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Btrfs: Add back pointers from extents to the btree or file referencing them

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-12-11 09:25:06 -05:00
parent 74493f7a59
commit 7bb86316c3
8 changed files with 577 additions and 105 deletions
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10
fs/btrfs/print-tree.c
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@@ -33,6 +33,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
struct btrfs_file_extent_item *fi;
struct btrfs_key key;
struct btrfs_key found_key;
struct btrfs_extent_ref *ref;
u32 type;
printk("leaf %llu total ptrs %d free space %d\n",
@@ -73,6 +74,15 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
printk("\t\textent data refs %u\n",
btrfs_extent_refs(l, ei));
break;
case BTRFS_EXTENT_REF_KEY:
ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref);
printk("\t\textent back ref root %llu gen %llu "
"owner %llu offset %llu\n",
(unsigned long long)btrfs_ref_root(l, ref),
(unsigned long long)btrfs_ref_generation(l, ref),
(unsigned long long)btrfs_ref_objectid(l, ref),
(unsigned long long)btrfs_ref_offset(l, ref));
break;
case BTRFS_EXTENT_DATA_KEY:
fi = btrfs_item_ptr(l, i,