linux/mm/process_vm_access.c

20  * @pages: array of pointers to pages we want to copy
22  * @len: number of bytes to copy
23  * @iter: where to copy to/from locally
24  * @vm_write: 0 means copy from, 1 means copy to
33 	/* Do the copy for each page */  in process_vm_rw_pages()
36 		size_t copy = PAGE_SIZE - offset;  in process_vm_rw_pages()  local
39 		if (copy > len)  in process_vm_rw_pages()
40 			copy = len;  in process_vm_rw_pages()
43 			copied = copy_page_from_iter(page, offset, copy, iter);  in process_vm_rw_pages()
45 			copied = copy_page_to_iter(page, offset, copy, iter);  in process_vm_rw_pages()
48 		if (copied < copy && iov_iter_count(iter))  in process_vm_rw_pages()
55 /* Maximum number of pages kmalloc'd to hold struct page's during copy */
61  * @len: size of area to copy to/from
62  * @iter: where to copy to/from locally
67  * @vm_write: 0 means copy from, 1 means copy to
140  * @iter: where to copy to/from locally
141  * @rvec: iovec array specifying where to copy to/from in the other process
222 	/* If we have managed to copy any data at all then  in process_vm_rw_core()
242  * @lvec: iovec array specifying where to copy to/from locally
244  * @rvec: iovec array specifying where to copy to/from in the other process