tree d778cf4f214c9e87ecf4a322b687457391ee2906
parent c265a7f41706cee20508de5b4a919214cfd7a11b
author FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1214501963 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1215084074 +0200

block: add bounce support to blk_rq_map_user_iov

blk_rq_map_user_iov can't handle the bounce buffer (it means that the
bio_map_user_iov path doesn't work with a LLD that needs GFP_DMA).

This patch fixes blk_rq_map_user_iov to support the bounce buffer.

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