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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c285
1 files changed, 147 insertions, 138 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 477466d167a..1be8f9f04a1 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -129,7 +129,7 @@ err:
struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
btrfs_fs_info *info,
- u64 blocknr)
+ u64 bytenr)
{
struct extent_map_tree *block_group_cache;
struct btrfs_block_group_cache *block_group = NULL;
@@ -140,7 +140,7 @@ struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
block_group_cache = &info->block_group_cache;
ret = find_first_extent_bit(block_group_cache,
- blocknr, &start, &end,
+ bytenr, &start, &end,
BLOCK_GROUP_DATA | BLOCK_GROUP_METADATA);
if (ret) {
return NULL;
@@ -152,7 +152,7 @@ struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
block_group = (struct btrfs_block_group_cache *)ptr;
- if (block_group->key.objectid <= blocknr && blocknr <=
+ if (block_group->key.objectid <= bytenr && bytenr <=
block_group->key.objectid + block_group->key.offset)
return block_group;
@@ -315,7 +315,7 @@ found:
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 blocknr, u64 num_blocks)
+ u64 bytenr, u64 num_bytes)
{
struct btrfs_path *path;
int ret;
@@ -324,13 +324,14 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_extent_item *item;
u32 refs;
+ WARN_ON(num_bytes < root->sectorsize);
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- key.objectid = blocknr;
+ key.objectid = bytenr;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
- key.offset = num_blocks;
+ key.offset = num_bytes;
ret = btrfs_search_slot(trans, root->fs_info->extent_root, &key, path,
0, 1);
if (ret < 0)
@@ -361,8 +362,8 @@ int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
}
static int lookup_extent_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 blocknr,
- u64 num_blocks, u32 *refs)
+ struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, u32 *refs)
{
struct btrfs_path *path;
int ret;
@@ -370,9 +371,10 @@ static int lookup_extent_ref(struct btrfs_trans_handle *trans,
struct extent_buffer *l;
struct btrfs_extent_item *item;
+ WARN_ON(num_bytes < root->sectorsize);
path = btrfs_alloc_path();
- key.objectid = blocknr;
- key.offset = num_blocks;
+ key.objectid = bytenr;
+ key.offset = num_bytes;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
ret = btrfs_search_slot(trans, root->fs_info->extent_root, &key, path,
0, 0);
@@ -380,7 +382,7 @@ static int lookup_extent_ref(struct btrfs_trans_handle *trans,
goto out;
if (ret != 0) {
btrfs_print_leaf(root, path->nodes[0]);
- printk("failed to find block number %Lu\n", blocknr);
+ printk("failed to find block number %Lu\n", bytenr);
BUG();
}
l = path->nodes[0];
@@ -394,19 +396,19 @@ out:
int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
- return btrfs_inc_extent_ref(trans, root,
- extent_buffer_blocknr(root->node), 1);
+ return btrfs_inc_extent_ref(trans, root, root->node->start,
+ root->node->len);
}
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf)
{
- u64 blocknr;
+ u64 bytenr;
u32 nritems;
struct btrfs_key key;
struct btrfs_file_extent_item *fi;
int i;
- int leaf;
+ int level;
int ret;
int faili;
int err;
@@ -414,11 +416,11 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
if (!root->ref_cows)
return 0;
- leaf = btrfs_is_leaf(buf);
+ level = btrfs_header_level(buf);
nritems = btrfs_header_nritems(buf);
for (i = 0; i < nritems; i++) {
- if (leaf) {
- u64 disk_blocknr;
+ if (level == 0) {
+ u64 disk_bytenr;
btrfs_item_key_to_cpu(buf, &key, i);
