17 			     io_channel *channel EXT2FS_ATTR((unused)))  in sparse_open()
21 static errcode_t sparse_close(io_channel channel EXT2FS_ATTR((unused)))  in sparse_close()
47 	io_channel		channel;  member
57 static errcode_t sparse_write_blk(io_channel channel, unsigned long block,
79 	return sparse_write_blk(sm->channel, block, nr_blocks, data);  in sparse_import_segment()
136 	sm->channel = io;  in io_manager_configure()
186 				     int flags, io_channel *channel)  in sparse_open_channel()  argument
194 	*channel = io;  in sparse_open_channel()
229 static errcode_t sparse_open(const char *name, int flags, io_channel *channel)  in sparse_open()  argument
238 	retval = sparse_open_channel(&sparse_params, flags, channel);  in sparse_open()
241 	(*channel)->manager = sparse_io_manager;  in sparse_open()
246 static errcode_t sparsefd_open(const char *name, int flags, io_channel *channel)  in sparsefd_open()  argument
255 	retval = sparse_open_channel(&sparse_params, flags, channel);  in sparsefd_open()
258 	(*channel)->manager = sparsefd_io_manager;  in sparsefd_open()
292 static errcode_t sparse_close_channel(io_channel channel)  in sparse_close_channel()  argument
296 	struct sparse_map *sm = channel->private_data;  in sparse_close_channel()
326 	free(channel);  in sparse_close_channel()
330 static errcode_t sparse_close(io_channel channel)  in sparse_close()  argument
333 	struct sparse_map *sm = channel->private_data;  in sparse_close()
336 	retval = sparse_close_channel(channel);  in sparse_close()
343 static errcode_t sparse_set_blksize(io_channel channel, int blksize)  in sparse_set_blksize()  argument
345 	channel->block_size = blksize;  in sparse_set_blksize()
350 			       io_channel channel, struct sparse_map *sm)  in block_to_sparse_block()  argument
355 	ratio = sm->block_size / channel->block_size;  in block_to_sparse_block()
357 	*offset = (block % ratio) * channel->block_size;  in block_to_sparse_block()
362 static errcode_t check_block_size(io_channel channel, struct sparse_map *sm)  in check_block_size()  argument
364 	if (sm->block_size >= channel->block_size)  in check_block_size()
369 static errcode_t sparse_read_blk64(io_channel channel, blk64_t block,  in sparse_read_blk64()  argument
375 	struct sparse_map *sm = channel->private_data;  in sparse_read_blk64()
377 	if (check_block_size(channel, sm))  in sparse_read_blk64()
382 		cur_block = block_to_sparse_block(block, &offset, channel, sm);  in sparse_read_blk64()
390 						    channel, sm);  in sparse_read_blk64()
392 				memcpy(out + (i * channel->block_size),  in sparse_read_blk64()
394 				       channel->block_size);  in sparse_read_blk64()
396 				memset(out + (i * channel->block_size), 0,  in sparse_read_blk64()
397 				       channel->block_size);  in sparse_read_blk64()
403 static errcode_t sparse_read_blk(io_channel channel, unsigned long block,  in sparse_read_blk()  argument
406 	return sparse_read_blk64(channel, block, count, buf);  in sparse_read_blk()
409 static errcode_t sparse_write_blk64(io_channel channel, blk64_t block,  in sparse_write_blk64()  argument
415 	struct sparse_map *sm = channel->private_data;  in sparse_write_blk64()
417 	if (check_block_size(channel, sm))  in sparse_write_blk64()
422 		cur_block = block_to_sparse_block(block, &offset, channel,  in sparse_write_blk64()
435 						    channel, sm);  in sparse_write_blk64()
443 			       in + (i * channel->block_size),  in sparse_write_blk64()
444 			       channel->block_size);  in sparse_write_blk64()
450 static errcode_t sparse_write_blk(io_channel channel, unsigned long block,  in sparse_write_blk()  argument
453 	return sparse_write_blk64(channel, block, count, buf);  in sparse_write_blk()
456 static errcode_t sparse_discard(io_channel channel __attribute__((unused)),  in sparse_discard()  argument
460 	struct sparse_map *sm = channel->private_data;  in sparse_discard()
462 	if (check_block_size(channel, sm))  in sparse_discard()
468 		cur_block = block_to_sparse_block(blk + i, &offset, channel,  in sparse_discard()
478 static errcode_t sparse_zeroout(io_channel channel, blk64_t blk,  in sparse_zeroout()  argument
481 	return sparse_discard(channel, blk, count);  in sparse_zeroout()
484 static errcode_t sparse_flush(io_channel channel __attribute__((unused)))  in sparse_flush()  argument
489 static errcode_t sparse_set_option(io_channel channel __attribute__((unused)),  in sparse_set_option()  argument
497 			io_channel channel __attribute__((unused)),  in sparse_cache_readahead()  argument