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Btrfs: get/set for struct header fields

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-12 12:01:18 -04:00
committed by David Woodhouse
parent 83e15a28e0
commit 7518a238ea
10 changed files with 230 additions and 172 deletions
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53
fs/btrfs/extent-tree.c
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@@ -79,10 +79,10 @@ int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf)
if (root == root->extent_root)
return 0;
if (is_leaf(buf->node.header.flags))
if (btrfs_is_leaf(&buf->node))
return 0;
for (i = 0; i < buf->node.header.nritems; i++) {
for (i = 0; i < btrfs_header_nritems(&buf->node.header); i++) {
blocknr = buf->node.blockptrs[i];
inc_block_ref(root, blocknr);
}
@@ -119,7 +119,8 @@ static int finish_current_insert(struct ctree_root *extent_root)
int ret;
extent_item.refs = 1;
extent_item.owner = extent_root->node->node.header.parentid;
extent_item.owner =
btrfs_header_parentid(&extent_root->node->node.header);
ins.offset = 1;
ins.flags = 0;
@@ -269,7 +270,7 @@ static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
struct ctree_root * root = orig_root->extent_root;
int total_needed = num_blocks;
total_needed += (node_level(root->node->node.header.flags) + 1) * 3;
total_needed += (btrfs_header_level(&root->node->node.header) + 1) * 3;
if (root->last_insert.objectid > search_start)
search_start = root->last_insert.objectid;
check_failed:
@@ -288,7 +289,7 @@ check_failed:
while (1) {
l = &path.nodes[0]->leaf;
slot = path.slots[0];
if (slot >= l->header.nritems) {
if (slot >= btrfs_header_nritems(&l->header)) {
ret = next_leaf(root, &path);
if (ret == 0)
continue;
@@ -404,7 +405,7 @@ struct tree_buffer *alloc_free_block(struct ctree_root *root)
struct tree_buffer *buf;
ret = alloc_extent(root, 1, 0, (unsigned long)-1,
root->node->node.header.parentid,
btrfs_header_parentid(&root->node->node.header),
&ins);
if (ret) {
BUG();
@@ -429,7 +430,8 @@ int walk_down_tree(struct ctree_root *root, struct ctree_path *path, int *level)
goto out;
while(*level > 0) {
cur = path->nodes[*level];
if (path->slots[*level] >= cur->node.header.nritems)
if (path->slots[*level] >=
btrfs_header_nritems(&cur->node.header))
break;
blocknr = cur->node.blockptrs[path->slots[*level]];
ret = lookup_block_ref(root, blocknr, &refs);
@@ -444,7 +446,7 @@ int walk_down_tree(struct ctree_root *root, struct ctree_path *path, int *level)
if (path->nodes[*level-1])
tree_block_release(root, path->nodes[*level-1]);
path->nodes[*level-1] = next;
*level = node_level(next->node.header.flags);
*level = btrfs_header_level(&next->node.header);
path->slots[*level] = 0;
}
out:
@@ -463,7 +465,8 @@ int walk_up_tree(struct ctree_root *root, struct ctree_path *path, int *level)
int ret;
for(i = *level; i < MAX_LEVEL - 1 && path->nodes[i]; i++) {
slot = path->slots[i];
if (slot < path->nodes[i]->node.header.nritems - 1) {
if (slot <
btrfs_header_nritems(&path->nodes[i]->node.header)- 1) {
path->slots[i]++;
*level = i;
return 0;
@@ -489,7 +492,7 @@ int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap)
init_path(&path);
level = node_level(snap->node.header.flags);
level = btrfs_header_level(&snap->node.header);
orig_level = level;
path.nodes[level] = snap;
path.slots[level] = 0;
@@ -509,33 +512,3 @@ int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap)
return 0;
}
#if 0
int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap)
{
int ret;
int level;
int refs;
u64 blocknr = snap->blocknr;
level = node_level(snap->node.header.flags);
ret = lookup_block_ref(root, snap->blocknr, &refs);
BUG_ON(ret);
if (refs == 1 && level != 0) {
struct node *n = &snap->node;
struct tree_buffer *b;
int i;
for (i = 0; i < n->header.nritems; i++) {
b = read_tree_block(root, n->blockptrs[i]);
/* FIXME, don't recurse here */
ret = btrfs_drop_snapshot(root, b);
BUG_ON(ret);
tree_block_release(root, b);
}
}
ret = free_extent(root, blocknr, 1);
BUG_ON(ret);
return 0;
}
#endif