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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-06-26 19:39:23 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-07-03 13:21:14 +0200
commit07359fc61bb8ed786f96a1c24cca6f94dd17e329 (patch)
treed778cf4f214c9e87ecf4a322b687457391ee2906 /block/blk-map.c
parentc265a7f41706cee20508de5b4a919214cfd7a11b (diff)
downloadkernel-07359fc61bb8ed786f96a1c24cca6f94dd17e329.tar.gz
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.c1
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;