We create the snapshot and then use it for a bunch of things, we need to
hold a ref on it while we're messing with it.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
d_instantiate(dentry, inode);
ret = 0;
fail:
+ btrfs_put_fs_root(pending_snapshot->snap);
btrfs_subvolume_release_metadata(fs_info, &pending_snapshot->block_rsv);
dec_and_free:
if (snapshot_force_cow)
btrfs_abort_transaction(trans, ret);
goto fail;
}
+ if (!btrfs_grab_fs_root(pending->snap)) {
+ ret = -ENOENT;
+ pending->snap = NULL;
+ btrfs_abort_transaction(trans, ret);
+ goto fail;
+ }
ret = btrfs_reloc_post_snapshot(trans, pending);
if (ret) {