linux-kernel - [PATCH] mm: remove unused arg of set_page_dirty

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Date:	Wed, 26 Mar 2014 17:40:28 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mm: remove unused arg of set_page_dirty_balance()

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

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>
---
 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
@@ -178,7 +178,7 @@ 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
@@ -2752,7 +2752,7 @@ static int do_wp_page(struct mm_struct *
 		 */
 		if (!page_mkwrite) {
 			wait_on_page_locked(dirty_page);
-			set_page_dirty_balance(dirty_page, page_mkwrite);
+			set_page_dirty_balance(dirty_page);
 			/* file_update_time outside page_lock */
 			if (vma->vm_file)
 				file_update_time(vma->vm_file);
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1562,9 +1562,9 @@ static void balance_dirty_pages(struct a
 		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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