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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-08-28 16:17:06 +0900
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:10 +0200
commit152e283fdfea0cd11e297d982378b55937842dde (patch)
treea97a57108353f167a1e2911e8ee09c527ef42d3e /block/scsi_ioctl.c
parenta3bce90edd8f6cafe3f63b1a943800792e830178 (diff)
downloadlinux-152e283fdfea0cd11e297d982378b55937842dde.tar.gz
block: introduce struct rq_map_data to use reserved pages
This patch introduces struct rq_map_data to enable bio_copy_use_iov() use reserved pages. Currently, bio_copy_user_iov allocates bounce pages but drivers/scsi/sg.c wants to allocate pages by itself and use them. struct rq_map_data can be used to pass allocated pages to bio_copy_user_iov. The current users of bio_copy_user_iov simply passes NULL (they don't want to use pre-allocated pages). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Douglas Gilbert <dougg@torque.net> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/scsi_ioctl.c')
-rw-r--r--block/scsi_ioctl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index f49d6a11a69..c34272a348f 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -314,11 +314,11 @@ static int sg_io(struct file *file, struct request_queue *q,
goto out;
}
- ret = blk_rq_map_user_iov(q, rq, iov, hdr->iovec_count,
+ ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count,
hdr->dxfer_len, GFP_KERNEL);
kfree(iov);
} else if (hdr->dxfer_len)
- ret = blk_rq_map_user(q, rq, hdr->dxferp, hdr->dxfer_len,
+ ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
GFP_KERNEL);
if (ret)