if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
continue;
@@ -427,18 +429,19 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
if (btrfs_file_extent_type(buf, fi) ==
BTRFS_FILE_EXTENT_INLINE)
continue;
- disk_blocknr = btrfs_file_extent_disk_blocknr(buf, fi);
- if (disk_blocknr == 0)
+ disk_bytenr = btrfs_file_extent_disk_bytenr(buf, fi);
+ if (disk_bytenr == 0)
continue;
- ret = btrfs_inc_extent_ref(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(buf, fi));
+ ret = btrfs_inc_extent_ref(trans, root, disk_bytenr,
+ btrfs_file_extent_disk_num_bytes(buf, fi));
if (ret) {
faili = i;
goto fail;
}
} else {
- blocknr = btrfs_node_blockptr(buf, i);
- ret = btrfs_inc_extent_ref(trans, root, blocknr, 1);
+ bytenr = btrfs_node_blockptr(buf, i);
+ ret = btrfs_inc_extent_ref(trans, root, bytenr,
+ btrfs_level_size(root, level - 1));
if (ret) {
faili = i;
goto fail;
@@ -449,8 +452,8 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
fail:
WARN_ON(1);
for (i =0; i < faili; i++) {
- if (leaf) {
- u64 disk_blocknr;
+ if (level == 0) {
+ u64 disk_bytenr;
btrfs_item_key_to_cpu(buf, &key, i);
if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
continue;
@@ -459,16 +462,17 @@ fail:
if (btrfs_file_extent_type(buf, fi) ==
BTRFS_FILE_EXTENT_INLINE)
continue;
- disk_blocknr = btrfs_file_extent_disk_blocknr(buf, fi);
- if (disk_blocknr == 0)
+ disk_bytenr = btrfs_file_extent_disk_bytenr(buf, fi);
+ if (disk_bytenr == 0)
continue;
- err = btrfs_free_extent(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(buf,
+ err = btrfs_free_extent(trans, root, disk_bytenr,
+ btrfs_file_extent_disk_num_bytes(buf,
fi), 0);
BUG_ON(err);
} else {
- blocknr = btrfs_node_blockptr(buf, i);
- err = btrfs_free_extent(trans, root, blocknr, 1, 0);
+ bytenr = btrfs_node_blockptr(buf, i);
+ err = btrfs_free_extent(trans, root, bytenr,
+ btrfs_level_size(root, level - 1), 0);
BUG_ON(err);
}
}
@@ -558,31 +562,31 @@ int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
static int update_block_group(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 blocknr, u64 num, int alloc, int mark_free,
- int data)
+ u64 bytenr, u64 num_bytes, int alloc,
+ int mark_free, int data)
{
struct btrfs_block_group_cache *cache;
struct btrfs_fs_info *info = root->fs_info;
- u64 total = num;
+ u64 total = num_bytes;
u64 old_val;
- u64 block_in_group;
+ u64 byte_in_group;
u64 start;
u64 end;
while(total) {
- cache = btrfs_lookup_block_group(info, blocknr);
+ cache = btrfs_lookup_block_group(info, bytenr);
if (!cache) {
return -1;
}
- block_in_group = blocknr - cache->key.objectid;
- WARN_ON(block_in_group > cache->key.offset);
+ byte_in_group = bytenr - cache->key.objectid;
+ WARN_ON(byte_in_group > cache->key.offset);
start = cache->key.objectid;
end = start + cache->key.offset - 1;
set_extent_bits(&info->block_group_cache, start, end,
BLOCK_GROUP_DIRTY, GFP_NOFS);
old_val = btrfs_block_group_used(&cache->item);
- num = min(total, cache->key.offset - block_in_group);
+ num_bytes = min(total, cache->key.offset - byte_in_group);
if (alloc) {
if (cache->data != data &&
old_val < (cache->key.offset >> 1)) {
@@ -608,18 +612,18 @@ static int update_block_group(struct btrfs_trans_handle *trans,
start, end, bit_to_set,
GFP_NOFS);
}
- old_val += num;
+ old_val += num_bytes;
} else {
- old_val -= num;
+ old_val -= num_bytes;
if (mark_free) {
set_extent_dirty(&info->free_space_cache,
- blocknr, blocknr + num - 1,
+ bytenr, bytenr + num_bytes - 1,
GFP_NOFS);
}
}
btrfs_set_block_group_used(&cache->item, old_val);
- total -= num;
- blocknr += num;
+ total -= num_bytes;
+ bytenr += num_bytes;
}
