summaryrefslogtreecommitdiffstats
path: root/fs/btrfs/extent-tree.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c294
1 files changed, 150 insertions, 144 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f261a8326cd..089c41cbca7 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -33,7 +33,7 @@ static int cache_block_group(struct btrfs_root *root,
struct btrfs_path *path;
int ret;
struct btrfs_key key;
- struct btrfs_leaf *leaf;
+ struct extent_buffer *leaf;
struct radix_tree_root *extent_radix;
int slot;
u64 i;
@@ -56,7 +56,6 @@ static int cache_block_group(struct btrfs_root *root,
path->reada = 2;
first_free = block_group->key.objectid;
key.objectid = block_group->key.objectid;
- key.flags = 0;
key.offset = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
@@ -69,9 +68,9 @@ static int cache_block_group(struct btrfs_root *root,
path->slots[0]--;
while(1) {
- leaf = btrfs_buffer_leaf(path->nodes[0]);
+ leaf = path->nodes[0];
slot = path->slots[0];
- if (slot >= btrfs_header_nritems(&leaf->header)) {
+ if (slot >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root, path);
if (ret < 0)
goto err;
@@ -82,7 +81,7 @@ static int cache_block_group(struct btrfs_root *root,
}
}
- btrfs_disk_key_to_cpu(&key, &leaf->items[slot].key);
+ btrfs_item_key_to_cpu(leaf, &key, slot);
if (key.objectid < block_group->key.objectid) {
if (key.objectid + key.offset > first_free)
first_free = key.objectid + key.offset;
@@ -116,8 +115,7 @@ next:
hole_size = block_group->key.objectid +
block_group->key.offset - last;
for (i = 0; i < hole_size; i++) {
- set_radix_bit(extent_radix,
- last + i);
+ set_radix_bit(extent_radix, last + i);
}
}
block_group->cached = 1;
@@ -366,7 +364,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_path *path;
int ret;
struct btrfs_key key;
- struct btrfs_leaf *l;
+ struct extent_buffer *l;
struct btrfs_extent_item *item;
u32 refs;
@@ -375,7 +373,6 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
return -ENOMEM;
key.objectid = blocknr;
- key.flags = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
key.offset = num_blocks;
ret = btrfs_search_slot(trans, root->fs_info->extent_root, &key, path,
@@ -386,10 +383,10 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
BUG();
}
BUG_ON(ret != 0);
- l = btrfs_buffer_leaf(path->nodes[0]);
+ l = path->nodes[0];
item = btrfs_item_ptr(l, path->slots[0], struct btrfs_extent_item);
- refs = btrfs_extent_refs(item);
- btrfs_set_extent_refs(item, refs + 1);
+ refs = btrfs_extent_refs(l, item);
+ btrfs_set_extent_refs(l, item, refs + 1);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(root->fs_info->extent_root, path);
@@ -414,23 +411,25 @@ static int lookup_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_path *path;
int ret;
struct btrfs_key key;
- struct btrfs_leaf *l;
+ struct extent_buffer *l;
struct btrfs_extent_item *item;
path = btrfs_alloc_path();
key.objectid = blocknr;
key.offset = num_blocks;
- key.flags = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
ret = btrfs_search_slot(trans, root->fs_info->extent_root, &key, path,
0, 0);
if (ret < 0)
goto out;
- if (ret != 0)
+ if (ret != 0) {
+ btrfs_print_leaf(root, path->nodes[0]);
+ printk("failed to find block number %Lu\n", blocknr);
BUG();
- l = btrfs_buffer_leaf(path->nodes[0]);
