[RFC PATCH V2 2/9] md: remove __clear_page_buffers and use attach/clear_page_private

[Guoqing Jiang]

After introduce attach/clear_page_private in pagemap.h, we can remove
the duplicat code and call the new functions.

Cc: Song Liu <s...@kernel.org>
Cc: linux-r...@vger.kernel.org
Signed-off-by: Guoqing Jiang <guoqing.ji...@cloud.ionos.com>
---
RFC -> RFC V2
1. change the name of new functions to attach/clear_page_private.

 drivers/md/md-bitmap.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index b952bd45bd6a..033d12063600 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -324,14 +324,6 @@ static void end_bitmap_write(struct buffer_head *bh, int 
uptodate)
                wake_up(&bitmap->write_wait);
 }
 
-/* copied from buffer.c */
-static void
-__clear_page_buffers(struct page *page)
-{
-       ClearPagePrivate(page);
-       set_page_private(page, 0);
-       put_page(page);
-}
 static void free_buffers(struct page *page)
 {
        struct buffer_head *bh;
@@ -345,7 +337,7 @@ static void free_buffers(struct page *page)
                free_buffer_head(bh);
                bh = next;
        }
-       __clear_page_buffers(page);
+       clear_page_private(page);
        put_page(page);
 }
 
@@ -374,7 +366,7 @@ static int read_page(struct file *file, unsigned long index,
                ret = -ENOMEM;
                goto out;
        }
-       attach_page_buffers(page, bh);
+       attach_page_private(page, bh);
        blk_cur = index << (PAGE_SHIFT - inode->i_blkbits);
        while (bh) {
                block = blk_cur;
-- 
2.17.1