return 0;
}
@@ -701,13 +705,14 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
return 0;
}
-static int pin_down_block(struct btrfs_root *root, u64 blocknr, int pending)
+static int pin_down_bytes(struct btrfs_root *root, u64 bytenr, u32 num_bytes,
+ int pending)
{
int err = 0;
struct extent_buffer *buf;
if (!pending) {
- buf = btrfs_find_tree_block(root, blocknr);
+ buf = btrfs_find_tree_block(root, bytenr, num_bytes);
if (buf) {
if (btrfs_buffer_uptodate(buf)) {
u64 transid =
@@ -720,10 +725,11 @@ static int pin_down_block(struct btrfs_root *root, u64 blocknr, int pending)
free_extent_buffer(buf);
}
set_extent_dirty(&root->fs_info->pinned_extents,
- blocknr, blocknr, GFP_NOFS);
+ bytenr, bytenr + num_bytes - 1, GFP_NOFS);
} else {
set_extent_bits(&root->fs_info->pending_del,
- blocknr, blocknr, EXTENT_LOCKED, GFP_NOFS);
+ bytenr, bytenr + num_bytes - 1,
+ EXTENT_LOCKED, GFP_NOFS);
}
BUG_ON(err < 0);
return 0;
@@ -733,7 +739,7 @@ static int pin_down_block(struct btrfs_root *root, u64 blocknr, int pending)
* remove an extent from the root, returns 0 on success
*/
static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, u64 blocknr, u64 num_blocks, int pin,
+ *root, u64 bytenr, u64 num_bytes, int pin,
int mark_free)
{
struct btrfs_path *path;
@@ -745,9 +751,9 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
struct btrfs_extent_item *ei;
u32 refs;
- key.objectid = blocknr;
+ key.objectid = bytenr;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
- key.offset = num_blocks;
+ key.offset = num_bytes;
path = btrfs_alloc_path();
if (!path)
@@ -768,28 +774,29 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_mark_buffer_dirty(leaf);
if (refs == 0) {
- u64 super_blocks_used, root_blocks_used;
+ u64 super_used;
+ u64 root_used;
if (pin) {
- ret = pin_down_block(root, blocknr, 0);
+ ret = pin_down_bytes(root, bytenr, num_bytes, 0);
BUG_ON(ret);
}
/* block accounting for super block */
- super_blocks_used = btrfs_super_blocks_used(&info->super_copy);
- btrfs_set_super_blocks_used(&info->super_copy,
- super_blocks_used - num_blocks);
+ super_used = btrfs_super_bytes_used(&info->super_copy);
+ btrfs_set_super_bytes_used(&info->super_copy,
+ super_used - num_bytes);
/* block accounting for root item */
- root_blocks_used = btrfs_root_used(&root->root_item);
+ root_used = btrfs_root_used(&root->root_item);
btrfs_set_root_used(&root->root_item,
- root_blocks_used - num_blocks);
+ root_used - num_bytes);
ret = btrfs_del_item(trans, extent_root, path);
if (ret) {
return ret;
}
- ret = update_block_group(trans, root, blocknr, num_blocks, 0,
+ ret = update_block_group(trans, root, bytenr, num_bytes, 0,
mark_free, 0);
BUG_ON(ret);
}
@@ -836,17 +843,18 @@ static int del_pending_extents(struct btrfs_trans_handle *trans, struct
* remove an extent from the root, returns 0 on success
*/
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, u64 blocknr, u64 num_blocks, int pin)
+ *root, u64 bytenr, u64 num_bytes, int pin)
{
struct btrfs_root *extent_root = root->fs_info->extent_root;
int pending_ret;
int ret;
+ WARN_ON(num_bytes < root->sectorsize);
if (root == extent_root) {
- pin_down_block(root, blocknr, 1);
+ pin_down_bytes(root, bytenr, num_bytes, 1);
return 0;
}
- ret = __free_extent(trans, root, blocknr, num_blocks, pin, pin == 0);
+ ret = __free_extent(trans, root, bytenr, num_bytes, pin, pin == 0);
pending_ret = del_pending_extents(trans, root->fs_info->extent_root);
return ret ? ret : pending_ret;
}
@@ -860,8 +868,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
* Any available blocks before search_start are skipped.
