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btrfs: remove a pointless NULL check in btrfs_lookup_fs_root

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btrfs_grab_root already checks for a NULL root itself.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2023-05-23 10:40:20 +02:00 committed by David Sterba
parent e91909aace
commit 25ac047c9d
1 changed files with 1 additions and 2 deletions
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3
fs/btrfs/disk-io.c
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@ -1157,8 +1157,7 @@ static struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
spin_lock(&fs_info->fs_roots_radix_lock);
root = radix_tree_lookup(&fs_info->fs_roots_radix,
(unsigned long)root_id);
if (root)
root = btrfs_grab_root(root);
root = btrfs_grab_root(root);
spin_unlock(&fs_info->fs_roots_radix_lock);
return root;
}