Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

block: add bounce support to blk_rq_map_user_iov

Browse source 
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>
This commit is contained in:
FUJITA Tomonori 2008-06-26 19:39:23 +02:00 committed by Jens Axboe
parent c265a7f417
commit 07359fc61b
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
block/blk-map.c
View file

@ -210,6 +210,7 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
if (!bio_flagged(bio, BIO_USER_MAPPED)) if (!bio_flagged(bio, BIO_USER_MAPPED))
rq->cmd_flags |= REQ_COPY_USER; rq->cmd_flags |= REQ_COPY_USER;
blk_queue_bounce(q, &bio);
bio_get(bio); bio_get(bio);
blk_rq_bio_prep(q, rq, bio); blk_rq_bio_prep(q, rq, bio);
rq->buffer = rq->data = NULL; rq->buffer = rq->data = NULL;