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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-06-26 19:39:23 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-07-03 13:21:14 +0200 |
| commit | 07359fc61bb8ed786f96a1c24cca6f94dd17e329 (patch) | |
| tree | d778cf4f214c9e87ecf4a322b687457391ee2906 /block/blk-map.c | |
| parent | c265a7f41706cee20508de5b4a919214cfd7a11b (diff) | |
| download | lwn-07359fc61bb8ed786f96a1c24cca6f94dd17e329.tar.gz lwn-07359fc61bb8ed786f96a1c24cca6f94dd17e329.zip | |
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>
Diffstat (limited to 'block/blk-map.c')
| -rw-r--r-- | block/blk-map.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-map.c b/block/blk-map.c index 0b1af5a3537c..813011ef8276 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -210,6 +210,7 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq, if (!bio_flagged(bio, BIO_USER_MAPPED)) rq->cmd_flags |= REQ_COPY_USER; + blk_queue_bounce(q, &bio); bio_get(bio); blk_rq_bio_prep(q, rq, bio); rq->buffer = rq->data = NULL; |