}
}
+enum btrfs_trans_type {
+ TRANS_START,
+ TRANS_JOIN,
+ TRANS_USERSPACE,
+};
+
static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
- int num_blocks, int wait)
+ int num_blocks, int type)
{
struct btrfs_trans_handle *h =
kmem_cache_alloc(btrfs_trans_handle_cachep, GFP_NOFS);
mutex_lock(&root->fs_info->trans_mutex);
if (!root->fs_info->log_root_recovering &&
- ((wait == 1 && !root->fs_info->open_ioctl_trans) || wait == 2))
+ ((type == TRANS_START && !root->fs_info->open_ioctl_trans) ||
+ type == TRANS_USERSPACE))
wait_current_trans(root);
ret = join_transaction(root);
BUG_ON(ret);
h->alloc_exclude_start = 0;
h->delayed_ref_updates = 0;
- if (!current->journal_info)
+ if (!current->journal_info && type != TRANS_USERSPACE)
current->journal_info = h;
root->fs_info->running_transaction->use_count++;
struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
int num_blocks)
{
- return start_transaction(root, num_blocks, 1);
+ return start_transaction(root, num_blocks, TRANS_START);
}
struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
int num_blocks)
{
- return start_transaction(root, num_blocks, 0);
+ return start_transaction(root, num_blocks, TRANS_JOIN);
}
struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
int num_blocks)
{
- return start_transaction(r, num_blocks, 2);
+ return start_transaction(r, num_blocks, TRANS_USERSPACE);
}
/* wait for a transaction commit to be fully complete */
memset(trans, 0, sizeof(*trans));
kmem_cache_free(btrfs_trans_handle_cachep, trans);
+ if (throttle)
+ btrfs_run_delayed_iputs(root);
+
return 0;
}
* those extents are sent to disk but does not wait on them
*/
int btrfs_write_marked_extents(struct btrfs_root *root,
- struct extent_io_tree *dirty_pages)
+ struct extent_io_tree *dirty_pages, int mark)
{
int ret;
int err = 0;
while (1) {
ret = find_first_extent_bit(dirty_pages, start, &start, &end,
- EXTENT_DIRTY);
+ mark);
if (ret)
break;
while (start <= end) {
* on all the pages and clear them from the dirty pages state tree
*/
int btrfs_wait_marked_extents(struct btrfs_root *root,
- struct extent_io_tree *dirty_pages)
+ struct extent_io_tree *dirty_pages, int mark)
{
int ret;
int err = 0;
unsigned long index;
while (1) {
- ret = find_first_extent_bit(dirty_pages, 0, &start, &end,
- EXTENT_DIRTY);
+ ret = find_first_extent_bit(dirty_pages, start, &start, &end,
+ mark);
if (ret)
break;
- clear_extent_dirty(dirty_pages, start, end, GFP_NOFS);
+ clear_extent_bits(dirty_pages, start, end, mark, GFP_NOFS);
while (start <= end) {
index = start >> PAGE_CACHE_SHIFT;
start = (u64)(index + 1) << PAGE_CACHE_SHIFT;
* those extents are on disk for transaction or log commit
*/
int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
- struct extent_io_tree *dirty_pages)
+ struct extent_io_tree *dirty_pages, int mark)
{
int ret;
int ret2;
- ret = btrfs_write_marked_extents(root, dirty_pages);
- ret2 = btrfs_wait_marked_extents(root, dirty_pages);
+ ret = btrfs_write_marked_extents(root, dirty_pages, mark);
+ ret2 = btrfs_wait_marked_extents(root, dirty_pages, mark);
return ret || ret2;
}
return filemap_write_and_wait(btree_inode->i_mapping);
}
return btrfs_write_and_wait_marked_extents(root,
- &trans->transaction->dirty_pages);
+ &trans->transaction->dirty_pages,
+ EXTENT_DIRTY);
}
/*
{
int ret;
u64 old_root_bytenr;
+ u64 old_root_used;
struct btrfs_root *tree_root = root->fs_info->tree_root;
+ old_root_used = btrfs_root_used(&root->root_item);
btrfs_write_dirty_block_groups(trans, root);
while (1) {
old_root_bytenr = btrfs_root_bytenr(&root->root_item);
- if (old_root_bytenr == root->node->start)
+ if (old_root_bytenr == root->node->start &&
+ old_root_used == btrfs_root_used(&root->root_item))
break;
btrfs_set_root_node(&root->root_item, root->node);
&root->root_item);
BUG_ON(ret);
+ old_root_used = btrfs_root_used(&root->root_item);
ret = btrfs_write_dirty_block_groups(trans, root);
BUG_ON(ret);
}
memcpy(&pending->root_key, &key, sizeof(key));
fail:
kfree(new_root_item);
- btrfs_unreserve_metadata_space(root, 6);
return ret;
}
u64 index = 0;
struct btrfs_trans_handle *trans;
struct inode *parent_inode;
- struct inode *inode;
struct btrfs_root *parent_root;
parent_inode = pending->dentry->d_parent->d_inode;
BUG_ON(ret);
- inode = btrfs_lookup_dentry(parent_inode, pending->dentry);
- d_instantiate(pending->dentry, inode);
fail:
btrfs_end_transaction(trans, fs_info->fs_root);
return ret;
mutex_unlock(&root->fs_info->trans_mutex);
if (flush_on_commit) {
- btrfs_start_delalloc_inodes(root);
- ret = btrfs_wait_ordered_extents(root, 0);
+ btrfs_start_delalloc_inodes(root, 1);
+ ret = btrfs_wait_ordered_extents(root, 0, 1);
BUG_ON(ret);
} else if (snap_pending) {
- ret = btrfs_wait_ordered_extents(root, 1);
+ ret = btrfs_wait_ordered_extents(root, 0, 1);
BUG_ON(ret);
}
current->journal_info = NULL;
kmem_cache_free(btrfs_trans_handle_cachep, trans);
+
+ if (current != root->fs_info->transaction_kthread)
+ btrfs_run_delayed_iputs(root);
+
return ret;
}