On Mon, 2008-08-18 at 12:51 +0100, David Woodhouse wrote: > The patch below works OK, but doesn't yet handle > subvolumes -- it gives the same fsid for all subvolumes. Is this the correct fix? diff --git a/super.c b/super.c index 6446ab7..55f4d00 100644 --- a/super.c +++ b/super.c @@ -503,6 +503,10 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf) on a big-endian or little-endian host */ buf->f_fsid.val[0] = be32_to_cpu(fsid[0]) ^ be32_to_cpu(fsid[2]); buf->f_fsid.val[1] = be32_to_cpu(fsid[1]) ^ be32_to_cpu(fsid[3]); + /* Mask in the root object ID too, to disambiguate subvols */ + buf->f_fsid.val[0] ^= BTRFS_I(dentry->d_inode)->root->objectid >> 32; + buf->f_fsid.val[1] ^= BTRFS_I(dentry->d_inode)->root->objectid; + return 0; } -- David Woodhouse Open Source Technology Centre David.Woodhouse@xxxxxxxxx Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
