linux-kernel - [PATCH 6/6] mm: Move page dirtying prototypes from mm.h

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Date:   Tue, 15 Jun 2021 17:23:42 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     Christoph Hellwig <hch@....de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jan Kara <jack@...e.cz>, Al Viro <viro@...iv.linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Subject: [PATCH 6/6] mm: Move page dirtying prototypes from mm.h

These functions implement the address_space ->set_page_dirty operation
and should live in pagemap.h, not mm.h so that the rest of the kernel
doesn't get funny ideas about calling them directly.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 fs/fuse/dax.c           | 1 +
 fs/zonefs/super.c       | 2 +-
 include/linux/mm.h      | 3 ---
 include/linux/pagemap.h | 4 ++++
 4 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c
index 515ad0895345..fb733eb5aead 100644
--- a/fs/fuse/dax.c
+++ b/fs/fuse/dax.c
@@ -9,6 +9,7 @@
 #include <linux/delay.h>
 #include <linux/dax.h>
 #include <linux/uio.h>
+#include <linux/pagemap.h>
 #include <linux/pfn_t.h>
 #include <linux/iomap.h>
 #include <linux/interval_tree.h>
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 3aacf016c7c2..dbf03635869c 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -5,7 +5,7 @@
  * Copyright (C) 2019 Western Digital Corporation or its affiliates.
  */
 #include <linux/module.h>
-#include <linux/fs.h>
+#include <linux/pagemap.h>
 #include <linux/magic.h>
 #include <linux/iomap.h>
 #include <linux/init.h>
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1086b556961a..5608f75ecc80 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1853,9 +1853,6 @@ extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
 extern void do_invalidatepage(struct page *page, unsigned int offset,
 			      unsigned int length);
 
-void __set_page_dirty(struct page *, struct address_space *, int warn);
-int __set_page_dirty_nobuffers(struct page *page);
-int __set_page_dirty_no_writeback(struct page *page);
 int redirty_page_for_writepage(struct writeback_control *wbc,
 				struct page *page);
 void account_page_cleaned(struct page *page, struct address_space *mapping,
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 5f0582de24e7..090e45616172 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -752,6 +752,10 @@ int wait_on_page_writeback_killable(struct page *page);
 extern void end_page_writeback(struct page *page);
 void wait_for_stable_page(struct page *page);
 
+void __set_page_dirty(struct page *, struct address_space *, int warn);
+int __set_page_dirty_nobuffers(struct page *page);
+int __set_page_dirty_no_writeback(struct page *page);
+
 void page_endio(struct page *page, bool is_write, int err);
 
 /**
-- 
2.30.2