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Btrfs: Reduce stack usage in the resizer, fix 32 bit compiles

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-01-03 09:08:48 -05:00
parent 56b453c92f
commit 4313b3994d
5 changed files with 63 additions and 43 deletions
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20
fs/btrfs/transaction.c
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@@ -481,12 +481,10 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
struct btrfs_transaction *cur_trans;
struct btrfs_transaction *prev_trans = NULL;
struct list_head dirty_fs_roots;
struct extent_map_tree pinned_copy;
struct extent_map_tree *pinned_copy;
DEFINE_WAIT(wait);
int ret;
extent_map_tree_init(&pinned_copy,
root->fs_info->btree_inode->i_mapping, GFP_NOFS);
INIT_LIST_HEAD(&dirty_fs_roots);
mutex_lock(&root->fs_info->trans_mutex);
@@ -507,6 +505,14 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
mutex_lock(&root->fs_info->fs_mutex);
return 0;
}
pinned_copy = kmalloc(sizeof(*pinned_copy), GFP_NOFS);
if (!pinned_copy)
return -ENOMEM;
extent_map_tree_init(pinned_copy,
root->fs_info->btree_inode->i_mapping, GFP_NOFS);
trans->transaction->in_commit = 1;
cur_trans = trans->transaction;
if (cur_trans->list.prev != &root->fs_info->trans_list) {
@@ -568,16 +574,20 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
&root->fs_info->super_copy, 0,
sizeof(root->fs_info->super_copy));
btrfs_copy_pinned(root, &pinned_copy);
btrfs_copy_pinned(root, pinned_copy);
mutex_unlock(&root->fs_info->trans_mutex);
mutex_unlock(&root->fs_info->fs_mutex);
ret = btrfs_write_and_wait_transaction(trans, root);
BUG_ON(ret);
write_ctree_super(trans, root);
mutex_lock(&root->fs_info->fs_mutex);
btrfs_finish_extent_commit(trans, root, &pinned_copy);
btrfs_finish_extent_commit(trans, root, pinned_copy);
mutex_lock(&root->fs_info->trans_mutex);
kfree(pinned_copy);
cur_trans->commit_done = 1;
root->fs_info->last_trans_committed = cur_trans->transid;
wake_up(&cur_trans->commit_wait);