forked from Mirrors/btrfs-progs
node->blockptrs endian fixes
Chris Mason
David Woodhouse
parent
f6a88938c6
commit
3192451f58
31
ctree.c
31
ctree.c
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@ -58,7 +58,8 @@ int btrfs_cow_block(struct ctree_root *root,
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free_extent(root, buf->blocknr, 1);
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tree_block_release(root, buf);
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} else {
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parent->node.blockptrs[parent_slot] = cow->blocknr;
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btrfs_set_node_blockptr(&parent->node, parent_slot,
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cow->blocknr);
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BUG_ON(list_empty(&parent->dirty));
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free_extent(root, buf->blocknr, 1);
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}
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@ -133,7 +134,7 @@ int check_node(struct ctree_path *path, int level)
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parent_key = &parent->keys[parent_slot];
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BUG_ON(memcmp(parent_key, node->keys,
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sizeof(struct btrfs_disk_key)));
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BUG_ON(parent->blockptrs[parent_slot] !=
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BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
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btrfs_header_blocknr(&node->header));
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}
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BUG_ON(nritems > NODEPTRS_PER_BLOCK);
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@ -166,7 +167,7 @@ int check_leaf(struct ctree_path *path, int level)
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parent_key = &parent->keys[parent_slot];
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BUG_ON(memcmp(parent_key, &leaf->items[0].key,
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sizeof(struct btrfs_disk_key)));
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BUG_ON(parent->blockptrs[parent_slot] !=
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BUG_ON(btrfs_node_blockptr(parent, parent_slot) !=
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btrfs_header_blocknr(&leaf->header));
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}
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for (i = 0; nritems > 1 && i < nritems - 2; i++) {
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@ -258,7 +259,7 @@ struct tree_buffer *read_node_slot(struct ctree_root *root,
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return NULL;
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if (slot >= btrfs_header_nritems(&node->header))
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return NULL;
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return read_tree_block(root, node->blockptrs[slot]);
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return read_tree_block(root, btrfs_node_blockptr(node, slot));
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}
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static int balance_level(struct ctree_root *root, struct ctree_path *path,
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@ -283,7 +284,7 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
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mid_buf = path->nodes[level];
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mid = &mid_buf->node;
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orig_ptr = mid->blockptrs[orig_slot];
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orig_ptr = btrfs_node_blockptr(mid, orig_slot);
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if (level < MAX_LEVEL - 1)
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parent_buf = path->nodes[level + 1];
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@ -407,7 +408,8 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
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}
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/* double check we haven't messed things up */
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check_block(path, level);
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if (orig_ptr != path->nodes[level]->node.blockptrs[path->slots[level]])
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if (orig_ptr != btrfs_node_blockptr(&path->nodes[level]->node,
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path->slots[level]))
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BUG();
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if (right_buf)
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@ -482,7 +484,7 @@ again:
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slot = p->slots[level];
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BUG_ON(btrfs_header_nritems(&c->header) == 1);
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}
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b = read_tree_block(root, c->blockptrs[slot]);
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b = read_tree_block(root, btrfs_node_blockptr(c, slot));
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} else {
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struct leaf *l = (struct leaf *)c;
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p->slots[level] = slot;
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@ -660,7 +662,7 @@ static int insert_new_root(struct ctree_root *root,
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else
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lower_key = lower->keys;
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memcpy(c->keys, lower_key, sizeof(struct btrfs_disk_key));
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c->blockptrs[0] = path->nodes[level-1]->blocknr;
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btrfs_set_node_blockptr(c, 0, path->nodes[level - 1]->blocknr);
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/* the super has an extra ref to root->node */
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tree_block_release(root, root->node);
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root->node = t;
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@ -700,7 +702,7 @@ static int insert_ptr(struct ctree_root *root,
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(nritems - slot) * sizeof(u64));
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}
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memcpy(lower->keys + slot, key, sizeof(struct btrfs_disk_key));
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lower->blockptrs[slot] = blocknr;
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btrfs_set_node_blockptr(lower, slot, blocknr);
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btrfs_set_header_nritems(&lower->header, nritems + 1);
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if (lower->keys[1].objectid == 0)
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BUG();
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@ -820,7 +822,8 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
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if (slot >= btrfs_header_nritems(&upper->node.header) - 1) {
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return 1;
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}
