C++ (Cpp) yaffs2_checkpt_space_ok Examples

Example #1

File: yaffs_checkptrw.c Project: openube/android_kernel_sony_c2305

int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing)
{

	dev->checkpt_open_write = writing;

	/* Got the functions we need? */
	if (!dev->param.write_chunk_tags_fn ||
	    !dev->param.read_chunk_tags_fn ||
	    !dev->param.erase_fn || !dev->param.bad_block_fn)
		return 0;

	if (writing && !yaffs2_checkpt_space_ok(dev))
		return 0;

	if (!dev->checkpt_buffer)
		dev->checkpt_buffer =
		    kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS);
	if (!dev->checkpt_buffer)
		return 0;

	dev->checkpt_page_seq = 0;
	dev->checkpt_byte_count = 0;
	dev->checkpt_sum = 0;
	dev->checkpt_xor = 0;
	dev->checkpt_cur_block = -1;
	dev->checkpt_cur_chunk = -1;
	dev->checkpt_next_block = dev->internal_start_block;

	/* Erase all the blocks in the checkpoint area */
	if (writing) {
		memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
		dev->checkpt_byte_offs = 0;
		return yaffs_checkpt_erase(dev);
	} else {
		int i;
		/* Set to a value that will kick off a read */
		dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
		/* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully)
		 * going to be way more than we need */
		dev->blocks_in_checkpt = 0;
		dev->checkpt_max_blocks =
		    (dev->internal_end_block - dev->internal_start_block) / 16 +
		    2;
		dev->checkpt_block_list =
		    kmalloc(sizeof(int) * dev->checkpt_max_blocks, GFP_NOFS);
		if (!dev->checkpt_block_list)
			return 0;

		for (i = 0; i < dev->checkpt_max_blocks; i++)
			dev->checkpt_block_list[i] = -1;
	}

	return 1;
}

Example #2

File: yaffs_checkptrw.c Project: MiniBlu/cm11_kernel_htc_msm8974a3ul

int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing)
{

	dev->checkpt_open_write = writing;

	
	if (!dev->param.write_chunk_tags_fn ||
	    !dev->param.read_chunk_tags_fn ||
	    !dev->param.erase_fn || !dev->param.bad_block_fn)
		return 0;

	if (writing && !yaffs2_checkpt_space_ok(dev))
		return 0;

	if (!dev->checkpt_buffer)
		dev->checkpt_buffer =
		    kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS);
	if (!dev->checkpt_buffer)
		return 0;

	dev->checkpt_page_seq = 0;
	dev->checkpt_byte_count = 0;
	dev->checkpt_sum = 0;
	dev->checkpt_xor = 0;
	dev->checkpt_cur_block = -1;
	dev->checkpt_cur_chunk = -1;
	dev->checkpt_next_block = dev->internal_start_block;

	
	if (writing) {
		memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
		dev->checkpt_byte_offs = 0;
		return yaffs_checkpt_erase(dev);
	} else {
		int i;
		
		dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
		dev->blocks_in_checkpt = 0;
		dev->checkpt_max_blocks =
		    (dev->internal_end_block - dev->internal_start_block) / 16 +
		    2;
		dev->checkpt_block_list =
		    kmalloc(sizeof(int) * dev->checkpt_max_blocks, GFP_NOFS);
		if (!dev->checkpt_block_list)
			return 0;

		for (i = 0; i < dev->checkpt_max_blocks; i++)
			dev->checkpt_block_list[i] = -1;
	}

	return 1;
}