ext4: convert to new i_version API

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index bcf0dff..55f6e38 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2956,7 +2956,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 			     "empty directory '%.*s' has too many links (%u)",
 			     dentry->d_name.len, dentry->d_name.name,
 			     inode->i_nlink);
-	inode->i_version++;
+	inode_inc_iversion(inode);
 	clear_nlink(inode);
 	/* There's no need to set i_disksize: the fact that i_nlink is
 	 * zero will ensure that the right thing happens during any
@@ -3362,7 +3362,7 @@ static int ext4_setent(handle_t *handle, struct ext4_renament *ent,
 	ent->de->inode = cpu_to_le32(ino);
 	if (ext4_has_feature_filetype(ent->dir->i_sb))
 		ent->de->file_type = file_type;
-	ent->dir->i_version++;
+	inode_inc_iversion(ent->dir);
 	ent->dir->i_ctime = ent->dir->i_mtime =
 		current_time(ent->dir);
 	ext4_mark_inode_dirty(handle, ent->dir);