pktcdvd.c (086fa5ff0854c676ec333760f4c0154b3b242616) pktcdvd.c (8a78362c4eefc1deddbefe2c7f38aabbc2429d6b)
1/*
2 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
3 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
4 * Copyright (C) 2006 Thomas Maier <balagi@justmail.de>
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License. See linux/COPYING for more information.
8 *

--- 936 unchanged lines hidden (view full) ---

945
946/*
947 * Special care is needed if the underlying block device has a small
948 * max_phys_segments value.
949 */
950static int pkt_set_segment_merging(struct pktcdvd_device *pd, struct request_queue *q)
951{
952 if ((pd->settings.size << 9) / CD_FRAMESIZE
1/*
2 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
3 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
4 * Copyright (C) 2006 Thomas Maier <balagi@justmail.de>
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License. See linux/COPYING for more information.
8 *

--- 936 unchanged lines hidden (view full) ---

945
946/*
947 * Special care is needed if the underlying block device has a small
948 * max_phys_segments value.
949 */
950static int pkt_set_segment_merging(struct pktcdvd_device *pd, struct request_queue *q)
951{
952 if ((pd->settings.size << 9) / CD_FRAMESIZE
953 <= queue_max_phys_segments(q)) {
953 <= queue_max_segments(q)) {
954 /*
955 * The cdrom device can handle one segment/frame
956 */
957 clear_bit(PACKET_MERGE_SEGS, &pd->flags);
958 return 0;
959 } else if ((pd->settings.size << 9) / PAGE_SIZE
954 /*
955 * The cdrom device can handle one segment/frame
956 */
957 clear_bit(PACKET_MERGE_SEGS, &pd->flags);
958 return 0;
959 } else if ((pd->settings.size << 9) / PAGE_SIZE
960 <= queue_max_phys_segments(q)) {
960 <= queue_max_segments(q)) {
961 /*
962 * We can handle this case at the expense of some extra memory
963 * copies during write operations
964 */
965 set_bit(PACKET_MERGE_SEGS, &pd->flags);
966 return 0;
967 } else {
968 printk(DRIVER_NAME": cdrom max_phys_segments too small\n");

--- 2124 unchanged lines hidden --- 		961 /*
962 * We can handle this case at the expense of some extra memory
963 * copies during write operations
964 */
965 set_bit(PACKET_MERGE_SEGS, &pd->flags);
966 return 0;
967 } else {
968 printk(DRIVER_NAME": cdrom max_phys_segments too small\n");

--- 2124 unchanged lines hidden ---