * to use as a loop counter.
+ * @from:	the begin node of the iteration.
+ * @to:		the end node of the iteration.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_some_entry_reverse(pos, from, to, member)			\
+	for (pos = list_entry((from)->prev, typeof(*pos), member);	\
+	     &pos->member != (to);					\
+	     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 counter.
  * @n:		another type * to use as temporary storage
-- 
2.8.1.windows.1

  parent reply	other threads:[~2016-12-27  8:03 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-27  8:03 [PATCH 00/12] multipath-tools: improve processing efficiency for addition and deletion of multipath devices tang.junhui
2016-12-27  8:03 ` [PATCH 01/12] libmultipath: add wwid for "struct uevent" to record wwid of uevent tang.junhui
2017-01-03 22:02   ` Benjamin Marzinski
2017-01-04  6:56     ` tang.junhui
2017-01-04 18:14       ` Benjamin Marzinski
2017-01-04 20:33         ` Martin Wilck
2017-01-05  3:00           ` Benjamin Marzinski
2017-01-05  3:10         ` tang.junhui
2017-01-05 17:36           ` Benjamin Marzinski
2017-01-06  0:59             ` tang.junhui
2017-01-06 16:02               ` Benjamin Marzinski
2017-01-09  7:22                 ` tang.junhui
2016-12-27  8:03 ` [PATCH 02/12] libmultipath: add merge_node for "struct uevent" to record nodes of merged uevents tang.junhui
2016-12-27  8:03 ` tang.junhui [this message]
2016-12-27  8:03 ` [PATCH 04/12] multipathd: add need_do_map to indicate whether need calling domap() in ev_add_path() tang.junhui
2016-12-27  8:03 ` [PATCH 05/12] multipathd: add need_do_map to indicate whether need calling domap() in ev_remove_path() tang.junhui
2016-12-27  8:03 ` [PATCH 06/12] multipathd: move uev_discard() to uevent.c and change its name to uevent_can_discard() tang.junhui
2016-12-27  8:03 ` [PATCH 07/12] multipathd: move calling filter_devnode() from uev_trigger() " tang.junhui
2016-12-27  8:03 ` [PATCH 08/12] libmultipath: wait one seconds for more uevents in uevent_listen() in uevents burst situations tang.junhui
2016-12-28 20:25   ` Martin Wilck
2016-12-29  0:48     ` tang.junhui
2017-01-03 22:31   ` Benjamin Marzinski
2017-01-04  7:32     ` tang.junhui
2016-12-27  8:03 ` [PATCH 09/12] multipathd: merge uevents before proccessing tang.junhui
2017-01-04  0:30   ` Benjamin Marzinski
2017-01-04  3:29     ` tang.junhui
2016-12-27  8:03 ` [PATCH 10/12] libmultipath: filter " tang.junhui
2017-01-04  1:21   ` Benjamin Marzinski
2017-01-04  2:03     ` tang.junhui
2016-12-27  8:03 ` [PATCH 11/12] multipathd: proccess merged uevents tang.junhui
2017-01-04  1:03   ` Benjamin Marzinski
2017-01-04  1:54     ` tang.junhui
2016-12-27  8:03 ` [PATCH 12/12] libmultipath: use existing wwid when wwid has already been existed in uevent tang.junhui

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