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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-09-02 11:20:20 +0400 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 10:56:12 +0400 |
| commit | fad7f01e61bf737fe8a3740d803f000db57ecac6 (patch) | |
| tree | d72959e6b5043bf3436f122ebcddb0c8f41d1acf /block/genhd.c | |
| parent | 818827669d85b84241696ffef2de485db46b0b5e (diff) | |
| download | linux-fad7f01e61bf737fe8a3740d803f000db57ecac6.tar.xz | |
sg: set dxferp to NULL for READ with the older SG interface
With the older SG interface, we don't know a user-space address to
trasfer data when executing a SCSI command. So we can't pass a
user-space address to blk_rq_map_user.
This patch fixes sg to pass a NULL user-space address to
blk_rq_map_user so that it just sets up a request and bios with page
frames propely without data transfer.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/genhd.c')
0 files changed, 0 insertions, 0 deletions