+ }
+ l = path->nodes[0];
item = btrfs_item_ptr(l, path->slots[0], struct btrfs_extent_item);
- *refs = btrfs_extent_refs(item);
+ *refs = btrfs_extent_refs(l, item);
out:
btrfs_free_path(path);
return 0;
@@ -439,16 +438,16 @@ out:
int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
- return btrfs_inc_extent_ref(trans, root, bh_blocknr(root->node), 1);
+ return btrfs_inc_extent_ref(trans, root,
+ extent_buffer_blocknr(root->node), 1);
}
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct buffer_head *buf)
+ struct extent_buffer *buf)
{
u64 blocknr;
- struct btrfs_node *buf_node;
- struct btrfs_leaf *buf_leaf;
- struct btrfs_disk_key *key;
+ u32 nritems;
+ struct btrfs_key key;
struct btrfs_file_extent_item *fi;
int i;
int leaf;
@@ -458,31 +457,31 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
if (!root->ref_cows)
return 0;
- buf_node = btrfs_buffer_node(buf);
- leaf = btrfs_is_leaf(buf_node);
- buf_leaf = btrfs_buffer_leaf(buf);
- for (i = 0; i < btrfs_header_nritems(&buf_node->header); i++) {
+
+ leaf = btrfs_is_leaf(buf);
+ nritems = btrfs_header_nritems(buf);
+ for (i = 0; i < nritems; i++) {
if (leaf) {
u64 disk_blocknr;
- key = &buf_leaf->items[i].key;
- if (btrfs_disk_key_type(key) != BTRFS_EXTENT_DATA_KEY)
+ btrfs_item_key_to_cpu(buf, &key, i);
+ if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
continue;
- fi = btrfs_item_ptr(buf_leaf, i,
+ fi = btrfs_item_ptr(buf, i,
struct btrfs_file_extent_item);
- if (btrfs_file_extent_type(fi) ==
+ if (btrfs_file_extent_type(buf, fi) ==
BTRFS_FILE_EXTENT_INLINE)
continue;
- disk_blocknr = btrfs_file_extent_disk_blocknr(fi);
+ disk_blocknr = btrfs_file_extent_disk_blocknr(buf, fi);
if (disk_blocknr == 0)
continue;
ret = btrfs_inc_extent_ref(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(fi));
+ btrfs_file_extent_disk_num_blocks(buf, fi));
if (ret) {
faili = i;
goto fail;
}
} else {
- blocknr = btrfs_node_blockptr(buf_node, i);
+ blocknr = btrfs_node_blockptr(buf, i);
ret = btrfs_inc_extent_ref(trans, root, blocknr, 1);
if (ret) {
faili = i;
@@ -496,22 +495,23 @@ fail:
for (i =0; i < faili; i++) {
if (leaf) {
u64 disk_blocknr;
- key = &buf_leaf->items[i].key;
- if (btrfs_disk_key_type(key) != BTRFS_EXTENT_DATA_KEY)
+ btrfs_item_key_to_cpu(buf, &key, i);
+ if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
continue;
- fi = btrfs_item_ptr(buf_leaf, i,
+ fi = btrfs_item_ptr(buf, i,
struct btrfs_file_extent_item);
- if (btrfs_file_extent_type(fi) ==
+ if (btrfs_file_extent_type(buf, fi) ==
BTRFS_FILE_EXTENT_INLINE)
continue;
- disk_blocknr = btrfs_file_extent_disk_blocknr(fi);
+ disk_blocknr = btrfs_file_extent_disk_blocknr(buf, fi);
if (disk_blocknr == 0)
continue;
err = btrfs_free_extent(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(fi), 0);
+ btrfs_file_extent_disk_num_blocks(buf,
+ fi), 0);
BUG_ON(err);
} else {
- blocknr = btrfs_node_blockptr(buf_node, i);
+ blocknr = btrfs_node_blockptr(buf, i);
err = btrfs_free_extent(trans, root, blocknr, 1, 0);
BUG_ON(err);
}
@@ -527,16 +527,18 @@ static int write_one_cache_group(struct btrfs_trans_handle *trans,
int ret;
int pending_ret;
struct btrfs_root *extent_root = root->fs_info->extent_root;
- struct btrfs_block_group_item *bi;
+ unsigned long bi;
+ struct extent_buffer *leaf;
