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Btrfs: Better block record keeping, real mkfs

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-20 20:35:03 -04:00
committed by David Woodhouse
parent 293ffd5fd3
commit 1261ec42b3
7 changed files with 134 additions and 19 deletions
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24
fs/btrfs/extent-tree.c
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@@ -134,6 +134,8 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
struct btrfs_extent_item extent_item;
int i;
int ret;
u64 super_blocks_used;
struct btrfs_fs_info *info = extent_root->fs_info;
btrfs_set_extent_refs(&extent_item, 1);
btrfs_set_extent_owner(&extent_item,
@@ -145,6 +147,9 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
for (i = 0; i < extent_root->fs_info->current_insert.flags; i++) {
ins.objectid = extent_root->fs_info->current_insert.objectid +
i;
super_blocks_used = btrfs_super_blocks_used(info->disk_super);
btrfs_set_super_blocks_used(info->disk_super,
super_blocks_used + 1);
ret = btrfs_insert_item(trans, extent_root, &ins, &extent_item,
sizeof(extent_item));
BUG_ON(ret);
@@ -161,7 +166,8 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
{
struct btrfs_path path;
struct btrfs_key key;
struct btrfs_root *extent_root = root->fs_info->extent_root;
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_root *extent_root = info->extent_root;
int ret;
struct btrfs_extent_item *ei;
struct btrfs_key ins;
@@ -188,15 +194,18 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
refs = btrfs_extent_refs(ei) - 1;
btrfs_set_extent_refs(ei, refs);
if (refs == 0) {
u64 super_blocks_used;
if (pin) {
int err;
radix_tree_preload(GFP_KERNEL);
err = radix_tree_insert(
&extent_root->fs_info->pinned_radix,
blocknr, (void *)blocknr);
err = radix_tree_insert(&info->pinned_radix,
blocknr, (void *)blocknr);
BUG_ON(err);
radix_tree_preload_end();
}
super_blocks_used = btrfs_super_blocks_used(info->disk_super);
btrfs_set_super_blocks_used(info->disk_super,
super_blocks_used - num_blocks);
ret = btrfs_del_item(trans, extent_root, &path);
if (!pin && extent_root->fs_info->last_insert.objectid >
blocknr)
@@ -392,7 +401,9 @@ static int alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root
{
int ret;
int pending_ret;
struct btrfs_root *extent_root = root->fs_info->extent_root;
u64 super_blocks_used;
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_root *extent_root = info->extent_root;
struct btrfs_extent_item extent_item;
btrfs_set_extent_refs(&extent_item, 1);
@@ -413,6 +424,9 @@ static int alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root
if (ret)
return ret;
super_blocks_used = btrfs_super_blocks_used(info->disk_super);
btrfs_set_super_blocks_used(info->disk_super, super_blocks_used +
num_blocks);
ret = btrfs_insert_item(trans, extent_root, ins, &extent_item,
sizeof(extent_item));