diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 7011ac9..d444281 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1978,7 +1978,6 @@ static int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
 		/* find extent for this block */
 		down_read(&EXT4_I(inode)->i_data_sem);
 		path = ext4_ext_find_extent(inode, block, path);
-		up_read(&EXT4_I(inode)->i_data_sem);
 		if (IS_ERR(path)) {
 			err = PTR_ERR(path);
 			path = NULL;
@@ -1993,6 +1992,7 @@ static int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
 		}
 		ex = path[depth].p_ext;
 		next = ext4_ext_next_allocated_block(path);
+		up_read(&EXT4_I(inode)->i_data_sem);
 
 		exists = 0;
 		if (!ex) {