From: majianpeng <majianpeng@gmail.com>
To: nab <nab@linux-iscsi.org>
Cc: linux-scsi <linux-scsi@vger.kernel.org>
Subject: [PATCH 4/6] scsi-mq: init sg in scsi_init_io.
Date: Fri, 29 Nov 2013 16:42:12 +0800 [thread overview]
Message-ID: <201311291642081351818@gmail.com> (raw)
Make scsi-mq support blk-pc-command.
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
---
drivers/scsi/scsi_lib.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index bed596e..679e840 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1059,9 +1059,11 @@ int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask)
/*
* Use pre-allocation of cmd->sdb scatterlists with scsi-mq..
*/
-//FIXME: scsi-mq dif descriptor init within scsi_init_io
if (rq->mq_ctx) {
BUG_ON(rq->nr_phys_segments > SCSI_MAX_SG_SEGMENTS);
+ cmd->sdb.table.sgl = cmd->mq_sgl;
+ cmd->sdb.table.nents = rq->nr_phys_segments;
+ sg_init_table(cmd->sdb.table.sgl, rq->nr_phys_segments);
scsi_init_sgtable(rq, &cmd->sdb);
return BLKPREP_OK;
}
--
1.7.10.4
next reply other threads:[~2013-11-29 8:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-29 8:42 majianpeng [this message]
2013-12-23 6:43 ` [PATCH 4/6] scsi-mq: init sg in scsi_init_io Nicholas A. Bellinger
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