u64 extent_item_pos,
struct extent_inode_elem **eie)
{
- u64 data_offset;
- u64 data_len;
+ u64 offset = 0;
struct extent_inode_elem *e;
- data_offset = btrfs_file_extent_offset(eb, fi);
- data_len = btrfs_file_extent_num_bytes(eb, fi);
+ if (!btrfs_file_extent_compression(eb, fi) &&
+ !btrfs_file_extent_encryption(eb, fi) &&
+ !btrfs_file_extent_other_encoding(eb, fi)) {
+ u64 data_offset;
+ u64 data_len;
- if (extent_item_pos < data_offset ||
- extent_item_pos >= data_offset + data_len)
- return 1;
+ data_offset = btrfs_file_extent_offset(eb, fi);
+ data_len = btrfs_file_extent_num_bytes(eb, fi);
+
+ if (extent_item_pos < data_offset ||
+ extent_item_pos >= data_offset + data_len)
+ return 1;
+ offset = extent_item_pos - data_offset;
+ }
e = kmalloc(sizeof(*e), GFP_NOFS);
if (!e)
e->next = *eie;
e->inum = key->objectid;
- e->offset = key->offset + (extent_item_pos - data_offset);
+ e->offset = key->offset + offset;
*eie = e;
return 0;
* to a logical address
*/
static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info,
- int search_commit_root,
- u64 time_seq,
- struct __prelim_ref *ref,
- struct ulist *parents,
- const u64 *extent_item_pos)
+ struct btrfs_path *path, u64 time_seq,
+ struct __prelim_ref *ref,
+ struct ulist *parents,
+ const u64 *extent_item_pos)
{
- struct btrfs_path *path;
struct btrfs_root *root;
struct btrfs_key root_key;
struct extent_buffer *eb;
int root_level;
int level = ref->level;
- path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
- path->search_commit_root = !!search_commit_root;
-
root_key.objectid = ref->root_id;
root_key.type = BTRFS_ROOT_ITEM_KEY;
root_key.offset = (u64)-1;
time_seq, ref->wanted_disk_byte,
extent_item_pos);
out:
- btrfs_free_path(path);
+ path->lowest_level = 0;
+ btrfs_release_path(path);
return ret;
}
* resolve all indirect backrefs from the list
*/
static int __resolve_indirect_refs(struct btrfs_fs_info *fs_info,
- int search_commit_root, u64 time_seq,
+ struct btrfs_path *path, u64 time_seq,
struct list_head *head,
const u64 *extent_item_pos)
{
continue;
if (ref->count == 0)
continue;
- err = __resolve_indirect_ref(fs_info, search_commit_root,
- time_seq, ref, parents,
- extent_item_pos);
+ err = __resolve_indirect_ref(fs_info, path, time_seq, ref,
+ parents, extent_item_pos);
if (err == -ENOMEM)
goto out;
if (err)
int slot;
struct extent_buffer *leaf;
struct btrfs_key key;
+ struct btrfs_key found_key;
unsigned long ptr;
unsigned long end;
struct btrfs_extent_item *ei;
ei = btrfs_item_ptr(leaf, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(leaf, ei);
+ btrfs_item_key_to_cpu(leaf, &found_key, slot);
ptr = (unsigned long)(ei + 1);
end = (unsigned long)ei + item_size;
- if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+ if (found_key.type == BTRFS_EXTENT_ITEM_KEY &&
+ flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)ptr;
*info_level = btrfs_tree_block_level(leaf, info);
ptr += sizeof(struct btrfs_tree_block_info);
BUG_ON(ptr > end);
+ } else if (found_key.type == BTRFS_METADATA_ITEM_KEY) {
+ *info_level = found_key.offset;
} else {
BUG_ON(!(flags & BTRFS_EXTENT_FLAG_DATA));
}
struct btrfs_delayed_ref_head *head;
int info_level = 0;
int ret;
- int search_commit_root = (trans == BTRFS_BACKREF_SEARCH_COMMIT_ROOT);
struct list_head prefs_delayed;
struct list_head prefs;
struct __prelim_ref *ref;
INIT_LIST_HEAD(&prefs_delayed);
key.objectid = bytenr;
- key.type = BTRFS_EXTENT_ITEM_KEY;
key.offset = (u64)-1;
+ if (btrfs_fs_incompat(fs_info, SKINNY_METADATA))
+ key.type = BTRFS_METADATA_ITEM_KEY;
+ else
+ key.type = BTRFS_EXTENT_ITEM_KEY;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->search_commit_root = !!search_commit_root;
+ if (!trans)
+ path->search_commit_root = 1;
/*
* grab both a lock on the path and a lock on the delayed ref head.
goto out;
BUG_ON(ret == 0);
- if (trans != BTRFS_BACKREF_SEARCH_COMMIT_ROOT) {
+ if (trans) {
/*
* look if there are updates for this ref queued and lock the
* head
slot = path->slots[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
if (key.objectid == bytenr &&
- key.type == BTRFS_EXTENT_ITEM_KEY) {
+ (key.type == BTRFS_EXTENT_ITEM_KEY ||
+ key.type == BTRFS_METADATA_ITEM_KEY)) {
ret = __add_inline_refs(fs_info, path, bytenr,
&info_level, &prefs);
if (ret)
__merge_refs(&prefs, 1);
- ret = __resolve_indirect_refs(fs_info, search_commit_root, time_seq,
- &prefs, extent_item_pos);
+ ret = __resolve_indirect_refs(fs_info, path, time_seq, &prefs,
+ extent_item_pos);
if (ret)
goto out;
{
int ret;
u64 flags;
+ u64 size = 0;
u32 item_size;
struct extent_buffer *eb;
struct btrfs_extent_item *ei;
struct btrfs_key key;
- key.type = BTRFS_EXTENT_ITEM_KEY;
+ if (btrfs_fs_incompat(fs_info, SKINNY_METADATA))
+ key.type = BTRFS_METADATA_ITEM_KEY;
+ else
+ key.type = BTRFS_EXTENT_ITEM_KEY;
key.objectid = logical;
key.offset = (u64)-1;
return ret;
btrfs_item_key_to_cpu(path->nodes[0], found_key, path->slots[0]);
- if (found_key->type != BTRFS_EXTENT_ITEM_KEY ||
+ if (found_key->type == BTRFS_METADATA_ITEM_KEY)
+ size = fs_info->extent_root->leafsize;
+ else if (found_key->type == BTRFS_EXTENT_ITEM_KEY)
+ size = found_key->offset;
+
+ if ((found_key->type != BTRFS_EXTENT_ITEM_KEY &&
+ found_key->type != BTRFS_METADATA_ITEM_KEY) ||
found_key->objectid > logical ||
- found_key->objectid + found_key->offset <= logical) {
+ found_key->objectid + size <= logical) {
pr_debug("logical %llu is not within any extent\n",
(unsigned long long)logical);
return -ENOENT;
iterate_extent_inodes_t *iterate, void *ctx)
{
int ret;
- struct btrfs_trans_handle *trans;
+ struct btrfs_trans_handle *trans = NULL;
struct ulist *refs = NULL;
struct ulist *roots = NULL;
struct ulist_node *ref_node = NULL;
pr_debug("resolving all inodes for extent %llu\n",
extent_item_objectid);
- if (search_commit_root) {
- trans = BTRFS_BACKREF_SEARCH_COMMIT_ROOT;
- } else {
+ if (!search_commit_root) {
trans = btrfs_join_transaction(fs_info->extent_root);
if (IS_ERR(trans))
return PTR_ERR(trans);
projects / linux-imx.git / blobdiff