Btrfs: allocator improvements, inode block groups
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1890e86..7ecbe7c 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -52,6 +52,8 @@
struct btrfs_inode_item *inode_item;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key location;
+ struct btrfs_block_group_cache *alloc_group;
+ u64 alloc_group_block;
int ret;
path = btrfs_alloc_path();
@@ -82,6 +84,12 @@
inode->i_ctime.tv_nsec = btrfs_timespec_nsec(&inode_item->ctime);
inode->i_blocks = btrfs_inode_nblocks(inode_item);
inode->i_generation = btrfs_inode_generation(inode_item);
+ alloc_group_block = btrfs_inode_block_group(inode_item);
+ ret = radix_tree_gang_lookup(&root->fs_info->block_group_radix,
+ (void **)&alloc_group,
+ alloc_group_block, 1);
+ BUG_ON(!ret);
+ BTRFS_I(inode)->block_group = alloc_group;
btrfs_free_path(path);
inode_item = NULL;
@@ -136,6 +144,8 @@
btrfs_set_timespec_nsec(&item->ctime, inode->i_ctime.tv_nsec);
btrfs_set_inode_nblocks(item, inode->i_blocks);
btrfs_set_inode_generation(item, inode->i_generation);
+ btrfs_set_inode_block_group(item,
+ BTRFS_I(inode)->block_group->key.objectid);
}
@@ -237,6 +247,7 @@
root = BTRFS_I(dir)->root;
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, dir);
ret = btrfs_unlink_trans(trans, root, dir, dentry);
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
@@ -262,6 +273,7 @@
btrfs_init_path(path);
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, dir);
key.objectid = inode->i_ino;
key.offset = (u64)-1;
key.flags = (u32)-1;
@@ -429,6 +441,7 @@
inode->i_size = 0;
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, inode);
if (S_ISREG(inode->i_mode)) {
ret = btrfs_truncate_in_trans(trans, root, inode);
BUG_ON(ret);
@@ -731,6 +744,7 @@
if (wait) {
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, inode);
ret = btrfs_commit_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
}
@@ -744,6 +758,7 @@
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, inode);
btrfs_update_inode(trans, root, inode);
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
@@ -751,7 +766,9 @@
static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 objectid, int mode)
+ u64 objectid,
+ struct btrfs_block_group_cache *group,
+ int mode)
{
struct inode *inode;
struct btrfs_inode_item inode_item;
@@ -763,6 +780,8 @@
return ERR_PTR(-ENOMEM);
BTRFS_I(inode)->root = root;
+ group = btrfs_find_block_group(root, group, 0);
+ BTRFS_I(inode)->block_group = group;
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
@@ -832,6 +851,7 @@
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, dir);
err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
if (err) {
@@ -839,11 +859,13 @@
goto out_unlock;
}
- inode = btrfs_new_inode(trans, root, objectid, mode);
+ inode = btrfs_new_inode(trans, root, objectid,
+ BTRFS_I(dir)->block_group, mode);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_unlock;
- // FIXME mark the inode dirty
+
+ btrfs_set_trans_block_group(trans, inode);
err = btrfs_add_nondir(trans, dentry, inode);
if (err)
drop_inode = 1;
@@ -853,6 +875,8 @@
inode->i_op = &btrfs_file_inode_operations;
}
dir->i_sb->s_dirt = 1;
+ btrfs_update_inode_block_group(trans, inode);
+ btrfs_update_inode_block_group(trans, dir);
out_unlock:
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
@@ -904,6 +928,7 @@
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, dir);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
goto out_unlock;
@@ -915,7 +940,8 @@
goto out_unlock;
}
- inode = btrfs_new_inode(trans, root, objectid, S_IFDIR | mode);
+ inode = btrfs_new_inode(trans, root, objectid,
+ BTRFS_I(dir)->block_group, S_IFDIR | mode);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
goto out_fail;
@@ -923,6 +949,7 @@
drop_on_err = 1;
inode->i_op = &btrfs_dir_inode_operations;
inode->i_fop = &btrfs_dir_file_operations;
+ btrfs_set_trans_block_group(trans, inode);
err = btrfs_make_empty_dir(trans, root, inode->i_ino, dir->i_ino);
if (err)
@@ -938,6 +965,8 @@
d_instantiate(dentry, inode);
drop_on_err = 0;
dir->i_sb->s_dirt = 1;
+ btrfs_update_inode_block_group(trans, inode);
+ btrfs_update_inode_block_group(trans, dir);
out_fail:
btrfs_end_transaction(trans, root);
@@ -1349,6 +1378,7 @@
/* FIXME, add redo link to tree so we don't leak on crash */
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, inode);
ret = btrfs_truncate_in_trans(trans, root, inode);
BUG_ON(ret);
ret = btrfs_end_transaction(trans, root);
@@ -1445,6 +1475,7 @@
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
+ btrfs_set_trans_block_group(trans, inode);
bh = page_buffers(pages[i]);
if (buffer_mapped(bh) && bh->b_blocknr == 0) {
@@ -1481,6 +1512,7 @@
kunmap(pages[i]);
}
SetPageChecked(pages[i]);
+ btrfs_update_inode_block_group(trans, inode);
ret = btrfs_end_transaction(trans, root);
BUG_ON(ret);
mutex_unlock(&root->fs_info->fs_mutex);
@@ -1821,6 +1853,7 @@
mutex_unlock(&root->fs_info->fs_mutex);
goto out_unlock;
}
+ btrfs_set_trans_block_group(trans, inode);
/* FIXME blocksize != 4096 */
inode->i_blocks += num_blocks << 3;
if (start_pos < inode->i_size) {
@@ -1845,6 +1878,7 @@
}
BUG_ON(ret);
alloc_extent_start = ins.objectid;
+ btrfs_update_inode_block_group(trans, inode);
ret = btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
@@ -2017,6 +2051,7 @@
struct btrfs_leaf *leaf;
struct btrfs_root *new_root;
struct inode *inode;
+ struct inode *dir;
int ret;
u64 objectid;
u64 new_dirid = BTRFS_FIRST_FREE_OBJECTID;
@@ -2025,7 +2060,7 @@
trans = btrfs_start_transaction(root, 1);
BUG_ON(!trans);
- subvol = btrfs_alloc_free_block(trans, root);
+ subvol = btrfs_alloc_free_block(trans, root, 0);
if (subvol == NULL)
return -ENOSPC;
leaf = btrfs_buffer_leaf(subvol);
@@ -2069,10 +2104,9 @@
* insert the directory item
*/
key.offset = (u64)-1;
+ dir = root->fs_info->sb->s_root->d_inode;
ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
- name, namelen,
- root->fs_info->sb->s_root->d_inode->i_ino,
- &key, 0);
+ name, namelen, dir->i_ino, &key, 0);
BUG_ON(ret);
ret = btrfs_commit_transaction(trans, root);
@@ -2084,7 +2118,8 @@
trans = btrfs_start_transaction(new_root, 1);
BUG_ON(!trans);
- inode = btrfs_new_inode(trans, new_root, new_dirid, S_IFDIR | 0700);
+ inode = btrfs_new_inode(trans, new_root, new_dirid,
+ BTRFS_I(dir)->block_group, S_IFDIR | 0700);
inode->i_op = &btrfs_dir_inode_operations;
inode->i_fop = &btrfs_dir_file_operations;