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From: Ming Lei <ming.lei@redhat.com>
To: linux-scsi@vger.kernel.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Bart Van Assche <bvanassche@acm.org>,
	Hannes Reinecke <hare@suse.com>, Christoph Hellwig <hch@lst.de>,
	Jim Gill <jgill@vmware.com>, Cathy Avery <cavery@redhat.com>,
	"Ewan D . Milne" <emilne@redhat.com>,
	Brian King <brking@us.ibm.com>,
	James Smart <james.smart@broadcom.com>,
	"Juergen E . Fischer" <fischer@norbit.de>,
	Michael Schmitz <schmitzmic@gmail.com>,
	Finn Thain <fthain@telegraphics.com.au>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	devel@driverdev.osuosl.org, linux-usb@vger.kernel.org,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Benjamin Block <bblock@linux.ibm.com>,
	Ming Lei <ming.lei@redhat.com>
Subject: [PATCH V3 01/15] scsi: vmw_pscsi: use sg helper to operate scatterlist
Date: Fri, 14 Jun 2019 10:53:02 +0800	[thread overview]
Message-ID: <20190614025316.7360-2-ming.lei@redhat.com> (raw)
In-Reply-To: <20190614025316.7360-1-ming.lei@redhat.com>

Use the scatterlist iterators and remove direct indexing of the scatterlist
array.

This way allows us to pre-allocate one small scatterlist, which can be chained
with one runtime allocated scatterlist if the pre-allocated one isn't enough
for the whole request.

Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/scsi/vmw_pvscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
index ecee4b3ff073..d71abd416eb4 100644
--- a/drivers/scsi/vmw_pvscsi.c
+++ b/drivers/scsi/vmw_pvscsi.c
@@ -335,7 +335,7 @@ static void pvscsi_create_sg(struct pvscsi_ctx *ctx,
 	BUG_ON(count > PVSCSI_MAX_NUM_SG_ENTRIES_PER_SEGMENT);
 
 	sge = &ctx->sgl->sge[0];
-	for (i = 0; i < count; i++, sg++) {
+	for (i = 0; i < count; i++, sg = sg_next(sg)) {
 		sge[i].addr   = sg_dma_address(sg);
 		sge[i].length = sg_dma_len(sg);
 		sge[i].flags  = 0;
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com>
To: linux-scsi@vger.kernel.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Michael Schmitz <schmitzmic@gmail.com>,
	devel@driverdev.osuosl.org, Hannes Reinecke <hare@suse.com>,
	Benjamin Block <bblock@linux.ibm.com>,
	Bart Van Assche <bvanassche@acm.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, James Smart <james.smart@broadcom.com>,
	"Ewan D . Milne" <emilne@redhat.com>, Jim Gill <jgill@vmware.com>,
	James Bottomley <James.Bottomley@HansenPartnership.com>,
	Brian King <brking@us.ibm.com>,
	Finn Thain <fthain@telegraphics.com.au>,
	"Juergen E . Fischer" <fischer@norbit.de>,
	Ming Lei <ming.lei@redhat.com>, Christoph Hellwig <hch@lst.de>,
	Dan Carpenter <dan.carpenter@oracle.com>
Subject: [PATCH V3 01/15] scsi: vmw_pscsi: use sg helper to operate scatterlist
Date: Fri, 14 Jun 2019 10:53:02 +0800	[thread overview]
Message-ID: <20190614025316.7360-2-ming.lei@redhat.com> (raw)
In-Reply-To: <20190614025316.7360-1-ming.lei@redhat.com>

Use the scatterlist iterators and remove direct indexing of the scatterlist
array.

This way allows us to pre-allocate one small scatterlist, which can be chained
with one runtime allocated scatterlist if the pre-allocated one isn't enough
for the whole request.

Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/scsi/vmw_pvscsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
index ecee4b3ff073..d71abd416eb4 100644
--- a/drivers/scsi/vmw_pvscsi.c
+++ b/drivers/scsi/vmw_pvscsi.c
@@ -335,7 +335,7 @@ static void pvscsi_create_sg(struct pvscsi_ctx *ctx,
 	BUG_ON(count > PVSCSI_MAX_NUM_SG_ENTRIES_PER_SEGMENT);
 
 	sge = &ctx->sgl->sge[0];
-	for (i = 0; i < count; i++, sg++) {
+	for (i = 0; i < count; i++, sg = sg_next(sg)) {
 		sge[i].addr   = sg_dma_address(sg);
 		sge[i].length = sg_dma_len(sg);
 		sge[i].flags  = 0;
-- 
2.20.1

  reply	other threads:[~2019-06-14  2:53 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-14  2:53 [PATCH V3 00/15] use sg helper to operate scatterlist Ming Lei
2019-06-14  2:53 ` Ming Lei
2019-06-14  2:53 ` Ming Lei [this message]
2019-06-14  2:53   ` [PATCH V3 01/15] scsi: vmw_pscsi: " Ming Lei
2019-06-14  2:53 ` [PATCH V3 02/15] scsi: advansys: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 03/15] scsi: lpfc: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 04/15] scsi: mvumi: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 05/15] scsi: ipr: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 06/15] scsi: pmcraid: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 07/15] usb: image: microtek: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  5:39   ` Finn Thain
2019-06-14  5:39     ` Finn Thain
2019-06-14  6:57     ` Ming Lei
2019-06-14  6:57       ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 08/15] staging: unisys: visorhba: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  5:48   ` Greg Kroah-Hartman
2019-06-14  5:48     ` Greg Kroah-Hartman
2019-06-14  2:53 ` [PATCH V3 09/15] s390: zfcp_fc: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-16 16:25   ` Benjamin Block
2019-06-16 16:25     ` Benjamin Block
2019-06-16 16:25     ` Benjamin Block
2019-06-14  2:53 ` [PATCH V3 10/15] scsi: aha152x: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  5:27   ` Finn Thain
2019-06-14  5:27     ` Finn Thain
2019-06-14  8:17     ` Ming Lei
2019-06-14  8:17       ` Ming Lei
2019-06-14 10:36       ` Finn Thain
2019-06-14 10:36         ` Finn Thain
2019-06-17  1:14         ` Ming Lei
2019-06-17  1:14           ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 11/15] scsi: imm: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 12/15] scsi: pcmcia: nsp_cs: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 13/15] scsi: ppa: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 14/15] scsi: wd33c93: " Ming Lei
2019-06-14  2:53   ` Ming Lei
2019-06-14  2:53 ` [PATCH V3 15/15] NCR5380: Support chained sg lists Ming Lei
2019-06-14  2:53   ` Ming Lei

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