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Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletion

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-01-08 15:46:30 -05:00
parent 3063d29f2a
commit e2008b6140
6 changed files with 26 additions and 0 deletions
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4
fs/btrfs/transaction.c
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@@ -424,6 +424,7 @@ static int drop_dirty_roots(struct btrfs_root *tree_root,
num_bytes = btrfs_root_used(&dirty->root->root_item);
root = dirty->latest_root;
root->fs_info->throttles++;
while(1) {
trans = btrfs_start_transaction(tree_root, 1);
@@ -447,6 +448,7 @@ static int drop_dirty_roots(struct btrfs_root *tree_root,
mutex_lock(&tree_root->fs_info->fs_mutex);
}
BUG_ON(ret);
root->fs_info->throttles--;
num_bytes -= btrfs_root_used(&dirty->root->root_item);
bytes_used = btrfs_root_used(&root->root_item);
@@ -484,6 +486,7 @@ int btrfs_write_ordered_inodes(struct btrfs_trans_handle *trans,
u64 objectid = 0;
int ret;
root->fs_info->throttles++;
while(1) {
ret = btrfs_find_first_ordered_inode(
&cur_trans->ordered_inode_tree,
@@ -523,6 +526,7 @@ int btrfs_write_ordered_inodes(struct btrfs_trans_handle *trans,
mutex_lock(&root->fs_info->fs_mutex);
mutex_lock(&root->fs_info->trans_mutex);
}
root->fs_info->throttles--;
return 0;
}