md: remove __clear_page_buffers and use attach/detach_page_private

After introduction attach/detach_page_private in pagemap.h, we can remove
the duplicated code and call the new functions.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Song Liu <song@kernel.org>
Link: http://lkml.kernel.org/r/20200517214718.468-3-guoqing.jiang@cloud.ionos.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index b952bd4..95a5f37 100644 (file)
--- 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);
+       detach_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;