From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Mon, 25 Aug 2008 18:36:08 +0000 (+0200)
Subject: bio: fix __bio_copy_iov() handling of bio->bv_len
X-Git-Tag: v2.6.27-rc5~19^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aefcc28a3a63ac33a298777aa50ba43641c75241;p=pandora-kernel.git

bio: fix __bio_copy_iov() handling of bio->bv_len

The commit c5dec1c3034f1ae3503efbf641ff3b0273b64797 introduced
__bio_copy_iov() to add bounce support to blk_rq_map_user_iov.

__bio_copy_iov() uses bio->bv_len to copy data for READ commands after
the completion but it doesn't work with a request that partially
completed. SCSI always completes a PC request as a whole but seems
some don't.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

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