*/
static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *orig_root, u64 num_blocks, u64 empty_size,
- u64 search_start, u64 search_end, u64 hint_block,
+ *orig_root, u64 num_bytes, u64 empty_size,
+ u64 search_start, u64 search_end, u64 hint_byte,
struct btrfs_key *ins, u64 exclude_start,
u64 exclude_nr, int data)
{
@@ -870,30 +878,29 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
int ret;
u64 hole_size = 0;
int slot = 0;
- u64 last_block = 0;
+ u64 last_byte = 0;
u64 orig_search_start = search_start;
int start_found;
struct extent_buffer *l;
struct btrfs_root * root = orig_root->fs_info->extent_root;
struct btrfs_fs_info *info = root->fs_info;
- int total_needed = num_blocks;
+ u64 total_needed = num_bytes;
int level;
struct btrfs_block_group_cache *block_group;
int full_scan = 0;
int wrapped = 0;
- u64 cached_search_start = 0;
- WARN_ON(num_blocks < 1);
+ WARN_ON(num_bytes < root->sectorsize);
btrfs_set_key_type(ins, BTRFS_EXTENT_ITEM_KEY);
level = btrfs_header_level(root->node);
if (search_end == (u64)-1)
- search_end = btrfs_super_total_blocks(&info->super_copy);
- if (hint_block) {
- block_group = btrfs_lookup_block_group(info, hint_block);
+ search_end = btrfs_super_total_bytes(&info->super_copy);
+ if (hint_byte) {
+ block_group = btrfs_lookup_block_group(info, hint_byte);
block_group = btrfs_find_block_group(root, block_group,
- hint_block, data, 1);
+ hint_byte, data, 1);
} else {
block_group = btrfs_find_block_group(root,
trans->block_group, 0,
@@ -906,7 +913,6 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
check_failed:
search_start = find_search_start(root, &block_group,
search_start, total_needed, data);
- cached_search_start = search_start;
btrfs_init_path(path);
ins->objectid = search_start;
@@ -958,27 +964,27 @@ check_failed:
start_found = 1;
goto check_pending;
}
- ins->objectid = last_block > search_start ?
- last_block : search_start;
+ ins->objectid = last_byte > search_start ?