ret = btrfs_search_slot(trans, extent_root, &cache->key, path, 0, 1);
if (ret < 0)
goto fail;
BUG_ON(ret);
- bi = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
- struct btrfs_block_group_item);
- memcpy(bi, &cache->item, sizeof(*bi));
- btrfs_mark_buffer_dirty(path->nodes[0]);
+
+ leaf = path->nodes[0];
+ bi = btrfs_item_ptr_offset(leaf, path->slots[0]);
+ write_extent_buffer(leaf, &cache->item, bi, sizeof(cache->item));
+ btrfs_mark_buffer_dirty(leaf);
btrfs_release_path(extent_root, path);
fail:
finish_current_insert(trans, extent_root);
@@ -768,11 +770,11 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
unsigned long gang[8];
struct btrfs_fs_info *info = extent_root->fs_info;
- btrfs_set_extent_refs(&extent_item, 1);
+ btrfs_set_stack_extent_refs(&extent_item, 1);
ins.offset = 1;
- ins.flags = 0;
btrfs_set_key_type(&ins, BTRFS_EXTENT_ITEM_KEY);
- btrfs_set_extent_owner(&extent_item, extent_root->root_key.objectid);
+ btrfs_set_stack_extent_owner(&extent_item,
+ extent_root->root_key.objectid);
while(1) {
ret = find_first_radix_bit(&info->extent_ins_radix, gang, 0,
@@ -795,23 +797,20 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
static int pin_down_block(struct btrfs_root *root, u64 blocknr, int pending)
{
int err;
- struct btrfs_header *header;
- struct buffer_head *bh;
+ struct extent_buffer *buf;
if (!pending) {
- bh = btrfs_find_tree_block(root, blocknr);
- if (bh) {
- if (buffer_uptodate(bh)) {
+ buf = btrfs_find_tree_block(root, blocknr);
+ if (buf) {
+ if (btrfs_buffer_uptodate(buf)) {
u64 transid =
root->fs_info->running_transaction->transid;
- header = btrfs_buffer_header(bh);
- if (btrfs_header_generation(header) ==
- transid) {
- btrfs_block_release(root, bh);
+ if (btrfs_header_generation(buf) == transid) {
+ free_extent_buffer(buf);
return 0;
}
}
- btrfs_block_release(root, bh);
+ free_extent_buffer(buf);
}
err = set_radix_bit(&root->fs_info->pinned_radix, blocknr);
if (!err) {
@@ -839,12 +838,12 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
struct btrfs_key key;
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_root *extent_root = info->extent_root;
+ struct extent_buffer *leaf;
int ret;
struct btrfs_extent_item *ei;
u32 refs;
key.objectid = blocknr;
- key.flags = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
key.offset = num_blocks;
@@ -856,12 +855,16 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
if (ret < 0)
return ret;
BUG_ON(ret);
- ei = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
+
+ leaf = path->nodes[0];
+ ei = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_extent_item);
- BUG_ON(ei->refs == 0);
- refs = btrfs_extent_refs(ei) - 1;
- btrfs_set_extent_refs(ei, refs);
- btrfs_mark_buffer_dirty(path->nodes[0]);
+ refs = btrfs_extent_refs(leaf, ei);
+ BUG_ON(refs == 0);
+ refs -= 1;
+ btrfs_set_extent_refs(leaf, ei, refs);
+ btrfs_mark_buffer_dirty(leaf);
+
if (refs == 0) {
u64 super_blocks_used, root_blocks_used;
@@ -876,8 +879,8 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
super_blocks_used - num_blocks);
/* block accounting for root item */
- root_blocks_used = btrfs_root_blocks_used(&root->root_item);
- btrfs_set_root_blocks_used(&root->root_item,
+ root_blocks_used = btrfs_root_used(&root->root_item);
+ btrfs_set_root_used(&root->root_item,
