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authorMike Christie <michaelc@cs.wisc.edu>2006-12-01 10:40:55 +0100
committerJens Axboe <jens.axboe@oracle.com>2006-12-01 10:40:55 +0100
commit0e75f9063f5c55fb0b0b546a7c356f8ec186825e (patch)
treedb138f641175403546c2147def4b405f3ff453a8 /drivers/cdrom
parentad2d7225709b11da47e092634cbdf0591829ae9c (diff)
downloadblackbird-op-linux-0e75f9063f5c55fb0b0b546a7c356f8ec186825e.tar.gz
blackbird-op-linux-0e75f9063f5c55fb0b0b546a7c356f8ec186825e.zip
[PATCH] block: support larger block pc requests
This patch modifies blk_rq_map/unmap_user() and the cdrom and scsi_ioctl.c users so that it supports requests larger than bio by chaining them together. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/cdrom')
-rw-r--r--drivers/cdrom/cdrom.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 7ea0f48f8fa6..2df5cf4ec743 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -2133,16 +2133,14 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
rq->timeout = 60 * HZ;
bio = rq->bio;
- if (rq->bio)
- blk_queue_bounce(q, &rq->bio);
-
if (blk_execute_rq(q, cdi->disk, rq, 0)) {
struct request_sense *s = rq->sense;
ret = -EIO;
cdi->last_sense = s->sense_key;
}
- if (blk_rq_unmap_user(bio, len))
+ rq->bio = bio;
+ if (blk_rq_unmap_user(rq))
ret = -EFAULT;
if (ret)
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