+ last_byte : search_start;
ins->offset = search_end - ins->objectid;
goto check_pending;
}
btrfs_item_key_to_cpu(l, &key, slot);
- if (key.objectid >= search_start && key.objectid > last_block &&
+ if (key.objectid >= search_start && key.objectid > last_byte &&
start_found) {
- if (last_block < search_start)
- last_block = search_start;
- hole_size = key.objectid - last_block;
- if (hole_size >= num_blocks) {
- ins->objectid = last_block;
+ if (last_byte < search_start)
+ last_byte = search_start;
+ hole_size = key.objectid - last_byte;
+ if (hole_size >= num_bytes) {
+ ins->objectid = last_byte;
ins->offset = hole_size;
goto check_pending;
}
}
if (btrfs_key_type(&key) != BTRFS_EXTENT_ITEM_KEY) {
if (!start_found) {
- last_block = key.objectid;
+ last_byte = key.objectid;
start_found = 1;
}
goto next;
@@ -986,9 +992,9 @@ check_failed:
start_found = 1;
- last_block = key.objectid + key.offset;
+ last_byte = key.objectid + key.offset;
- if (!full_scan && last_block >= block_group->key.objectid +
+ if (!full_scan && last_byte >= block_group->key.objectid +
block_group->key.offset) {
btrfs_release_path(root, path);
search_start = block_group->key.objectid +
@@ -1006,20 +1012,20 @@ check_pending:
btrfs_release_path(root, path);
BUG_ON(ins->objectid < search_start);
- if (ins->objectid + num_blocks >= search_end)
+ if (ins->objectid + num_bytes >= search_end)
goto enospc;
if (test_range_bit(&info->extent_ins, ins->objectid,
- ins->objectid + num_blocks -1, EXTENT_LOCKED, 0)) {
- search_start = ins->objectid + num_blocks;
+ ins->objectid + num_bytes -1, EXTENT_LOCKED, 0)) {
+ search_start = ins->objectid + num_bytes;
goto new_group;
}
if (test_range_bit(&info->pinned_extents, ins->objectid,
- ins->objectid + num_blocks -1, EXTENT_DIRTY, 0)) {
- search_start = ins->objectid + num_blocks;
+ ins->objectid + num_bytes -1, EXTENT_DIRTY, 0)) {
+ search_start = ins->objectid + num_bytes;
goto new_group;
}
- if (exclude_nr > 0 && (ins->objectid + num_blocks > exclude_start &&
+ if (exclude_nr > 0 && (ins->objectid + num_bytes > exclude_start &&
ins->objectid < exclude_start + exclude_nr)) {
search_start = exclude_start + exclude_nr;
goto new_group;
@@ -1029,12 +1035,12 @@ check_pending:
if (block_group)
trans->block_group = block_group;
}
- ins->offset = num_blocks;
+ ins->offset = num_bytes;
btrfs_free_path(path);
return 0;
new_group:
- if (search_start + num_blocks >= search_end) {
+ if (search_start + num_bytes >= search_end) {
enospc:
search_start = orig_search_start;
if (full_scan) {
@@ -1069,12 +1075,12 @@ error:
*/
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 owner,
- u64 num_blocks, u64 empty_size, u64 hint_block,
+ u64 num_bytes, u64 empty_size, u64 hint_byte,
u64 search_end, struct btrfs_key *ins, int data)
{
int ret;
int pending_ret;
- u64 super_blocks_used, root_blocks_used;
+ u64 super_used, root_used;
u64 search_start = 0;
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_root *extent_root = info->extent_root;
@@ -1083,9 +1089,9 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
btrfs_set_stack_extent_refs(&extent_item, 1);
btrfs_set_stack_extent_owner(&extent_item, owner);
- WARN_ON(num_blocks < 1);
- ret = find_free_extent(trans, root, num_blocks, empty_size,
- search_start, search_end, hint_block, ins,
+ WARN_ON(num_bytes < root->sectorsize);
+ ret = find_free_extent(trans, root, num_bytes, empty_size,
+ search_start, search_end, hint_byte, ins,
trans->alloc_exclude_start,
trans->alloc_exclude_nr, data);
BUG_ON(ret);
@@ -1093,21 +1099,18 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
return ret;
/* block accounting for super block */
- super_blocks_used = btrfs_super_blocks_used(&info->super_copy);
- btrfs_set_super_blocks_used(&info->super_copy, super_blocks_used +
- num_blocks);
+ super_used = btrfs_super_bytes_used(&info->super_copy);
+ btrfs_set_super_bytes_used(&info->super_copy, super_used + num_bytes);
/* block accounting for root item */
- root_blocks_used = btrfs_root_used(&root->root_item);
- btrfs_set_root_used(&root->root_item, root_blocks_used +
- num_blocks);
+ root_used = btrfs_root_used(&root->root_item);
+ btrfs_set_root_used(&root->root_item, root_used + num_bytes);
clear_extent_dirty(&root->fs_info->free_space_cache,
ins->objectid, ins->objectid + ins->offset - 1,
GFP_NOFS);
if (root == extent_root) {
- BUG_ON(num_blocks != 1);
set_extent_bits(&root->fs_info->extent_ins, ins->objectid,
ins->objectid + ins->offset - 1,
EXTENT_LOCKED, GFP_NOFS);
@@ -1146,7 +1149,8 @@ update_block:
* returns the tree buffer or NULL.
