Commit ae460f05 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: remove the cross file system checks from remap 



The sb check is already done in do_clone_file_range, and the mnt check
(which will hopefully go away in a subsequent patch) is done in
ioctl_file_clone().  Remove the check in our code and put an ASSERT() to
make sure it doesn't change underneath us.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 7eefae6b

fs/btrfs/reflink.c

+1 −3
Original line number Diff line number Diff line
@@ -781,9 +781,7 @@ static int btrfs_remap_file_range_prep(struct file *file_in, loff_t pos_in, 
		if (btrfs_root_readonly(root_out))

			return -EROFS;



		if (file_in->f_path.mnt != file_out->f_path.mnt ||

		    inode_in->i_sb != inode_out->i_sb)

			return -EXDEV;

		ASSERT(inode_in->i_sb == inode_out->i_sb);

	}



	/* Don't make the dst file partly checksummed */