forked from luck/tmp_suning_uos_patched
Btrfs: don't bother autodefragging if our root is going away
We can end up with inodes on the auto defrag list that exist on roots that are going to be deleted. This is extra work we don't need to do, so just bail if our root has 0 root refs. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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@ -310,6 +310,11 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
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goto cleanup;
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}
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if (btrfs_root_refs(&inode_root->root_item) == 0) {
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ret = -ENOENT;
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goto cleanup;
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}
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key.objectid = defrag->ino;
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btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
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key.offset = 0;
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