*/
struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 hint,
+ struct btrfs_root *root,
+ u32 blocksize, u64 hint,
u64 empty_size)
{
struct btrfs_key ins;
@@ -1154,14 +1158,15 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
struct extent_buffer *buf;
ret = btrfs_alloc_extent(trans, root, root->root_key.objectid,
- 1, empty_size, hint, (u64)-1, &ins, 0);
+ blocksize, empty_size, hint,
+ (u64)-1, &ins, 0);
if (ret) {
BUG_ON(ret > 0);
return ERR_PTR(ret);
}
- buf = btrfs_find_create_tree_block(root, ins.objectid);
+ buf = btrfs_find_create_tree_block(root, ins.objectid, blocksize);
if (!buf) {
- btrfs_free_extent(trans, root, ins.objectid, 1, 0);
+ btrfs_free_extent(trans, root, ins.objectid, blocksize, 0);
return ERR_PTR(-ENOMEM);
}
btrfs_set_buffer_uptodate(buf);
@@ -1191,7 +1196,7 @@ static int drop_leaf_ref(struct btrfs_trans_handle *trans,
BUG_ON(!btrfs_is_leaf(leaf));
nritems = btrfs_header_nritems(leaf);
for (i = 0; i < nritems; i++) {
- u64 disk_blocknr;
+ u64 disk_bytenr;
btrfs_item_key_to_cpu(leaf, &key, i);
if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
@@ -1204,11 +1209,11 @@ static int drop_leaf_ref(struct btrfs_trans_handle *trans,
* FIXME make sure to insert a trans record that
* repeats the snapshot del on crash
*/
- disk_blocknr = btrfs_file_extent_disk_blocknr(leaf, fi);
- if (disk_blocknr == 0)
+ disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
+ if (disk_bytenr == 0)
continue;
- ret = btrfs_free_extent(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(leaf, fi), 0);
+ ret = btrfs_free_extent(trans, root, disk_bytenr,
+ btrfs_file_extent_disk_num_bytes(leaf, fi), 0);
BUG_ON(ret);
}
return 0;
@@ -1219,19 +1224,23 @@ static void reada_walk_down(struct btrfs_root *root,
{
int i;
u32 nritems;
- u64 blocknr;
+ u64 bytenr;
int ret;
u32 refs;
+ int level;
+ u32 blocksize;
nritems = btrfs_header_nritems(node);
+ level = btrfs_header_level(node);
for (i = 0; i < nritems; i++) {
- blocknr = btrfs_node_blockptr(node, i);
- ret = lookup_extent_ref(NULL, root, blocknr, 1, &refs);
+ bytenr = btrfs_node_blockptr(node, i);
+ blocksize = btrfs_level_size(root, level - 1);
+ ret = lookup_extent_ref(NULL, root, bytenr, blocksize, &refs);
BUG_ON(ret);
if (refs != 1)
continue;
mutex_unlock(&root->fs_info->fs_mutex);
- ret = readahead_tree_block(root, blocknr);
+ ret = readahead_tree_block(root, bytenr, blocksize);
cond_resched();
mutex_lock(&root->fs_info->fs_mutex);
if (ret)
@@ -1248,15 +1257,16 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
{
struct extent_buffer *next;
struct extent_buffer *cur;
- u64 blocknr;
+ u64 bytenr;
+ u32 blocksize;
int ret;
u32 refs;
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
ret = lookup_extent_ref(trans, root,
- extent_buffer_blocknr(path->nodes[*level]),
- 1, &refs);
+ path->nodes[*level]->start,
+ path->nodes[*level]->len, &refs);
