Btrfs: Add support for duplicate blocks on a single spindle

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4ab98d8b73f..1885ec4280c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -231,7 +231,7 @@ again:
                 if (start + num  > total_fs_bytes)
                         goto new_group;
                 if (!block_group_bits(cache, data)) {
-                        printk("block group bits don't match %Lu %Lu\n", cache->flags, data);
+                        printk("block group bits don't match %Lu %d\n", cache->flags, data);
                 }
                 *start_ret = start;
                 return 0;
@@ -1048,7 +1048,8 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
 static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
 {
         u64 extra_flags = flags & (BTRFS_BLOCK_GROUP_RAID0 |
-                                   BTRFS_BLOCK_GROUP_RAID1);
+                                   BTRFS_BLOCK_GROUP_RAID1 |
+                                   BTRFS_BLOCK_GROUP_DUP);
         if (extra_flags) {
                 if (flags & BTRFS_BLOCK_GROUP_DATA)
                         fs_info->avail_data_alloc_bits |= extra_flags;