root_blocks_used - num_blocks);
ret = btrfs_del_item(trans, extent_root, path);
@@ -984,7 +987,7 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
u64 test_block;
u64 orig_search_start = search_start;
int start_found;
- struct btrfs_leaf *l;
+ 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;
@@ -994,10 +997,10 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
int wrapped = 0;
WARN_ON(num_blocks < 1);
- ins->flags = 0;
btrfs_set_key_type(ins, BTRFS_EXTENT_ITEM_KEY);
- level = btrfs_header_level(btrfs_buffer_header(root->node));
+ level = btrfs_header_level(root->node);
+
if (search_end == (u64)-1)
search_end = btrfs_super_total_blocks(&info->super_copy);
if (hint_block) {
@@ -1034,8 +1037,9 @@ check_failed:
path->slots[0]--;
}
- l = btrfs_buffer_leaf(path->nodes[0]);
- btrfs_disk_key_to_cpu(&key, &l->items[path->slots[0]].key);
+ l = path->nodes[0];
+ btrfs_item_key_to_cpu(l, &key, path->slots[0]);
+
/*
* a rare case, go back one key if we hit a block group item
* instead of an extent item
@@ -1055,9 +1059,9 @@ check_failed:
}
while (1) {
- l = btrfs_buffer_leaf(path->nodes[0]);
+ l = path->nodes[0];
slot = path->slots[0];
- if (slot >= btrfs_header_nritems(&l->header)) {
+ if (slot >= btrfs_header_nritems(l)) {
ret = btrfs_next_leaf(root, path);
if (ret == 0)
continue;
@@ -1075,7 +1079,7 @@ check_failed:
goto check_pending;
}
- btrfs_disk_key_to_cpu(&key, &l->items[slot].key);
+ btrfs_item_key_to_cpu(l, &key, slot);
if (key.objectid >= search_start && key.objectid > last_block &&
start_found) {
if (last_block < search_start)
@@ -1183,8 +1187,8 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root = info->extent_root;
struct btrfs_extent_item extent_item;
- btrfs_set_extent_refs(&extent_item, 1);
- btrfs_set_extent_owner(&extent_item, owner);
+ 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,
@@ -1201,8 +1205,8 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
num_blocks);
/* block accounting for root item */
- root_blocks_used = btrfs_root_blocks_used(&root->root_item);
- btrfs_set_root_blocks_used(&root->root_item, root_blocks_used +
+ root_blocks_used = btrfs_root_used(&root->root_item);
+ btrfs_set_root_used(&root->root_item, root_blocks_used +
num_blocks);
if (root == extent_root) {
@@ -1241,13 +1245,13 @@ update_block:
* helper function to allocate a block for a given tree
* returns the tree buffer or NULL.
*/
-struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 hint,
- u64 empty_size)
+struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 hint,
+ u64 empty_size)
{
struct btrfs_key ins;
int ret;
- struct buffer_head *buf;
+ struct extent_buffer *buf;
ret = btrfs_alloc_extent(trans, root, root->root_key.objectid,
1, empty_size, hint, (u64)-1, &ins, 0);
@@ -1260,53 +1264,57 @@ struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
btrfs_free_extent(trans, root, ins.objectid, 1, 0);
return ERR_PTR(-ENOMEM);
}
- WARN_ON(buffer_dirty(buf));
- set_buffer_uptodate(buf);
+ btrfs_set_buffer_uptodate(buf);
+ set_extent_dirty(&trans->transaction->dirty_pages, buf->start,
+ buf->start + buf->len - 1, GFP_NOFS);
+ /*
set_buffer_checked(buf);
set_buffer_defrag(buf);
- set_radix_bit(&trans->transaction->dirty_pages, buf->b_page->index);
+ */
+ /* FIXME!!!!!!!!!!!!!!!!
