Btrfs: variable block size support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index dc62018..ece8de7 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -47,7 +47,7 @@
return 0;
}
cow = btrfs_alloc_free_block(root);
- memcpy(&cow->node, &buf->node, sizeof(buf->node));
+ memcpy(&cow->node, &buf->node, root->blocksize);
btrfs_set_header_blocknr(&cow->node.header, cow->blocknr);
*cow_ret = cow;
btrfs_inc_ref(root, buf);
@@ -72,11 +72,12 @@
* this returns the address of the start of the last item,
* which is the stop of the leaf data stack
*/
-static inline unsigned int leaf_data_end(struct btrfs_leaf *leaf)
+static inline unsigned int leaf_data_end(struct btrfs_root *root,
+ struct btrfs_leaf *leaf)
{
u32 nr = btrfs_header_nritems(&leaf->header);
if (nr == 0)
- return sizeof(leaf->data);
+ return BTRFS_LEAF_DATA_SIZE(root);
return btrfs_item_offset(leaf->items + nr - 1);
}
@@ -85,12 +86,12 @@
* the start of the leaf data. IOW, how much room
* the leaf has left for both items and data
*/
-int btrfs_leaf_free_space(struct btrfs_leaf *leaf)
+int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf)
{
- int data_end = leaf_data_end(leaf);
+ int data_end = leaf_data_end(root, leaf);
int nritems = btrfs_header_nritems(&leaf->header);
char *items_end = (char *)(leaf->items + nritems + 1);
- return (char *)(leaf->data + data_end) - (char *)items_end;
+ return (char *)(btrfs_leaf_data(leaf) + data_end) - (char *)items_end;
}
/*
@@ -117,7 +118,8 @@
return 0;
}
-static int check_node(struct btrfs_path *path, int level)
+static int check_node(struct btrfs_root *root, struct btrfs_path *path,
+ int level)
{
int i;
struct btrfs_node *parent = NULL;
@@ -131,22 +133,23 @@
BUG_ON(nritems == 0);
if (parent) {
struct btrfs_disk_key *parent_key;
- parent_key = &parent->keys[parent_slot];
- BUG_ON(memcmp(parent_key, node->keys,
+ parent_key = &parent->ptrs[parent_slot].key;
+ BUG_ON(memcmp(parent_key, &node->ptrs[0].key,
sizeof(struct btrfs_disk_key)));
BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
btrfs_header_blocknr(&node->header));
}
- BUG_ON(nritems > NODEPTRS_PER_BLOCK);
+ BUG_ON(nritems > BTRFS_NODEPTRS_PER_BLOCK(root));
for (i = 0; nritems > 1 && i < nritems - 2; i++) {
struct btrfs_key cpukey;
- btrfs_disk_key_to_cpu(&cpukey, &node->keys[i + 1]);
- BUG_ON(comp_keys(&node->keys[i], &cpukey) >= 0);
+ btrfs_disk_key_to_cpu(&cpukey, &node->ptrs[i + 1].key);
+ BUG_ON(comp_keys(&node->ptrs[i].key, &cpukey) >= 0);
}
return 0;
}
-static int check_leaf(struct btrfs_path *path, int level)
+static int check_leaf(struct btrfs_root *root, struct btrfs_path *path,
+ int level)
{
int i;
struct btrfs_leaf *leaf = &path->nodes[level]->leaf;
@@ -157,14 +160,14 @@
if (path->nodes[level + 1])
parent = &path->nodes[level + 1]->node;
parent_slot = path->slots[level + 1];
- BUG_ON(btrfs_leaf_free_space(leaf) < 0);
+ BUG_ON(btrfs_leaf_free_space(root, leaf) < 0);
if (nritems == 0)
return 0;
if (parent) {
struct btrfs_disk_key *parent_key;
- parent_key = &parent->keys[parent_slot];
+ parent_key = &parent->ptrs[parent_slot].key;
BUG_ON(memcmp(parent_key, &leaf->items[0].key,
sizeof(struct btrfs_disk_key)));
BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
@@ -180,17 +183,18 @@
if (i == 0) {
BUG_ON(btrfs_item_offset(leaf->items + i) +
btrfs_item_size(leaf->items + i) !=
- LEAF_DATA_SIZE);
+ BTRFS_LEAF_DATA_SIZE(root));
}
}
return 0;
