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rename funcs and structs to btrfs

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-13 10:46:10 -04:00
committed by David Woodhouse
parent cf27e1eec0
commit 234b63a091
11 changed files with 454 additions and 447 deletions
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106
fs/btrfs/disk-io.c
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@@ -13,7 +13,7 @@
static int allocated_blocks = 0;
int cache_max = 10000;
static int check_tree_block(struct ctree_root *root, struct tree_buffer *buf)
static int check_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
{
if (buf->blocknr != btrfs_header_blocknr(&buf->node.header))
BUG();
@@ -23,18 +23,18 @@ static int check_tree_block(struct ctree_root *root, struct tree_buffer *buf)
return 0;
}
static int free_some_buffers(struct ctree_root *root)
static int free_some_buffers(struct btrfs_root *root)
{
struct list_head *node, *next;
struct tree_buffer *b;
struct btrfs_buffer *b;
if (root->cache_size < cache_max)
return 0;
list_for_each_safe(node, next, &root->cache) {
b = list_entry(node, struct tree_buffer, cache);
b = list_entry(node, struct btrfs_buffer, cache);
if (b->count == 1) {
BUG_ON(!list_empty(&b->dirty));
list_del_init(&b->cache);
tree_block_release(root, b);
btrfs_block_release(root, b);
if (root->cache_size < cache_max)
break;
}
@@ -42,11 +42,11 @@ static int free_some_buffers(struct ctree_root *root)
return 0;
}
struct tree_buffer *alloc_tree_block(struct ctree_root *root, u64 blocknr)
struct btrfs_buffer *alloc_tree_block(struct btrfs_root *root, u64 blocknr)
{
struct tree_buffer *buf;
struct btrfs_buffer *buf;
int ret;
buf = malloc(sizeof(struct tree_buffer));
buf = malloc(sizeof(struct btrfs_buffer));
if (!buf)
return buf;
allocated_blocks++;
@@ -66,9 +66,9 @@ struct tree_buffer *alloc_tree_block(struct ctree_root *root, u64 blocknr)
return buf;
}
struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr)
struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr)
{
struct tree_buffer *buf;
struct btrfs_buffer *buf;
buf = radix_tree_lookup(&root->cache_radix, blocknr);
if (buf) {
buf->count++;
@@ -82,10 +82,10 @@ struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr)
return buf;
}
struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr)
{
loff_t offset = blocknr * CTREE_BLOCKSIZE;
struct tree_buffer *buf;
loff_t offset = blocknr * BTRFS_BLOCKSIZE;
struct btrfs_buffer *buf;
int ret;
buf = radix_tree_lookup(&root->cache_radix, blocknr);
@@ -95,8 +95,8 @@ struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
buf = alloc_tree_block(root, blocknr);
if (!buf)
return NULL;
ret = pread(root->fp, &buf->node, CTREE_BLOCKSIZE, offset);
if (ret != CTREE_BLOCKSIZE) {
ret = pread(root->fp, &buf->node, BTRFS_BLOCKSIZE, offset);
if (ret != BTRFS_BLOCKSIZE) {
free(buf);
return NULL;
}
@@ -106,7 +106,7 @@ struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
return buf;
}
int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf)
int dirty_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
{
if (!list_empty(&buf->dirty))
return 0;
@@ -115,46 +115,47 @@ int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf)
return 0;
}
int clean_tree_block(struct ctree_root *root, struct tree_buffer *buf)
int clean_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
{
if (!list_empty(&buf->dirty)) {
list_del_init(&buf->dirty);
tree_block_release(root, buf);
btrfs_block_release(root, buf);
}
return 0;
}
int write_tree_block(struct ctree_root *root, struct tree_buffer *buf)
int write_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
{
u64 blocknr = buf->blocknr;
loff_t offset = blocknr * CTREE_BLOCKSIZE;
loff_t offset = blocknr * BTRFS_BLOCKSIZE;
int ret;
if (buf->blocknr != btrfs_header_blocknr(&buf->node.header))
BUG();
ret = pwrite(root->fp, &buf->node, CTREE_BLOCKSIZE, offset);
if (ret != CTREE_BLOCKSIZE)
ret = pwrite(root->fp, &buf->node, BTRFS_BLOCKSIZE, offset);
if (ret != BTRFS_BLOCKSIZE)
return ret;
return 0;
}
static int __commit_transaction(struct ctree_root *root)
static int __commit_transaction(struct btrfs_root *root)
{
struct tree_buffer *b;
struct btrfs_buffer *b;
int ret = 0;
int wret;
while(!list_empty(&root->trans)) {
b = list_entry(root->trans.next, struct tree_buffer, dirty);
b = list_entry(root->trans.next, struct btrfs_buffer, dirty);
list_del_init(&b->dirty);
wret = write_tree_block(root, b);
if (wret)
ret = wret;
tree_block_release(root, b);
btrfs_block_release(root, b);
}
return ret;
}
int commit_transaction(struct ctree_root *root, struct ctree_super_block *s)
int btrfs_commit_transaction(struct btrfs_root *root,