+ set_radix_bit(&trans->transaction->dirty_pages, buf->pages[0]->index);
+ */
trans->blocks_used++;
return buf;
}
static int drop_leaf_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, struct buffer_head *cur)
+ struct btrfs_root *root, struct extent_buffer *leaf)
{
- struct btrfs_disk_key *key;
- struct btrfs_leaf *leaf;
+ struct btrfs_key key;
struct btrfs_file_extent_item *fi;
int i;
int nritems;
int ret;
- BUG_ON(!btrfs_is_leaf(btrfs_buffer_node(cur)));
- leaf = btrfs_buffer_leaf(cur);
- nritems = btrfs_header_nritems(&leaf->header);
+ BUG_ON(!btrfs_is_leaf(leaf));
+ nritems = btrfs_header_nritems(leaf);
for (i = 0; i < nritems; i++) {
u64 disk_blocknr;
- key = &leaf->items[i].key;
- if (btrfs_disk_key_type(key) != BTRFS_EXTENT_DATA_KEY)
+
+ btrfs_item_key_to_cpu(leaf, &key, i);
+ if (btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY)
continue;
fi = btrfs_item_ptr(leaf, i, struct btrfs_file_extent_item);
- if (btrfs_file_extent_type(fi) == BTRFS_FILE_EXTENT_INLINE)
+ if (btrfs_file_extent_type(leaf, fi) ==
+ BTRFS_FILE_EXTENT_INLINE)
continue;
/*
* FIXME make sure to insert a trans record that
* repeats the snapshot del on crash
*/
- disk_blocknr = btrfs_file_extent_disk_blocknr(fi);
+ disk_blocknr = btrfs_file_extent_disk_blocknr(leaf, fi);
if (disk_blocknr == 0)
continue;
ret = btrfs_free_extent(trans, root, disk_blocknr,
- btrfs_file_extent_disk_num_blocks(fi),
- 0);
+ btrfs_file_extent_disk_num_blocks(leaf, fi), 0);
BUG_ON(ret);
}
return 0;
}
static void reada_walk_down(struct btrfs_root *root,
- struct btrfs_node *node)
+ struct extent_buffer *node)
{
int i;
u32 nritems;
@@ -1314,7 +1322,7 @@ static void reada_walk_down(struct btrfs_root *root,
int ret;
u32 refs;
- nritems = btrfs_header_nritems(&node->header);
+ nritems = btrfs_header_nritems(node);
for (i = 0; i < nritems; i++) {
blocknr = btrfs_node_blockptr(node, i);
ret = lookup_extent_ref(NULL, root, blocknr, 1, &refs);
@@ -1337,16 +1345,17 @@ static void reada_walk_down(struct btrfs_root *root,
static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, int *level)
{
- struct buffer_head *next;
- struct buffer_head *cur;
+ struct extent_buffer *next;
+ struct extent_buffer *cur;
u64 blocknr;
int ret;
u32 refs;
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
- ret = lookup_extent_ref(trans, root, bh_blocknr(path->nodes[*level]),
- 1, &refs);
+ ret = lookup_extent_ref(trans, root,
+ extent_buffer_blocknr(path->nodes[*level]),
+ 1, &refs);
BUG_ON(ret);
if (refs > 1)
goto out;
@@ -1360,21 +1369,20 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
cur = path->nodes[*level];
if (*level > 0 && path->slots[*level] == 0)
- reada_walk_down(root, btrfs_buffer_node(cur));
+ reada_walk_down(root, cur);
- if (btrfs_header_level(btrfs_buffer_header(cur)) != *level)
+ if (btrfs_header_level(cur) != *level)
WARN_ON(1);
if (path->slots[*level] >=
- btrfs_header_nritems(btrfs_buffer_header(cur)))
+ btrfs_header_nritems(cur))
break;
if (*level == 0) {
ret = drop_leaf_ref(trans, root, cur);
BUG_ON(ret);
break;
}
- blocknr = btrfs_node_blockptr(btrfs_buffer_node(cur),
- path->slots[*level]);