}
-static int check_block(struct btrfs_path *path, int level)
+static int check_block(struct btrfs_root *root, struct btrfs_path *path,
+ int level)
{
if (level == 0)
- return check_leaf(path, level);
- return check_node(path, level);
+ return check_leaf(root, path, level);
+ return check_node(root, path, level);
}
/*
@@ -242,8 +246,8 @@
key, btrfs_header_nritems(&c->header),
slot);
} else {
- return generic_bin_search((void *)c->keys,
- sizeof(struct btrfs_disk_key),
+ return generic_bin_search((void *)c->ptrs,
+ sizeof(struct btrfs_key_ptr),
key, btrfs_header_nritems(&c->header),
slot);
}
@@ -311,7 +315,8 @@
}
parent = &parent_buf->node;
- if (btrfs_header_nritems(&mid->header) > NODEPTRS_PER_BLOCK / 4)
+ if (btrfs_header_nritems(&mid->header) >
+ BTRFS_NODEPTRS_PER_BLOCK(root) / 4)
return 0;
left_buf = read_node_slot(root, parent_buf, pslot - 1);
@@ -351,7 +356,8 @@
if (wret)
ret = wret;
} else {
- memcpy(parent->keys + pslot + 1, right->keys,
+ memcpy(&parent->ptrs[pslot + 1].key,
+ &right->ptrs[0].key,
sizeof(struct btrfs_disk_key));
BUG_ON(list_empty(&parent_buf->dirty));
}
@@ -387,7 +393,7 @@
ret = wret;
} else {
/* update the parent key to reflect our changes */
- memcpy(parent->keys + pslot, mid->keys,
+ memcpy(&parent->ptrs[pslot].key, &mid->ptrs[0].key,
sizeof(struct btrfs_disk_key));
BUG_ON(list_empty(&parent_buf->dirty));
}
@@ -407,7 +413,7 @@
}
}
/* double check we haven't messed things up */
- check_block(path, level);
+ check_block(root, path, level);
if (orig_ptr != btrfs_node_blockptr(&path->nodes[level]->node,
path->slots[level]))
BUG();
@@ -456,7 +462,7 @@
BUG_ON(!cow && ins_len);
c = &b->node;
p->nodes[level] = b;
- ret = check_block(p, level);
+ ret = check_block(root, p, level);
if (ret)
return -1;
ret = bin_search(c, key, &slot);
@@ -465,7 +471,7 @@
slot -= 1;
p->slots[level] = slot;
if (ins_len > 0 && btrfs_header_nritems(&c->header) ==
- NODEPTRS_PER_BLOCK) {
+ BTRFS_NODEPTRS_PER_BLOCK(root)) {
int sret = split_node(root, p, level);
BUG_ON(sret > 0);
if (sret)
@@ -488,7 +494,7 @@
} else {
struct btrfs_leaf *l = (struct btrfs_leaf *)c;
p->slots[level] = slot;
- if (ins_len > 0 && btrfs_leaf_free_space(l) <
+ if (ins_len > 0 && btrfs_leaf_free_space(root, l) <
sizeof(struct btrfs_item) + ins_len) {
int sret = split_leaf(root, p, ins_len);
BUG_ON(sret > 0);
@@ -525,7 +531,7 @@
if (!path->nodes[i])
break;
t = &path->nodes[i]->node;
- memcpy(t->keys + tslot, key, sizeof(*key));
+ memcpy(&t->ptrs[tslot].key, key, sizeof(*key));
BUG_ON(list_empty(&path->nodes[i]->dirty));
if (tslot != 0)
break;
@@ -552,7 +558,7 @@
src_nritems = btrfs_header_nritems(&src->header);
dst_nritems = btrfs_header_nritems(&dst->header);
- push_items = NODEPTRS_PER_BLOCK - dst_nritems;
+ push_items = BTRFS_NODEPTRS_PER_BLOCK(root) - dst_nritems;
if (push_items <= 0) {
return 1;
}
@@ -560,16 +566,12 @@
if (src_nritems < push_items)
push_items = src_nritems;
- memcpy(dst->keys + dst_nritems, src->keys,
- push_items * sizeof(struct btrfs_disk_key));
- memcpy(dst->blockptrs + dst_nritems, src->blockptrs,
- push_items * sizeof(u64));
+ memcpy(dst->ptrs + dst_nritems, src->ptrs,
+ push_items * sizeof(struct btrfs_key_ptr));
if (push_items < src_nritems) {
- memmove(src->keys, src->keys + push_items,
+ memmove(src->ptrs, src->ptrs + push_items,
(src_nritems - push_items) *
- sizeof(struct btrfs_disk_key));
