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authorMike Christie <michaelc@cs.wisc.edu>2007-05-08 19:12:23 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-05-08 19:12:23 +0200
commit821de3a27bf33f11ec878562577c586cd5f83c64 (patch)
treee18a967de53b5f5eb0c44ee59f1960b5169fd5bf /block/ll_rw_blk.c
parent86aa5ac53e478c94ee39a15b6eadde1ed1317be3 (diff)
downloadlinux-2.6.34-ux500-821de3a27bf33f11ec878562577c586cd5f83c64.tar.gz
[PATCH] ll_rw_blk: fix missing bounce in blk_rq_map_kern()
I think we might just need the blk_map_kern users now. For the async execute I added the bounce code already and the block SG_IO has it atleady. I think the blk_map_kern bounce code got dropped because we thought the correct gfp_t would be passed in. But I think all we need is the patch below and all the paths are take care of. The patch is not tested. Patch was made against scsi-misc. The last place that is sending non sg commands may just be md/dm-emc.c but that is is just waiting on alasdair to take some patches that fix that and a bunch of junk in there including adding bounce support. If the patch below is ok though and dm-emc finally gets converted then it will have sg and bonce buffer support. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/ll_rw_blk.c')
-rw-r--r--block/ll_rw_blk.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 5873861e1db..d99d402953a 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2558,6 +2558,7 @@ int blk_rq_map_kern(request_queue_t *q, struct request *rq, void *kbuf,
bio->bi_rw |= (1 << BIO_RW);
blk_rq_bio_prep(q, rq, bio);
+ blk_queue_bounce(q, &rq->bio);
rq->buffer = rq->data = NULL;
return 0;
}