linux-kernel - [PATCH 3.2 095/152] mm: remove unused arg of set_page_dirty

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Date:	Tue, 17 Feb 2015 01:46:53 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Miklos Szeredi" <mszeredi@...e.cz>
Subject: [PATCH 3.2 095/152] mm: remove unused arg of set_page_dirty_balance()

3.2.67-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Miklos Szeredi <mszeredi@...e.cz>

commit ed6d7c8e578331cad594ee70d60e2e146b5dce7b upstream.

There's only one caller of set_page_dirty_balance() and that will call it
with page_mkwrite == 0.

The page_mkwrite argument was unused since commit b827e496c893 "mm: close
page_mkwrite races".

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 include/linux/writeback.h | 2 +-
 mm/memory.c               | 2 +-
 mm/page-writeback.c       | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -190,7 +190,7 @@ int write_cache_pages(struct address_spa
 		      struct writeback_control *wbc, writepage_t writepage,
 		      void *data);
 int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
-void set_page_dirty_balance(struct page *page, int page_mkwrite);
+void set_page_dirty_balance(struct page *page);
 void writeback_set_ratelimit(void);
 void tag_pages_for_writeback(struct address_space *mapping,
 			     pgoff_t start, pgoff_t end);
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2671,7 +2671,7 @@ reuse:
 		 */
 		if (!page_mkwrite) {
 			wait_on_page_locked(dirty_page);
-			set_page_dirty_balance(dirty_page, page_mkwrite);
+			set_page_dirty_balance(dirty_page);
 		}
 		put_page(dirty_page);
 		if (page_mkwrite) {
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1202,9 +1202,9 @@ pause:
 		bdi_start_background_writeback(bdi);
 }
 
-void set_page_dirty_balance(struct page *page, int page_mkwrite)
+void set_page_dirty_balance(struct page *page)
 {
-	if (set_page_dirty(page) || page_mkwrite) {
+	if (set_page_dirty(page)) {
 		struct address_space *mapping = page_mapping(page);
 
 		if (mapping)

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