- memmove(src->blockptrs, src->blockptrs + push_items,
- (src_nritems - push_items) * sizeof(u64));
+ sizeof(struct btrfs_key_ptr));
}
btrfs_set_header_nritems(&src->header, src_nritems - push_items);
btrfs_set_header_nritems(&dst->header, dst_nritems + push_items);
@@ -601,7 +603,7 @@
src_nritems = btrfs_header_nritems(&src->header);
dst_nritems = btrfs_header_nritems(&dst->header);
- push_items = NODEPTRS_PER_BLOCK - dst_nritems;
+ push_items = BTRFS_NODEPTRS_PER_BLOCK(root) - dst_nritems;
if (push_items <= 0) {
return 1;
}
@@ -613,14 +615,10 @@
if (max_push < push_items)
push_items = max_push;
- memmove(dst->keys + push_items, dst->keys,
- dst_nritems * sizeof(struct btrfs_disk_key));
- memmove(dst->blockptrs + push_items, dst->blockptrs,
- dst_nritems * sizeof(u64));
- memcpy(dst->keys, src->keys + src_nritems - push_items,
- push_items * sizeof(struct btrfs_disk_key));
- memcpy(dst->blockptrs, src->blockptrs + src_nritems - push_items,
- push_items * sizeof(u64));
+ memmove(dst->ptrs + push_items, dst->ptrs,
+ dst_nritems * sizeof(struct btrfs_key_ptr));
+ memcpy(dst->ptrs, src->ptrs + src_nritems - push_items,
+ push_items * sizeof(struct btrfs_key_ptr));
btrfs_set_header_nritems(&src->header, src_nritems - push_items);
btrfs_set_header_nritems(&dst->header, dst_nritems + push_items);
@@ -650,7 +648,7 @@
t = btrfs_alloc_free_block(root);
c = &t->node;
- memset(c, 0, sizeof(c));
+ memset(c, 0, root->blocksize);
btrfs_set_header_nritems(&c->header, 1);
btrfs_set_header_level(&c->header, level);
btrfs_set_header_blocknr(&c->header, t->blocknr);
@@ -660,8 +658,8 @@
if (btrfs_is_leaf(lower))
lower_key = &((struct btrfs_leaf *)lower)->items[0].key;
else
- lower_key = lower->keys;
- memcpy(c->keys, lower_key, sizeof(struct btrfs_disk_key));
+ lower_key = &lower->ptrs[0].key;
+ memcpy(&c->ptrs[0].key, lower_key, sizeof(struct btrfs_disk_key));
btrfs_set_node_blockptr(c, 0, path->nodes[level - 1]->blocknr);
/* the super has an extra ref to root->node */
btrfs_block_release(root, root->node);
@@ -693,19 +691,15 @@
nritems = btrfs_header_nritems(&lower->header);
if (slot > nritems)
BUG();
- if (nritems == NODEPTRS_PER_BLOCK)
+ if (nritems == BTRFS_NODEPTRS_PER_BLOCK(root))
BUG();
if (slot != nritems) {
- memmove(lower->keys + slot + 1, lower->keys + slot,
- (nritems - slot) * sizeof(struct btrfs_disk_key));
- memmove(lower->blockptrs + slot + 1, lower->blockptrs + slot,
- (nritems - slot) * sizeof(u64));
+ memmove(lower->ptrs + slot + 1, lower->ptrs + slot,
+ (nritems - slot) * sizeof(struct btrfs_key_ptr));
}
- memcpy(lower->keys + slot, key, sizeof(struct btrfs_disk_key));
+ memcpy(&lower->ptrs[slot].key, key, sizeof(struct btrfs_disk_key));
btrfs_set_node_blockptr(lower, slot, blocknr);
btrfs_set_header_nritems(&lower->header, nritems + 1);
- if (lower->keys[1].objectid == 0)
- BUG();
BUG_ON(list_empty(&path->nodes[level]->dirty));
return 0;
}
@@ -747,17 +741,16 @@
btrfs_set_header_parentid(&split->header,
btrfs_header_parentid(&root->node->node.header));
mid = (c_nritems + 1) / 2;
- memcpy(split->keys, c->keys + mid,
- (c_nritems - mid) * sizeof(struct btrfs_disk_key));
- memcpy(split->blockptrs, c->blockptrs + mid,
- (c_nritems - mid) * sizeof(u64));
+ memcpy(split->ptrs, c->ptrs + mid,
+ (c_nritems - mid) * sizeof(struct btrfs_key_ptr));
btrfs_set_header_nritems(&split->header, c_nritems - mid);
btrfs_set_header_nritems(&c->header, mid);
