C++ (Cpp) io_free_cache Examples

Example #1

File: unix_io.c Project: ystk/debian-ocfs2-tools

void io_destroy_cache(io_channel *channel)
{
	if (channel->io_cache) {
		io_free_cache(channel->io_cache);
		channel->io_cache = NULL;
	}
}

Example #2

File: unix_io.c Project: djs55/ocfs2-tools

void io_destroy_cache(io_channel *channel)
{
	if (channel->io_cache) {
		if (!--channel->io_cache->ic_use_count)
			io_free_cache(channel->io_cache);
		channel->io_cache = NULL;
	}
}

Example #3

File: unix_io.c Project: djs55/ocfs2-tools

errcode_t io_init_cache(io_channel *channel, size_t nr_blocks)
{
	int i;
	struct io_cache *ic;
	char *dbuf;
	struct io_cache_block *icb_list;
	errcode_t ret;

	ret = ocfs2_malloc0(sizeof(struct io_cache), &ic);
	if (ret)
		goto out;

	ic->ic_nr_blocks = nr_blocks;
	ic->ic_lookup = RB_ROOT;
	INIT_LIST_HEAD(&ic->ic_lru);

	ret = ocfs2_malloc_blocks(channel, nr_blocks, &ic->ic_data_buffer);
	if (ret)
		goto out;
	ic->ic_data_buffer_len = (unsigned long)nr_blocks * channel->io_blksize;

	ret = ocfs2_malloc0(sizeof(struct io_cache_block) * nr_blocks,
			    &ic->ic_metadata_buffer);
	if (ret)
		goto out;
	ic->ic_metadata_buffer_len =
		(unsigned long)nr_blocks * sizeof(struct io_cache_block);

	icb_list = ic->ic_metadata_buffer;
	dbuf = ic->ic_data_buffer;
	for (i = 0; i < nr_blocks; i++) {
		icb_list[i].icb_blkno = UINT64_MAX;
		icb_list[i].icb_buf = dbuf;
		dbuf += channel->io_blksize;
		list_add_tail(&icb_list[i].icb_list, &ic->ic_lru);
	}

	ic->ic_use_count = 1;
	channel->io_cache = ic;

out:
	if (ret)
		io_free_cache(ic);

	return ret;
}