No filesystem calling __generic_file_fsync() uses metadata bh tracking.
Drop sync_mapping_buffers() call from __generic_file_fsync() as it's
pointless now which untangles buffer head handling from fs/libfs.c.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/libfs.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/fs/libfs.c b/fs/libfs.c
index ed7242d614fe..e67e43c6509a 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -18,7 +18,6 @@
 #include <linux/exportfs.h>
 #include <linux/iversion.h>
 #include <linux/writeback.h>
-#include <linux/buffer_head.h> /* sync_mapping_buffers */
 #include <linux/fs_context.h>
 #include <linux/pseudo_fs.h>
 #include <linux/fsnotify.h>
@@ -1555,22 +1554,18 @@ int __generic_file_fsync(struct file *file, loff_t start, loff_t end,
 {
 	struct inode *inode = file->f_mapping->host;
 	int err;
-	int ret;
+	int ret = 0;
 
 	err = file_write_and_wait_range(file, start, end);
 	if (err)
 		return err;
 
-	ret = sync_mapping_buffers(inode->i_mapping);
 	if (!(inode_state_read_once(inode) & I_DIRTY_ALL))
 		goto out;
 	if (datasync && !(inode_state_read_once(inode) & I_DIRTY_DATASYNC))
 		goto out;
 
-	err = sync_inode_metadata(inode, 1);
-	if (ret == 0)
-		ret = err;
-
+	ret = sync_inode_metadata(inode, 1);
 out:
 	/* check and advance again to catch errors after syncing out buffers */
 	err = file_check_and_advance_wb_err(file);
-- 
2.51.0