From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Fri, 3 Apr 2009 00:12:20 +0000 (+0900)
Subject: [SCSI] sg: fix iovec bugs introduced by the block layer conversion
X-Git-Tag: v2.6.30-rc1~185^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0fdf96b67ac2649cc1ddb29b316a0db11586c6a8;p=pandora-kernel.git

[SCSI] sg: fix iovec bugs introduced by the block layer conversion

- needs to use copy_from_user for iovec before passing it to
blk_rq_map_user_iov().

- before the block layer conversion, if ->dxfer_len and sum of iovec
disagrees, the shorter one wins. However, currently sg returns
-EINVAL. This restores the old behavior.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

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