struct btrfs_super_block *s)
{
int ret = 0;
@@ -163,20 +164,20 @@ int commit_transaction(struct ctree_root *root, struct ctree_super_block *s)
ret = __commit_transaction(root->extent_root);
BUG_ON(ret);
if (root->commit_root != root->node) {
struct tree_buffer *snap = root->commit_root;
struct btrfs_buffer *snap = root->commit_root;
root->commit_root = root->node;
root->node->count++;
ret = btrfs_drop_snapshot(root, snap);
BUG_ON(ret);
// tree_block_release(root, snap);
// btrfs_block_release(root, snap);
}
write_ctree_super(root, s);
btrfs_finish_extent_commit(root);
return ret;
}
static int __setup_root(struct ctree_root *root, struct ctree_root *extent_root,
struct ctree_root_info *info, int fp)
static int __setup_root(struct btrfs_root *root, struct btrfs_root *extent_root,
struct btrfs_root_info *info, int fp)
{
INIT_LIST_HEAD(&root->trans);
INIT_LIST_HEAD(&root->cache);
@@ -191,10 +192,10 @@ static int __setup_root(struct ctree_root *root, struct ctree_root *extent_root,
return 0;
}
struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *super)
{
struct ctree_root *root = malloc(sizeof(struct ctree_root));
struct ctree_root *extent_root = malloc(sizeof(struct ctree_root));
struct btrfs_root *root = malloc(sizeof(struct btrfs_root));
struct btrfs_root *extent_root = malloc(sizeof(struct btrfs_root));
int fp;
int ret;
@@ -207,16 +208,16 @@ struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
INIT_RADIX_TREE(&root->pinned_radix, GFP_KERNEL);
INIT_RADIX_TREE(&extent_root->pinned_radix, GFP_KERNEL);
INIT_RADIX_TREE(&extent_root->cache_radix, GFP_KERNEL);
ret = pread(fp, super, sizeof(struct ctree_super_block),
CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
ret = pread(fp, super, sizeof(struct btrfs_super_block),
BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
if (ret == 0 || super->root_info.tree_root == 0) {
printf("making new FS!\n");
ret = mkfs(fp);
if (ret)
return NULL;
ret = pread(fp, super, sizeof(struct ctree_super_block),
CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
if (ret != sizeof(struct ctree_super_block))
ret = pread(fp, super, sizeof(struct btrfs_super_block),
BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
if (ret != sizeof(struct btrfs_super_block))
return NULL;
}
BUG_ON(ret < 0);
@@ -227,18 +228,19 @@ struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
return root;
}
static int __update_root(struct ctree_root *root, struct ctree_root_info *info)
static int __update_root(struct btrfs_root *root, struct btrfs_root_info *info)
{
info->tree_root = root->node->blocknr;
return 0;
}
int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s)
int write_ctree_super(struct btrfs_root *root, struct btrfs_super_block *s)
{
int ret;
__update_root(root, &s->root_info);
__update_root(root->extent_root, &s->extent_info);
ret = pwrite(root->fp, s, sizeof(*s), CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
ret = pwrite(root->fp, s, sizeof(*s),
BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
if (ret != sizeof(*s)) {
fprintf(stderr, "failed to write new super block err %d\n", ret);
return ret;
@@ -246,19 +248,19 @@ int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s)
return 0;
}
static int drop_cache(struct ctree_root *root)
static int drop_cache(struct btrfs_root *root)
{
while(!list_empty(&root->cache)) {
struct tree_buffer *b = list_entry(root->cache.next,
struct tree_buffer, cache);
struct btrfs_buffer *b = list_entry(root->cache.next,
struct btrfs_buffer, cache);
list_del_init(&b->cache);
tree_block_release(root, b);
btrfs_block_release(root, b);
}
return 0;
}
int close_ctree(struct ctree_root *root, struct ctree_super_block *s)
int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s)
{
commit_transaction(root, s);
btrfs_commit_transaction(root, s);
__commit_transaction(root->extent_root);
write_ctree_super(root, s);
drop_cache(root->extent_root);
@@ -268,16 +270,16 @@ int close_ctree(struct ctree_root *root, struct ctree_super_block *s)
close(root->fp);
if (root->node)
tree_block_release(root, root->node);
btrfs_block_release(root, root->node);
if (root->extent_root->node)
tree_block_release(root->extent_root, root->extent_root->node);
tree_block_release(root, root->commit_root);
btrfs_block_release(root->extent_root, root->extent_root->node);
btrfs_block_release(root, root->commit_root);
free(root);
printf("on close %d blocks are allocated\n", allocated_blocks);
return 0;
}
void tree_block_release(struct ctree_root *root, struct tree_buffer *buf)
void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf)
{
buf->count--;
if (buf->count < 0)