755 static ssize_t cache_read(struct file *filp, char __user *buf, size_t count,  in cache_read()  argument
763 	if (count == 0)  in cache_read()
802 		if (rp->offset + count > rq->len)  in cache_read()
803 			count = rq->len - rp->offset;  in cache_read()
805 		if (copy_to_user(buf, rq->buf + rp->offset, count))  in cache_read()
807 		rp->offset += count;  in cache_read()
834 	return err ? err :  count;  in cache_read()
838 				 size_t count, struct cache_detail *cd)  in cache_do_downcall()  argument
842 	if (count == 0)  in cache_do_downcall()
844 	if (copy_from_user(kaddr, buf, count))  in cache_do_downcall()
846 	kaddr[count] = '\0';  in cache_do_downcall()
847 	ret = cd->cache_parse(cd, kaddr, count);  in cache_do_downcall()
849 		ret = count;  in cache_do_downcall()
854 				   size_t count, struct cache_detail *cd)  in cache_slow_downcall()  argument
859 	if (count >= sizeof(write_buf))  in cache_slow_downcall()
862 	ret = cache_do_downcall(write_buf, buf, count, cd);  in cache_slow_downcall()
870 			      size_t count, struct cache_detail *cd)  in cache_downcall()  argument
876 	if (count >= PAGE_CACHE_SIZE)  in cache_downcall()
884 	ret = cache_do_downcall(kaddr, buf, count, cd);  in cache_downcall()
890 	return cache_slow_downcall(buf, count, cd);  in cache_downcall()
894 			   size_t count, loff_t *ppos,  in cache_write()  argument
905 	ret = cache_downcall(mapping, buf, count, cd);  in cache_write()
1426 			  size_t count, loff_t *ppos,  in read_flush()  argument
1438 	if (len > count)  in read_flush()
1439 		len = count;  in read_flush()
1447 			   size_t count, loff_t *ppos,  in write_flush()  argument
1453 	if (*ppos || count > sizeof(tbuf)-1)  in write_flush()
1455 	if (copy_from_user(tbuf, buf, count))  in write_flush()
1457 	tbuf[count] = 0;  in write_flush()
1467 	*ppos += count;  in write_flush()
1468 	return count;  in write_flush()
1472 				 size_t count, loff_t *ppos)  in cache_read_procfs()  argument
1476 	return cache_read(filp, buf, count, ppos, cd);  in cache_read_procfs()
1480 				  size_t count, loff_t *ppos)  in cache_write_procfs()  argument
1484 	return cache_write(filp, buf, count, ppos, cd);  in cache_write_procfs()
1564 			    size_t count, loff_t *ppos)  in read_flush_procfs()  argument
1568 	return read_flush(filp, buf, count, ppos, cd);  in read_flush_procfs()
1573 				  size_t count, loff_t *ppos)  in write_flush_procfs()  argument
1577 	return write_flush(filp, buf, count, ppos, cd);  in write_flush_procfs()
1704 				 size_t count, loff_t *ppos)  in cache_read_pipefs()  argument
1708 	return cache_read(filp, buf, count, ppos, cd);  in cache_read_pipefs()
1712 				  size_t count, loff_t *ppos)  in cache_write_pipefs()  argument
1716 	return cache_write(filp, buf, count, ppos, cd);  in cache_write_pipefs()
1796 			    size_t count, loff_t *ppos)  in read_flush_pipefs()  argument
1800 	return read_flush(filp, buf, count, ppos, cd);  in read_flush_pipefs()
1805 				  size_t count, loff_t *ppos)  in write_flush_pipefs()  argument
1809 	return write_flush(filp, buf, count, ppos, cd);  in write_flush_pipefs()