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authorChristoph Hellwig <hch@lst.de>2017-01-13 14:29:11 +0300
committerJens Axboe <axboe@fb.com>2017-01-14 01:17:04 +0300
commitfd102b125e174edbea34e6e7a2d371bc7901c53d (patch)
tree724ba8803cc9ac269baff0fe5ff30d1d2fb39932 /drivers
parent2e3258ecfaebace1ceffaa14e0ea94775d54f46f (diff)
downloadlinux-fd102b125e174edbea34e6e7a2d371bc7901c53d.tar.xz
scsi: use blk_rq_payload_bytes
Without that we'll pass a wrong payload size in cmd->sdb, which can lead to hangs with drivers that need the total transfer size. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Chris Valean <v-chvale@microsoft.com> Reported-by: Dexuan Cui <decui@microsoft.com> Fixes: f9d03f96 ("block: improve handling of the magic discard payload") Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/scsi_lib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index c35b6de4ca64..ad4ff8fcd4dd 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1018,7 +1018,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
count = blk_rq_map_sg(req->q, req, sdb->table.sgl);
BUG_ON(count > sdb->table.nents);
sdb->table.nents = count;
- sdb->length = blk_rq_bytes(req);
+ sdb->length = blk_rq_payload_bytes(req);
return BLKPREP_OK;
}