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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-08-28 16:17:06 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:10 +0200 |
| commit | 152e283fdfea0cd11e297d982378b55937842dde (patch) | |
| tree | a97a57108353f167a1e2911e8ee09c527ef42d3e /block/scsi_ioctl.c | |
| parent | a3bce90edd8f6cafe3f63b1a943800792e830178 (diff) | |
| download | lwn-152e283fdfea0cd11e297d982378b55937842dde.tar.gz lwn-152e283fdfea0cd11e297d982378b55937842dde.zip | |
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.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index f49d6a11a69e..c34272a348fe 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) |