ret = 0;
BUG_ON(list_empty(&t->dirty));
- wret = insert_ptr(root, path, split->keys, split_buffer->blocknr,
- path->slots[level + 1] + 1, level + 1);
+ wret = insert_ptr(root, path, &split->ptrs[0].key,
+ split_buffer->blocknr, path->slots[level + 1] + 1,
+ level + 1);
if (wret)
ret = wret;
@@ -825,7 +818,7 @@
right_buf = read_tree_block(root, btrfs_node_blockptr(&upper->node,
slot + 1));
right = &right_buf->leaf;
- free_space = btrfs_leaf_free_space(right);
+ free_space = btrfs_leaf_free_space(root, right);
if (free_space < data_size + sizeof(struct btrfs_item)) {
btrfs_block_release(root, right_buf);
return 1;
@@ -833,7 +826,7 @@
/* cow and double check */
btrfs_cow_block(root, right_buf, upper, slot + 1, &right_buf);
right = &right_buf->leaf;
- free_space = btrfs_leaf_free_space(right);
+ free_space = btrfs_leaf_free_space(root, right);
if (free_space < data_size + sizeof(struct btrfs_item)) {
btrfs_block_release(root, right_buf);
return 1;
@@ -857,15 +850,14 @@
right_nritems = btrfs_header_nritems(&right->header);
/* push left to right */
push_space = btrfs_item_end(left->items + left_nritems - push_items);
- push_space -= leaf_data_end(left);
+ push_space -= leaf_data_end(root, left);
/* make room in the right data area */
- memmove(right->data + leaf_data_end(right) - push_space,
- right->data + leaf_data_end(right),
- LEAF_DATA_SIZE - leaf_data_end(right));
+ memmove(btrfs_leaf_data(right) + leaf_data_end(root, right) -
+ push_space, btrfs_leaf_data(right) + leaf_data_end(root, right),
+ BTRFS_LEAF_DATA_SIZE(root) - leaf_data_end(root, right));
/* copy from the left data area */
- memcpy(right->data + LEAF_DATA_SIZE - push_space,
- left->data + leaf_data_end(left),
- push_space);
+ memcpy(btrfs_leaf_data(right) + BTRFS_LEAF_DATA_SIZE(root) - push_space,
+ btrfs_leaf_data(left) + leaf_data_end(root, left), push_space);
memmove(right->items + push_items, right->items,
right_nritems * sizeof(struct btrfs_item));
/* copy the items from left to right */
@@ -875,7 +867,7 @@
/* update the item pointers */
right_nritems += push_items;
btrfs_set_header_nritems(&right->header, right_nritems);
- push_space = LEAF_DATA_SIZE;
+ push_space = BTRFS_LEAF_DATA_SIZE(root);
for (i = 0; i < right_nritems; i++) {
btrfs_set_item_offset(right->items + i, push_space -
btrfs_item_size(right->items + i));
@@ -886,7 +878,7 @@
BUG_ON(list_empty(&left_buf->dirty));
BUG_ON(list_empty(&right_buf->dirty));
- memcpy(upper->node.keys + slot + 1,
+ memcpy(&upper->node.ptrs[slot + 1].key,
&right->items[0].key, sizeof(struct btrfs_disk_key));
BUG_ON(list_empty(&upper->dirty));
@@ -932,7 +924,7 @@
t = read_tree_block(root, btrfs_node_blockptr(&path->nodes[1]->node,
slot - 1));
left = &t->leaf;
- free_space = btrfs_leaf_free_space(left);
+ free_space = btrfs_leaf_free_space(root, left);
if (free_space < data_size + sizeof(struct btrfs_item)) {
btrfs_block_release(root, t);
return 1;
@@ -941,7 +933,7 @@
/* cow and double check */
btrfs_cow_block(root, t, path->nodes[1], slot - 1, &t);
left = &t->leaf;
- free_space = btrfs_leaf_free_space(left);
+ free_space = btrfs_leaf_free_space(root, left);
if (free_space < data_size + sizeof(struct btrfs_item)) {
btrfs_block_release(root, t);
return 1;
@@ -964,17 +956,19 @@
/* push data from right to left */
memcpy(left->items + btrfs_header_nritems(&left->header),
right->items, push_items * sizeof(struct btrfs_item));
