diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-12-18 14:49:38 +0900 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-01-02 11:10:35 -0600 |
| commit | 97ae77a1cd332c7b011d71315c8faabce6840c72 (patch) | |
| tree | fc243ca28ea474eaf81729079eeb3b259cd1b81b /include/linux/blkdev.h | |
| parent | 56c451f4b583ccdf80c9e676179c9cb49de86745 (diff) | |
[SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE
The commit 818827669d85b84241696ffef2de485db46b0b5e (block: make
blk_rq_map_user take a NULL user-space buffer) extended
blk_rq_map_user to accept a NULL user-space buffer with a READ
command. It was necessary to convert sg to use the block layer mapping
API.
This patch extends blk_rq_map_user again for a WRITE command. It is
necessary to convert st and osst drivers to use the block layer
apping API.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 811e5342c45..044467ef7b1 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -691,6 +691,7 @@ struct rq_map_data { int page_order; int nr_entries; unsigned long offset; + int null_mapped; }; struct req_iterator { |