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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>
This commit is contained in:
Jeff Mahoney 2016-06-10 17:03:59 -04:00 committed by David Sterba
parent f5ee5c9ac5
commit bd6c57dda6
1 changed files with 3 additions and 3 deletions
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6
fs/btrfs/props.c
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@ -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);