- push_space = LEAF_DATA_SIZE -
+ push_space = BTRFS_LEAF_DATA_SIZE(root) -
btrfs_item_offset(right->items + push_items -1);
- memcpy(left->data + leaf_data_end(left) - push_space,
- right->data + btrfs_item_offset(right->items + push_items - 1),
+ memcpy(btrfs_leaf_data(left) + leaf_data_end(root, left) - push_space,
+ btrfs_leaf_data(right) +
+ btrfs_item_offset(right->items + push_items - 1),
push_space);
old_left_nritems = btrfs_header_nritems(&left->header);
BUG_ON(old_left_nritems < 0);
for (i = old_left_nritems; i < old_left_nritems + push_items; i++) {
- u16 ioff = btrfs_item_offset(left->items + i);
- btrfs_set_item_offset(left->items + i, ioff - (LEAF_DATA_SIZE -
+ u32 ioff = btrfs_item_offset(left->items + i);
+ btrfs_set_item_offset(left->items + i, ioff -
+ (BTRFS_LEAF_DATA_SIZE(root) -
btrfs_item_offset(left->items +
old_left_nritems - 1)));
}
@@ -982,16 +976,17 @@
/* fixup right node */
push_space = btrfs_item_offset(right->items + push_items - 1) -
- leaf_data_end(right);
- memmove(right->data + LEAF_DATA_SIZE - push_space, right->data +
- leaf_data_end(right), push_space);
+ leaf_data_end(root, right);
+ memmove(btrfs_leaf_data(right) + BTRFS_LEAF_DATA_SIZE(root) -
+ push_space, btrfs_leaf_data(right) +
+ leaf_data_end(root, right), push_space);
memmove(right->items, right->items + push_items,
(btrfs_header_nritems(&right->header) - push_items) *
sizeof(struct btrfs_item));
btrfs_set_header_nritems(&right->header,
btrfs_header_nritems(&right->header) -
push_items);
- push_space = LEAF_DATA_SIZE;
+ push_space = BTRFS_LEAF_DATA_SIZE(root);
for (i = 0; i < btrfs_header_nritems(&right->header); i++) {
btrfs_set_item_offset(right->items + i, push_space -
@@ -1051,12 +1046,12 @@
if (wret < 0)
return wret;
}
-
l_buf = path->nodes[0];
l = &l_buf->leaf;
/* did the pushes work? */
- if (btrfs_leaf_free_space(l) >= sizeof(struct btrfs_item) + data_size)
+ if (btrfs_leaf_free_space(root, l) >=
+ sizeof(struct btrfs_item) + data_size)
return 0;
if (!path->nodes[1]) {
@@ -1071,16 +1066,16 @@
BUG_ON(!right_buffer);
BUG_ON(mid == nritems);
right = &right_buffer->leaf;
- memset(right, 0, sizeof(*right));
+ memset(&right->header, 0, sizeof(right->header));
if (mid <= slot) {
/* FIXME, just alloc a new leaf here */
if (leaf_space_used(l, mid, nritems - mid) + space_needed >
- LEAF_DATA_SIZE)
+ BTRFS_LEAF_DATA_SIZE(root))
BUG();
} else {
/* FIXME, just alloc a new leaf here */
if (leaf_space_used(l, 0, mid + 1) + space_needed >
- LEAF_DATA_SIZE)
+ BTRFS_LEAF_DATA_SIZE(root))
BUG();
}
btrfs_set_header_nritems(&right->header, nritems - mid);
@@ -1088,15 +1083,18 @@
btrfs_set_header_level(&right->header, 0);
btrfs_set_header_parentid(&right->header,
btrfs_header_parentid(&root->node->node.header));
- data_copy_size = btrfs_item_end(l->items + mid) - leaf_data_end(l);
+ data_copy_size = btrfs_item_end(l->items + mid) -
+ leaf_data_end(root, l);
memcpy(right->items, l->items + mid,
(nritems - mid) * sizeof(struct btrfs_item));
- memcpy(right->data + LEAF_DATA_SIZE - data_copy_size,
- l->data + leaf_data_end(l), data_copy_size);
- rt_data_off = LEAF_DATA_SIZE - btrfs_item_end(l->items + mid);
+ memcpy(btrfs_leaf_data(right) + BTRFS_LEAF_DATA_SIZE(root) -
+ data_copy_size, btrfs_leaf_data(l) +
+ leaf_data_end(root, l), data_copy_size);
+ rt_data_off = BTRFS_LEAF_DATA_SIZE(root) -
+ btrfs_item_end(l->items + mid);
