[PATCH] ext4: use i_blocksize()

[Geliang Tang]

Since i_blocksize() helper has been defined in fs.h, use it instead
of open-coding.

Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
---
 fs/ext4/move_extent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 578f8c3..60222ed 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -382,7 +382,7 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
 	/* Perform all necessary steps similar write_begin()/write_end()
 	 * but keeping in mind that i_size will not change */
 	if (!page_has_buffers(pagep[0]))
-		create_empty_buffers(pagep[0], 1 << orig_inode->i_blkbits, 0);
+		create_empty_buffers(pagep[0], i_blocksize(orig_inode), 0);
 	bh = page_buffers(pagep[0]);
 	for (i = 0; i < data_offset_in_page; i++)
 		bh = bh->b_this_page;
-- 
2.9.3