From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Fri, 11 Apr 2008 10:56:49 +0000 (+0200)
Subject: block: convert bio_copy_user to bio_copy_user_iov
X-Git-Tag: v2.6.26-rc1~1115^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5dec1c3034f1ae3503efbf641ff3b0273b64797;p=pandora-kernel.git

block: convert bio_copy_user to bio_copy_user_iov

This patch enables bio_copy_user to take struct sg_iovec (renamed
bio_copy_user_iov). bio_copy_user uses bio_copy_user_iov internally as
bio_map_user uses bio_map_user_iov.

The major changes are:

- adds sg_iovec array to struct bio_map_data

- adds __bio_copy_iov that copy data between bio and
sg_iovec. bio_copy_user_iov and bio_uncopy_user use it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

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