tree 0b849ba46007c4d7f7a34271a76d58e7406cbad7
parent 7a85f8896f4b4a4a0249563b92af9e3161a6b467
author Tejun Heo <htejun@gmail.com> 1204625897 +0100
committer Jens Axboe <jens.axboe@oracle.com> 1204625897 +0100

block: separate out padding from alignment

Block layer alignment was used for two different purposes - memory
alignment and padding.  This causes problems in lower layers because
drivers which only require memory alignment ends up with adjusted
rq->data_len.  Separate out padding such that padding occurs iff
driver explicitly requests it.

Tomo: restorethe code to update bio in blk_rq_map_user
      introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa
      according to padding alignment.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>