extent fixes

[platform/upstream/btrfs-progs.git] / mkfs.c

diff --git a/mkfs.c b/mkfs.c
index bab98c6..584aba4 100644 (file)
--- a/mkfs.c
+++ b/mkfs.c
@@ -18,12 +18,13 @@ int mkfs(int fd)
        struct extent_item extent_item;
        int ret;
 
+       /* setup the super block area */
        memset(info, 0, sizeof(info));
        info[0].blocknr = 16;
        info[0].objectid = 1;
        info[0].tree_root = 17;
        info[0].alloc_extent.blocknr = 0;
-       info[0].alloc_extent.num_blocks = 20;
+       info[0].alloc_extent.num_blocks = 64;
        /* 0-17 are used (inclusive) */
        info[0].alloc_extent.num_used = 18;
 
@@ -31,12 +32,14 @@ int mkfs(int fd)
        info[1].objectid = 2;
        info[1].tree_root = 64;
        info[1].alloc_extent.blocknr = 64;
-       info[1].alloc_extent.num_blocks = 8;
+       info[1].alloc_extent.num_blocks = 64;
        info[1].alloc_extent.num_used = 1;
        ret = pwrite(fd, info, sizeof(info),
                     CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
        if (ret != sizeof(info))
                return -1;
+
+       /* create leaves for the tree root and extent root */
        memset(&empty_leaf, 0, sizeof(empty_leaf));
        empty_leaf.header.parentid = 1;
        empty_leaf.header.blocknr = 17;