[PATCH 4/6] fs: Remove anon_set_page_dirty()

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Christoph Hellwig <hch@lst.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jan Kara <jack@suse.cz>, Al Viro <viro@zeniv.linux.org.uk>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: [PATCH 4/6] fs: Remove anon_set_page_dirty()
Date: Tue, 15 Jun 2021 17:23:40 +0100	[thread overview]
Message-ID: <20210615162342.1669332-5-willy@infradead.org> (raw)
In-Reply-To: <20210615162342.1669332-1-willy@infradead.org>

Use __set_page_dirty_no_writeback() instead.  This will set the dirty
bit on the page, which will be used to avoid calling set_page_dirty()
in the future.  It will have no effect on actually writing the page
back, as the pages are not on any LRU lists.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 fs/libfs.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/fs/libfs.c b/fs/libfs.c
index 2d7f086b93d6..3fdd89b156d6 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1217,19 +1217,10 @@ void kfree_link(void *p)
 }
 EXPORT_SYMBOL(kfree_link);
 
-/*
- * nop .set_page_dirty method so that people can use .page_mkwrite on
- * anon inodes.
- */
-static int anon_set_page_dirty(struct page *page)
-{
-	return 0;
-};
-
 struct inode *alloc_anon_inode(struct super_block *s)
 {
 	static const struct address_space_operations anon_aops = {
-		.set_page_dirty = anon_set_page_dirty,
+		.set_page_dirty = __set_page_dirty_no_writeback,
 	};
 	struct inode *inode = new_inode_pseudo(s);
 
-- 
2.30.2

