[PATCH 1/5] fs/buffer: export __clear_page_buffers

[Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>]

Export the function so others (such as md, btrfs and iomap) can reuse it.

Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
---
 fs/buffer.c                 | 4 ++--
 include/linux/buffer_head.h | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index f73276d746bb..05b7489d9aa3 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -123,13 +123,13 @@ void __wait_on_buffer(struct buffer_head * bh)
 }
 EXPORT_SYMBOL(__wait_on_buffer);
 
-static void
-__clear_page_buffers(struct page *page)
+void __clear_page_buffers(struct page *page)
 {
 	ClearPagePrivate(page);
 	set_page_private(page, 0);
 	put_page(page);
 }
+EXPORT_SYMBOL(__clear_page_buffers);
 
 static void buffer_io_error(struct buffer_head *bh, char *msg)
 {
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index e0b020eaf32e..735b094d89e1 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -181,6 +181,7 @@ static inline void clean_bdev_bh_alias(struct buffer_head *bh)
 
 void mark_buffer_async_write(struct buffer_head *bh);
 void __wait_on_buffer(struct buffer_head *);
+void __clear_page_buffers(struct page *page);
 wait_queue_head_t *bh_waitq_head(struct buffer_head *bh);
 struct buffer_head *__find_get_block(struct block_device *bdev, sector_t block,
 			unsigned size);
-- 
2.17.1