From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Thu, 18 Dec 2008 05:49:38 +0000 (+0900)
Subject: [SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE
X-Git-Tag: v2.6.29-rc1~41^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97ae77a1cd332c7b011d71315c8faabce6840c72;p=pandora-kernel.git

[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>
---

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