linux-kernel - [PATCH 06/11] writeback: move struct wb_writeback

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Date:	Thu,  5 Jan 2012 15:42:49 -0800
From:	Tejun Heo <tj@...nel.org>
To:	axboe@...nel.dk, mingo@...hat.com, rostedt@...dmis.org,
	fweisbec@...il.com, teravest@...gle.com, slavapestov@...gle.com,
	ctalbott@...gle.com, dsharp@...gle.com
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: [PATCH 06/11] writeback: move struct wb_writeback_work to writeback.h

Move definition of struct wb_writeback_work from fs/fs-writeback.c to
include/linux/writeback.h.  This is to allow accessing fields from
writeback tracepoint probes which live outside fs-writeback.c.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 fs/fs-writeback.c         |   18 ------------------
 include/linux/writeback.h |   18 ++++++++++++++++++
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index ac86f8b..68cba85 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -29,24 +29,6 @@
 #include <linux/tracepoint.h>
 #include "internal.h"
 
-/*
- * Passed into wb_writeback(), essentially a subset of writeback_control
- */
-struct wb_writeback_work {
-	long nr_pages;
-	struct super_block *sb;
-	unsigned long *older_than_this;
-	enum writeback_sync_modes sync_mode;
-	unsigned int tagged_writepages:1;
-	unsigned int for_kupdate:1;
-	unsigned int range_cyclic:1;
-	unsigned int for_background:1;
-	enum wb_reason reason;		/* why was writeback initiated? */
-
-	struct list_head list;		/* pending work list */
-	struct completion *done;	/* set if the caller waits */
-};
-
 const char *wb_reason_name[] = {
 	[WB_REASON_BACKGROUND]		= "background",
 	[WB_REASON_TRY_TO_FREE_PAGES]	= "try_to_free_pages",
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index a378c29..10d22d1 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -82,6 +82,24 @@ struct writeback_control {
 };
 
 /*
+ * Passed into wb_writeback(), essentially a subset of writeback_control
+ */
+struct wb_writeback_work {
+	long nr_pages;
+	struct super_block *sb;
+	unsigned long *older_than_this;
+	enum writeback_sync_modes sync_mode;
+	unsigned int tagged_writepages:1;
+	unsigned int for_kupdate:1;
+	unsigned int range_cyclic:1;
+	unsigned int for_background:1;
+	enum wb_reason reason;		/* why was writeback initiated? */
+
+	struct list_head list;		/* pending work list */
+	struct completion *done;	/* set if the caller waits */
+};
+
+/*
  * fs/fs-writeback.c
  */	
 struct bdi_writeback;
-- 
1.7.3.1

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