+ blocknr = btrfs_node_blockptr(cur, path->slots[*level]);
ret = lookup_extent_ref(trans, root, blocknr, 1, &refs);
BUG_ON(ret);
if (refs != 1) {
@@ -1384,8 +1392,8 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
continue;
}
next = btrfs_find_tree_block(root, blocknr);
- if (!next || !buffer_uptodate(next)) {
- brelse(next);
+ if (!next || !btrfs_buffer_uptodate(next)) {
+ free_extent_buffer(next);
mutex_unlock(&root->fs_info->fs_mutex);
next = read_tree_block(root, blocknr);
mutex_lock(&root->fs_info->fs_mutex);
@@ -1395,7 +1403,7 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
BUG_ON(ret);
if (refs != 1) {
path->slots[*level]++;
- brelse(next);
+ free_extent_buffer(next);
ret = btrfs_free_extent(trans, root,
blocknr, 1, 1);
BUG_ON(ret);
@@ -1404,17 +1412,17 @@ static int walk_down_tree(struct btrfs_trans_handle *trans, struct btrfs_root
}
WARN_ON(*level <= 0);
if (path->nodes[*level-1])
- btrfs_block_release(root, path->nodes[*level-1]);
+ free_extent_buffer(path->nodes[*level-1]);
path->nodes[*level-1] = next;
- *level = btrfs_header_level(btrfs_buffer_header(next));
+ *level = btrfs_header_level(next);
path->slots[*level] = 0;
}
out:
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
ret = btrfs_free_extent(trans, root,
- bh_blocknr(path->nodes[*level]), 1, 1);
- btrfs_block_release(root, path->nodes[*level]);
+ extent_buffer_blocknr(path->nodes[*level]), 1, 1);
+ free_extent_buffer(path->nodes[*level]);
path->nodes[*level] = NULL;
*level += 1;
BUG_ON(ret);
@@ -1436,24 +1444,24 @@ static int walk_up_tree(struct btrfs_trans_handle *trans, struct btrfs_root
for(i = *level; i < BTRFS_MAX_LEVEL - 1 && path->nodes[i]; i++) {
slot = path->slots[i];
- if (slot < btrfs_header_nritems(
- btrfs_buffer_header(path->nodes[i])) - 1) {
- struct btrfs_node *node;
- node = btrfs_buffer_node(path->nodes[i]);
+ if (slot < btrfs_header_nritems(path->nodes[i]) - 1) {
+ struct extent_buffer *node;
+ struct btrfs_disk_key disk_key;
+ node = path->nodes[i];
path->slots[i]++;
*level = i;
WARN_ON(*level == 0);
+ btrfs_node_key(node, &disk_key, path->slots[i]);
memcpy(&root_item->drop_progress,
- &node->ptrs[path->slots[i]].key,
- sizeof(root_item->drop_progress));
+ &disk_key, sizeof(disk_key));
root_item->drop_level = i;
return 0;
} else {
ret = btrfs_free_extent(trans, root,
- bh_blocknr(path->nodes[*level]),
- 1, 1);
+ extent_buffer_blocknr(path->nodes[*level]),
+ 1, 1);
BUG_ON(ret);
- btrfs_block_release(root, path->nodes[*level]);
+ free_extent_buffer(path->nodes[*level]);
path->nodes[*level] = NULL;
*level = i + 1;
}
@@ -1480,15 +1488,15 @@ int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
path = btrfs_alloc_path();
BUG_ON(!path);
- level = btrfs_header_level(btrfs_buffer_header(root->node));
+ level = btrfs_header_level(root->node);
orig_level = level;
if (btrfs_disk_key_objectid(&root_item->drop_progress) == 0) {
path->nodes[level] = root->node;
path->slots[level] = 0;
} else {
struct btrfs_key key;
- struct btrfs_disk_key *found_key;
- struct btrfs_node *node;
+ struct btrfs_disk_key found_key;
+ struct extent_buffer *node;
