48 	unsigned long sz;  in size_inside_page()  local
50 	sz = PAGE_SIZE - (start & (PAGE_SIZE - 1));  in size_inside_page()
52 	return min(sz, size);  in size_inside_page()
119 	ssize_t read, sz;  in read_mem()  local
133 		sz = size_inside_page(p, count);  in read_mem()
134 		if (sz > 0) {  in read_mem()
135 			if (clear_user(buf, sz))  in read_mem()
137 			buf += sz;  in read_mem()
138 			p += sz;  in read_mem()
139 			count -= sz;  in read_mem()
140 			read += sz;  in read_mem()
153 		sz = size_inside_page(p, count);  in read_mem()
163 			remaining = clear_user(buf, sz);  in read_mem()
174 			probe = copy_from_kernel_nofault(bounce, ptr, sz);  in read_mem()
179 			remaining = copy_to_user(buf, bounce, sz);  in read_mem()
185 		buf += sz;  in read_mem()
186 		p += sz;  in read_mem()
187 		count -= sz;  in read_mem()
188 		read += sz;  in read_mem()
206 	ssize_t written, sz;  in write_mem()  local
221 		sz = size_inside_page(p, count);  in write_mem()
223 		buf += sz;  in write_mem()
224 		p += sz;  in write_mem()
225 		count -= sz;  in write_mem()
226 		written += sz;  in write_mem()
233 		sz = size_inside_page(p, count);  in write_mem()
253 			copied = copy_from_user(ptr, buf, sz);  in write_mem()
256 				written += sz - copied;  in write_mem()
263 		buf += sz;  in write_mem()
264 		p += sz;  in write_mem()
265 		count -= sz;  in write_mem()
266 		written += sz;  in write_mem()
444 	ssize_t low_count, read, sz;  in read_kmem()  local
457 			sz = size_inside_page(p, low_count);  in read_kmem()
458 			if (clear_user(buf, sz))  in read_kmem()
460 			buf += sz;  in read_kmem()
461 			p += sz;  in read_kmem()
462 			read += sz;  in read_kmem()
463 			low_count -= sz;  in read_kmem()
464 			count -= sz;  in read_kmem()
468 			sz = size_inside_page(p, low_count);  in read_kmem()
479 			if (copy_to_user(buf, kbuf, sz))  in read_kmem()
481 			buf += sz;  in read_kmem()
482 			p += sz;  in read_kmem()
483 			read += sz;  in read_kmem()
484 			low_count -= sz;  in read_kmem()
485 			count -= sz;  in read_kmem()
498 			sz = size_inside_page(p, count);  in read_kmem()
503 			sz = vread(kbuf, (char *)p, sz);  in read_kmem()
504 			if (!sz)  in read_kmem()
506 			if (copy_to_user(buf, kbuf, sz)) {  in read_kmem()
510 			count -= sz;  in read_kmem()
511 			buf += sz;  in read_kmem()
512 			read += sz;  in read_kmem()
513 			p += sz;  in read_kmem()
527 	ssize_t written, sz;  in do_write_kmem()  local
534 		sz = size_inside_page(p, count);  in do_write_kmem()
536 		buf += sz;  in do_write_kmem()
537 		p += sz;  in do_write_kmem()
538 		count -= sz;  in do_write_kmem()
539 		written += sz;  in do_write_kmem()
546 		sz = size_inside_page(p, count);  in do_write_kmem()
557 		copied = copy_from_user(ptr, buf, sz);  in do_write_kmem()
559 			written += sz - copied;  in do_write_kmem()
564 		buf += sz;  in do_write_kmem()
565 		p += sz;  in do_write_kmem()
566 		count -= sz;  in do_write_kmem()
567 		written += sz;  in do_write_kmem()
604 			unsigned long sz = size_inside_page(p, count);  in write_kmem()  local
611 			n = copy_from_user(kbuf, buf, sz);  in write_kmem()
616 			vwrite(kbuf, (char *)p, sz);  in write_kmem()
617 			count -= sz;  in write_kmem()
618 			buf += sz;  in write_kmem()
619 			virtr += sz;  in write_kmem()
620 			p += sz;  in write_kmem()