static void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
{
struct btrfs_extent_item *ei;
struct btrfs_extent_inline_ref *iref;
struct btrfs_extent_data_ref *dref;
struct btrfs_shared_data_ref *sref;
struct btrfs_disk_key key;
unsigned long end;
unsigned long ptr;
int type;
u32 item_size = btrfs_item_size_nr(eb, slot);
u64 flags;
u64 offset;
if (item_size < sizeof(*ei)) {
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
struct btrfs_extent_item_v0 *ei0;
BUG_ON(item_size != sizeof(*ei0));
ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
printf("\t\textent refs %u\n",
btrfs_extent_refs_v0(eb, ei0));
return;
#else
BUG();
#endif
}
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(eb, ei);
printf("\t\textent refs %llu gen %llu flags %llu\n",
(unsigned long long)btrfs_extent_refs(eb, ei),
(unsigned long long)btrfs_extent_generation(eb, ei),
(unsigned long long)flags);
if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)(ei + 1);
btrfs_tree_block_key(eb, info, &key);
printf("\t\ttree block ");
btrfs_print_key(&key);
printf(" level %d\n", btrfs_tree_block_level(eb, info));
iref = (struct btrfs_extent_inline_ref *)(info + 1);
} else if (metadata) {
struct btrfs_key tmp;
btrfs_item_key_to_cpu(eb, &tmp, slot);
printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
} else{
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
}
ptr = (unsigned long)iref;
end = (unsigned long)ei + item_size;
while (ptr < end) {
iref = (struct btrfs_extent_inline_ref *)ptr;
type = btrfs_extent_inline_ref_type(eb, iref);
offset = btrfs_extent_inline_ref_offset(eb, iref);
switch (type) {
case BTRFS_TREE_BLOCK_REF_KEY:
printf("\t\ttree block backref root %llu\n",
(unsigned long long)offset);
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
printf("\t\tshared block backref parent %llu\n",
(unsigned long long)offset);
break;
case BTRFS_EXTENT_DATA_REF_KEY:
dref = (struct btrfs_extent_data_ref *)(&iref->offset);
printf("\t\textent data backref root %llu "
"objectid %llu offset %llu count %u\n",
(unsigned long long)btrfs_extent_data_ref_root(eb, dref),
(unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
(unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
btrfs_extent_data_ref_count(eb, dref));
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = (struct btrfs_shared_data_ref *)(iref + 1);
printf("\t\tshared data backref parent %llu count %u\n",
(unsigned long long)offset,
btrfs_shared_data_ref_count(eb, sref));
break;
default:
return;
}
ptr += btrfs_extent_inline_ref_size(type);
}
WARN_ON(ptr > end);
}
static void print_extent_item(struct extent_buffer *eb, int slot, int type)
{
struct btrfs_extent_item *ei;
struct btrfs_extent_inline_ref *iref;
struct btrfs_extent_data_ref *dref;
struct btrfs_shared_data_ref *sref;
struct btrfs_disk_key key;
unsigned long end;
unsigned long ptr;
u32 item_size = btrfs_item_size_nr(eb, slot);
u64 flags;
u64 offset;
if (item_size < sizeof(*ei)) {
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
struct btrfs_extent_item_v0 *ei0;
BUG_ON(item_size != sizeof(*ei0));
ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
printk(KERN_INFO "\t\textent refs %u\n",
btrfs_extent_refs_v0(eb, ei0));
return;
#else
BUG();
#endif
}
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(eb, ei);
printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n",
btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
flags);
if ((type == BTRFS_EXTENT_ITEM_KEY) &&
flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)(ei + 1);
btrfs_tree_block_key(eb, info, &key);
printk(KERN_INFO "\t\ttree block key (%llu %u %llu) "
"level %d\n",
btrfs_disk_key_objectid(&key), key.type,
btrfs_disk_key_offset(&key),
btrfs_tree_block_level(eb, info));
iref = (struct btrfs_extent_inline_ref *)(info + 1);
} else {
iref = (struct btrfs_extent_inline_ref *)(ei + 1);
}
ptr = (unsigned long)iref;
end = (unsigned long)ei + item_size;
while (ptr < end) {
iref = (struct btrfs_extent_inline_ref *)ptr;
type = btrfs_extent_inline_ref_type(eb, iref);
offset = btrfs_extent_inline_ref_offset(eb, iref);
switch (type) {
case BTRFS_TREE_BLOCK_REF_KEY:
printk(KERN_INFO "\t\ttree block backref "
"root %llu\n", offset);
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
printk(KERN_INFO "\t\tshared block backref "
"parent %llu\n", offset);
break;
case BTRFS_EXTENT_DATA_REF_KEY:
dref = (struct btrfs_extent_data_ref *)(&iref->offset);
print_extent_data_ref(eb, dref);
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = (struct btrfs_shared_data_ref *)(iref + 1);
printk(KERN_INFO "\t\tshared data backref "
"parent %llu count %u\n",
offset, btrfs_shared_data_ref_count(eb, sref));
break;
default:
BUG();
}
ptr += btrfs_extent_inline_ref_size(type);
}
WARN_ON(ptr > end);
}
