linux-kernel - [PATCH] fb_defio: Use __set_page_dirty_no

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Message-Id: <20210306211516.3222952-1-willy@infradead.org>
Date:   Sat,  6 Mar 2021 21:15:16 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-fbdev@...r.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org, Jani Nikula <jani.nikula@...el.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Jaya Kumar <jayalk@...works.biz>
Subject: [PATCH] fb_defio: Use __set_page_dirty_no_writeback

The home-grown set_page_dirty() implementation had the wrong return value.
Use __set_page_dirty_no_writeback() like other in-memory implementations.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 drivers/video/fbdev/core/fb_defio.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c
index a591d291b231..35021265e294 100644
--- a/drivers/video/fbdev/core/fb_defio.c
+++ b/drivers/video/fbdev/core/fb_defio.c
@@ -151,15 +151,8 @@ static const struct vm_operations_struct fb_deferred_io_vm_ops = {
 	.page_mkwrite	= fb_deferred_io_mkwrite,
 };
 
-static int fb_deferred_io_set_page_dirty(struct page *page)
-{
-	if (!PageDirty(page))
-		SetPageDirty(page);
-	return 0;
-}
-
 static const struct address_space_operations fb_deferred_io_aops = {
-	.set_page_dirty = fb_deferred_io_set_page_dirty,
+	.set_page_dirty = __set_page_dirty_no_writeback,
 };
 
 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma)
-- 
2.30.0