btrfs: simpilify btrfs_subvol_inherit_props

We just need a superblock, but we look it up using two different
roots depending on the call site.  Let's just use a superblock
pointer initialized at the outset.

This is mostly for Coccinelle not to choke on my root push up set.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index 36992128c746..cf0b444ac4f3 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -350,6 +350,7 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
                                struct btrfs_root *root,
                                struct btrfs_root *parent_root)
 {
+        struct super_block *sb = root->fs_info->sb;
         struct btrfs_key key;
         struct inode *parent_inode, *child_inode;
         int ret;
@@ -358,12 +359,11 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
         key.type = BTRFS_INODE_ITEM_KEY;
         key.offset = 0;
 
-        parent_inode = btrfs_iget(parent_root->fs_info->sb, &key,
-                                  parent_root, NULL);
+        parent_inode = btrfs_iget(sb, &key, parent_root, NULL);
         if (IS_ERR(parent_inode))
                 return PTR_ERR(parent_inode);
 
-        child_inode = btrfs_iget(root->fs_info->sb, &key, root, NULL);
+        child_inode = btrfs_iget(sb, &key, root, NULL);
         if (IS_ERR(child_inode)) {
                 iput(parent_inode);
                 return PTR_ERR(child_inode);