Cross Reference: /mm/readahead.c

Lines Matching refs:ra
25  * memset *ra to zero.
28 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping)
30 	ra->ra_pages = mapping->backing_dev_info->ra_pages;
31 	ra->prev_pos = -1;
248  * for 128k (32 page) max ra
269 static unsigned long get_next_ra_size(struct file_ra_state *ra,
272 	unsigned long cur = ra->size;
344 				 struct file_ra_state *ra,
367 	ra->start = offset;
368 	ra->size = min(size + req_size, max);
369 	ra->async_size = 1;
379 		   struct file_ra_state *ra, struct file *filp,
383 	unsigned long max = max_sane_readahead(ra->ra_pages);
396 	if ((offset == (ra->start + ra->size - ra->async_size) ||
397 	     offset == (ra->start + ra->size))) {
398 		ra->start += ra->size;
399 		ra->size = get_next_ra_size(ra, max);
400 		ra->async_size = ra->size;
420 		ra->start = start;
421 		ra->size = start - offset;	/* old async_size */
422 		ra->size += req_size;
423 		ra->size = get_next_ra_size(ra, max);
424 		ra->async_size = ra->size;
439 	prev_offset = (unsigned long long)ra->prev_pos >> PAGE_CACHE_SHIFT;
447 	if (try_context_readahead(mapping, ra, offset, req_size, max))
457 	ra->start = offset;
458 	ra->size = get_init_ra_size(req_size, max);
459 	ra->async_size = ra->size > req_size ? ra->size - req_size : ra->size;
467 	if (offset == ra->start && ra->size == ra->async_size) {
468 		ra->async_size = get_next_ra_size(ra, max);
469 		ra->size += ra->async_size;
472 	return ra_submit(ra, mapping, filp);
478  * @ra: file_ra_state which holds the readahead state
490 			       struct file_ra_state *ra, struct file *filp,
494 	if (!ra->ra_pages)
504 	ondemand_readahead(mapping, ra, filp, false, offset, req_size);
511  * @ra: file_ra_state which holds the readahead state
525 			   struct file_ra_state *ra, struct file *filp,
530 	if (!ra->ra_pages)
548 	ondemand_readahead(mapping, ra, filp, true, offset, req_size);