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right_buf = read_tree_block(root, upper->node.blockptrs[slot + 1]);
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right_buf = read_tree_block(root, btrfs_node_blockptr(&upper->node,
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slot + 1));
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right = &right_buf->leaf;
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free_space = leaf_free_space(right);
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if (free_space < data_size + sizeof(struct btrfs_item)) {
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@ -926,7 +929,8 @@ static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
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if (!path->nodes[1]) {
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return 1;
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}
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t = read_tree_block(root, path->nodes[1]->node.blockptrs[slot - 1]);
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t = read_tree_block(root, btrfs_node_blockptr(&path->nodes[1]->node,
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slot - 1));
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left = &t->leaf;
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free_space = leaf_free_space(left);
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if (free_space < data_size + sizeof(struct btrfs_item)) {
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@ -1353,7 +1357,7 @@ int next_leaf(struct ctree_root *root, struct ctree_path *path)
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level++;
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continue;
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}
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blocknr = c->node.blockptrs[slot];
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blocknr = btrfs_node_blockptr(&c->node, slot);
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if (next)
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tree_block_release(root, next);
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next = read_tree_block(root, blocknr);
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@ -1368,7 +1372,8 @@ int next_leaf(struct ctree_root *root, struct ctree_path *path)
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path->slots[level] = 0;
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if (!level)
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break;
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next = read_tree_block(root, next->node.blockptrs[0]);
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next = read_tree_block(root,
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btrfs_node_blockptr(&next->node, 0));
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}
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return 0;
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}
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12
ctree.h
12
ctree.h
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@ -128,7 +128,7 @@ struct leaf {
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struct node {
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struct btrfs_header header;
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struct btrfs_disk_key keys[NODEPTRS_PER_BLOCK];
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u64 blockptrs[NODEPTRS_PER_BLOCK];
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__le64 blockptrs[NODEPTRS_PER_BLOCK];
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} __attribute__ ((__packed__));
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/*
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@ -153,6 +153,16 @@ struct ctree_path {
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int slots[MAX_LEVEL];
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};
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static inline u64 btrfs_node_blockptr(struct node *n, int nr)
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{
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return le64_to_cpu(n->blockptrs[nr]);
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}
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static inline void btrfs_set_node_blockptr(struct node *n, int nr, u64 val)
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{
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n->blockptrs[nr] = cpu_to_le64(val);
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}
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static inline u16 btrfs_item_offset(struct btrfs_item *item)
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{
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return le16_to_cpu(item->offset);
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@ -85,7 +85,7 @@ int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf)
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return 0;
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for (i = 0; i < btrfs_header_nritems(&buf->node.header); i++) {
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blocknr = buf->node.blockptrs[i];
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blocknr = btrfs_node_blockptr(&buf->node, i);
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inc_block_ref(root, blocknr);
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}
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return 0;
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@ -437,7 +437,7 @@ int walk_down_tree(struct ctree_root *root, struct ctree_path *path, int *level)
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if (path->slots[*level] >=
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btrfs_header_nritems(&cur->node.header))
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break;
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blocknr = cur->node.blockptrs[path->slots[*level]];
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blocknr = btrfs_node_blockptr(&cur->node, path->slots[*level]);
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ret = lookup_block_ref(root, blocknr, &refs);
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if (refs != 1 || *level == 1) {
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path->slots[*level]++;
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@ -54,12 +54,12 @@ void print_tree(struct ctree_root *root, struct tree_buffer *t)
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printf("\tkey %d (%Lu %u %Lu) block %Lu\n",
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i,
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c->keys[i].objectid, c->keys[i].flags, c->keys[i].offset,
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c->blockptrs[i]);
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btrfs_node_blockptr(c, i));
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fflush(stdout);
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}
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for (i = 0; i < nr; i++) {
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struct tree_buffer *next_buf = read_tree_block(root,
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c->blockptrs[i]);
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btrfs_node_blockptr(c, i));
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struct node *next = &next_buf->node;
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if (btrfs_is_leaf(next) &&
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btrfs_header_level(&c->header) != 1)
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