linux-kernel - [PATCH 1/8] mm/writeback: fix wb_do

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Message-Id: <1371195041-26654-1-git-send-email-liwanp@linux.vnet.ibm.com>
Date:	Fri, 14 Jun 2013 15:30:34 +0800
From:	Wanpeng Li <liwanp@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Michal Hocko <mhocko@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Shewmaker <agshew@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Namjae Jeon <linkinjeon@...il.com>, Jan Kara <jack@...e.cz>,
	Tejun Heo <tj@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>
Subject: [PATCH 1/8] mm/writeback: fix wb_do_writeback exported unsafely

There is just one caller in fs-writeback.c call wb_do_writeback and
current codes unnecessary export it in header file, this patch fix
it by changing wb_do_writeback to static function.

Signed-off-by: Wanpeng Li <liwanp@...ux.vnet.ibm.com>
---
 fs/fs-writeback.c         | 2 +-
 include/linux/writeback.h | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 3be5718..f892dec 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -959,7 +959,7 @@ static long wb_check_old_data_flush(struct bdi_writeback *wb)
 /*
  * Retrieve work items and do the writeback they describe
  */
-long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
+static long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
 {
 	struct backing_dev_info *bdi = wb->bdi;
 	struct wb_writeback_work *work;
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 579a500..e27468e 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -94,7 +94,6 @@ int try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr,
 void sync_inodes_sb(struct super_block *);
 long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages,
 				enum wb_reason reason);
-long wb_do_writeback(struct bdi_writeback *wb, int force_wait);
 void wakeup_flusher_threads(long nr_pages, enum wb_reason reason);
 void inode_wait_for_writeback(struct inode *inode);
 
-- 
1.8.1.2

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