for (i = 0; i < btrfs_header_nritems(&right->header); i++) {
- u16 ioff = btrfs_item_offset(right->items + i);
+ u32 ioff = btrfs_item_offset(right->items + i);
btrfs_set_item_offset(right->items + i, ioff + rt_data_off);
}
@@ -1156,9 +1154,9 @@
leaf = &leaf_buf->leaf;
nritems = btrfs_header_nritems(&leaf->header);
- data_end = leaf_data_end(leaf);
+ data_end = leaf_data_end(root, leaf);
- if (btrfs_leaf_free_space(leaf) <
+ if (btrfs_leaf_free_space(root, leaf) <
sizeof(struct btrfs_item) + data_size)
BUG();
@@ -1173,7 +1171,7 @@
*/
/* first correct the data pointers */
for (i = slot; i < nritems; i++) {
- u16 ioff = btrfs_item_offset(leaf->items + i);
+ u32 ioff = btrfs_item_offset(leaf->items + i);
btrfs_set_item_offset(leaf->items + i,
ioff - data_size);
}
@@ -1183,7 +1181,8 @@
(nritems - slot) * sizeof(struct btrfs_item));
/* shift the data */
- memmove(leaf->data + data_end - data_size, leaf->data +
+ memmove(btrfs_leaf_data(leaf) + data_end - data_size,
+ btrfs_leaf_data(leaf) +
data_end, old_data - data_end);
data_end = old_data;
}
@@ -1192,7 +1191,7 @@
sizeof(struct btrfs_disk_key));
btrfs_set_item_offset(leaf->items + slot, data_end - data_size);
btrfs_set_item_size(leaf->items + slot, data_size);
- memcpy(leaf->data + data_end - data_size, data, data_size);
+ memcpy(btrfs_leaf_data(leaf) + data_end - data_size, data, data_size);
btrfs_set_header_nritems(&leaf->header, nritems + 1);
ret = 0;
@@ -1200,9 +1199,9 @@
ret = fixup_low_keys(root, &path, &disk_key, 1);
BUG_ON(list_empty(&leaf_buf->dirty));
- if (btrfs_leaf_free_space(leaf) < 0)
+ if (btrfs_leaf_free_space(root, leaf) < 0)
BUG();
- check_leaf(&path, 0);
+ check_leaf(root, &path, 0);
out:
btrfs_release_path(root, &path);
return ret;
@@ -1227,11 +1226,8 @@
node = &parent->node;
nritems = btrfs_header_nritems(&node->header);
if (slot != nritems -1) {
- memmove(node->keys + slot, node->keys + slot + 1,
- sizeof(struct btrfs_disk_key) * (nritems - slot - 1));
- memmove(node->blockptrs + slot,
- node->blockptrs + slot + 1,
- sizeof(u64) * (nritems - slot - 1));
+ memmove(node->ptrs + slot, node->ptrs + slot + 1,
+ sizeof(struct btrfs_key_ptr) * (nritems - slot - 1));
}
nritems--;
btrfs_set_header_nritems(&node->header, nritems);
@@ -1240,7 +1236,8 @@
/* just turn the root into a leaf and break */
btrfs_set_header_level(&root->node->node.header, 0);
} else if (slot == 0) {
- wret = fixup_low_keys(root, path, node->keys, level + 1);
+ wret = fixup_low_keys(root, path, &node->ptrs[0].key,
+ level + 1);
if (wret)
ret = wret;
}
@@ -1272,12 +1269,12 @@
if (slot != nritems - 1) {
int i;
- int data_end = leaf_data_end(leaf);
- memmove(leaf->data + data_end + dsize,
- leaf->data + data_end,
+ int data_end = leaf_data_end(root, leaf);
+ memmove(btrfs_leaf_data(leaf) + data_end + dsize,
+ btrfs_leaf_data(leaf) + data_end,
doff - data_end);
for (i = slot + 1; i < nritems; i++) {
- u16 ioff = btrfs_item_offset(leaf->items + i);
+ u32 ioff = btrfs_item_offset(leaf->items + i);
btrfs_set_item_offset(leaf->items + i, ioff + dsize);
}
memmove(leaf->items + slot, leaf->items + slot + 1,
@@ -1311,7 +1308,7 @@
BUG_ON(list_empty(&leaf_buf->dirty));
/* delete the leaf if it is mostly empty */
- if (used < LEAF_DATA_SIZE / 3) {
+ if (used < BTRFS_LEAF_DATA_SIZE(root) / 3) {
/* push_leaf_left fixes the path.
* make sure the path still points to our leaf
* for possible call to del_ptr below