BUG_ON(ret);
if (refs > 1)
goto out;
@@ -1283,30 +1293,33 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
BUG_ON(ret);
break;
}
- blocknr = btrfs_node_blockptr(cur, path->slots[*level]);
- ret = lookup_extent_ref(trans, root, blocknr, 1, &refs);
+ bytenr = btrfs_node_blockptr(cur, path->slots[*level]);
+ blocksize = btrfs_level_size(root, *level - 1);
+ ret = lookup_extent_ref(trans, root, bytenr, blocksize, &refs);
BUG_ON(ret);
if (refs != 1) {
path->slots[*level]++;
- ret = btrfs_free_extent(trans, root, blocknr, 1, 1);
+ ret = btrfs_free_extent(trans, root, bytenr,
+ blocksize, 1);
BUG_ON(ret);
continue;
}
- next = btrfs_find_tree_block(root, blocknr);
+ next = btrfs_find_tree_block(root, bytenr, blocksize);
if (!next || !btrfs_buffer_uptodate(next)) {
free_extent_buffer(next);
mutex_unlock(&root->fs_info->fs_mutex);
- next = read_tree_block(root, blocknr);
+ next = read_tree_block(root, bytenr, blocksize);
mutex_lock(&root->fs_info->fs_mutex);
/* we dropped the lock, check one more time */
- ret = lookup_extent_ref(trans, root, blocknr, 1, &refs);
+ ret = lookup_extent_ref(trans, root, bytenr,
+ blocksize, &refs);
BUG_ON(ret);
if (refs != 1) {
path->slots[*level]++;
free_extent_buffer(next);
ret = btrfs_free_extent(trans, root,
- blocknr, 1, 1);
+ bytenr, blocksize, 1);
BUG_ON(ret);
continue;
}
@@ -1321,8 +1334,8 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
out:
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
- ret = btrfs_free_extent(trans, root,
- extent_buffer_blocknr(path->nodes[*level]), 1, 1);
+ ret = btrfs_free_extent(trans, root, path->nodes[*level]->start,
+ path->nodes[*level]->len, 1);
free_extent_buffer(path->nodes[*level]);
path->nodes[*level] = NULL;
*level += 1;
@@ -1359,8 +1372,8 @@ static int walk_up_tree(struct btrfs_trans_handle *trans, struct btrfs_root
return 0;
} else {
ret = btrfs_free_extent(trans, root,
- extent_buffer_blocknr(path->nodes[*level]),
- 1, 1);
+ path->nodes[*level]->start,
+ path->nodes[*level]->len, 1);
BUG_ON(ret);
free_extent_buffer(path->nodes[*level]);
path->nodes[*level] = NULL;
@@ -1476,16 +1489,12 @@ int btrfs_read_block_groups(struct btrfs_root *root)
struct btrfs_key key;
struct btrfs_key found_key;
struct extent_buffer *leaf;
- u64 group_size_blocks;
block_group_cache = &info->block_group_cache;
- group_size_blocks = BTRFS_BLOCK_GROUP_SIZE >>
- info->sb->s_blocksize_bits;
-
root = info->extent_root;
key.objectid = 0;
- key.offset = group_size_blocks;
+ key.offset = BTRFS_BLOCK_GROUP_SIZE;
btrfs_set_key_type(&key, BTRFS_BLOCK_GROUP_ITEM_KEY);
path = btrfs_alloc_path();
@@ -1532,7 +1541,7 @@ int btrfs_read_block_groups(struct btrfs_root *root)
(u64)cache);
if (key.objectid >=
- btrfs_super_total_blocks(&info->super_copy))
+ btrfs_super_total_bytes(&info->super_copy))
break;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 10:55:05 +0000