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H A Dblk-map.c07359fc6 Thu Jun 26 12:39:23 CDT 2008 FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 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>
07359fc6 Thu Jun 26 12:39:23 CDT 2008 FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 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>