From 821de3a27bf33f11ec878562577c586cd5f83c64 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 8 May 2007 19:12:23 +0200 Subject: [PATCH] [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 Signed-off-by: Jens Axboe --- block/ll_rw_blk.c | 1 + 1 file changed, 1 insertion(+) 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; } -- 2.20.1