btrfs_disk_key_to_cpu(&key, &root_item->drop_progress);
level = root_item->drop_level;
@@ -1498,10 +1506,10 @@ int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
ret = wret;
goto out;
}
- node = btrfs_buffer_node(path->nodes[level]);
- found_key = &node->ptrs[path->slots[level]].key;
- WARN_ON(memcmp(found_key, &root_item->drop_progress,
- sizeof(*found_key)));
+ node = path->nodes[level];
+ btrfs_node_key(node, &found_key, path->slots[level]);
+ WARN_ON(memcmp(&found_key, &root_item->drop_progress,
+ sizeof(found_key)));
}
while(1) {
wret = walk_down_tree(trans, root, path, &level);
@@ -1516,12 +1524,12 @@ int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
if (wret < 0)
ret = wret;
ret = -EAGAIN;
- get_bh(root->node);
+ extent_buffer_get(root->node);
break;
}
for (i = 0; i <= orig_level; i++) {
if (path->nodes[i]) {
- btrfs_block_release(root, path->nodes[i]);
+ free_extent_buffer(path->nodes[i]);
path->nodes[i] = 0;
}
}
@@ -1581,13 +1589,12 @@ int btrfs_read_block_groups(struct btrfs_root *root)
struct btrfs_path *path;
int ret;
int err = 0;
- struct btrfs_block_group_item *bi;
struct btrfs_block_group_cache *cache;
struct btrfs_fs_info *info = root->fs_info;
struct radix_tree_root *radix;
struct btrfs_key key;
struct btrfs_key found_key;
- struct btrfs_leaf *leaf;
+ struct extent_buffer *leaf;
u64 group_size_blocks;
u64 used;
@@ -1596,7 +1603,6 @@ int btrfs_read_block_groups(struct btrfs_root *root)
root = info->extent_root;
key.objectid = 0;
key.offset = group_size_blocks;
- key.flags = 0;
btrfs_set_key_type(&key, BTRFS_BLOCK_GROUP_ITEM_KEY);
path = btrfs_alloc_path();
@@ -1610,18 +1616,18 @@ int btrfs_read_block_groups(struct btrfs_root *root)
err = ret;
break;
}
- leaf = btrfs_buffer_leaf(path->nodes[0]);
- btrfs_disk_key_to_cpu(&found_key,
- &leaf->items[path->slots[0]].key);
+ leaf = path->nodes[0];
+ btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
cache = kmalloc(sizeof(*cache), GFP_NOFS);
if (!cache) {
err = -1;
break;
}
- bi = btrfs_item_ptr(leaf, path->slots[0],
- struct btrfs_block_group_item);
- if (bi->flags & BTRFS_BLOCK_GROUP_DATA) {
+ read_extent_buffer(leaf, &cache->item,
+ btrfs_item_ptr_offset(leaf, path->slots[0]),
+ sizeof(cache->item));
+ if (cache->item.flags & BTRFS_BLOCK_GROUP_DATA) {
radix = &info->block_group_data_radix;
cache->data = 1;
} else {
@@ -1629,7 +1635,6 @@ int btrfs_read_block_groups(struct btrfs_root *root)
cache->data = 0;
}
- memcpy(&cache->item, bi, sizeof(*bi));
memcpy(&cache->key, &found_key, sizeof(found_key));
cache->last_alloc = cache->key.objectid;
cache->first_free = cache->key.objectid;
@@ -1640,11 +1645,12 @@ int btrfs_read_block_groups(struct btrfs_root *root)
key.objectid = found_key.objectid + found_key.offset;
btrfs_release_path(root, path);
+
ret = radix_tree_insert(radix, found_key.objectid +
found_key.offset - 1,
(void *)cache);
BUG_ON(ret);
- used = btrfs_block_group_used(bi);
+ used = btrfs_block_group_used(&cache->item);
if (used < div_factor(key.offset, 8)) {
radix_tree_tag_set(radix, found_key.objectid +
found_key.offset - 1,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 20:57:33 +0000