Linux-USB Archive on lore.kernel.org
 help / color / Atom feed
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 V5 03/16] scsi: lpfc: use sg helper to operate scatterlist
Date: Tue, 18 Jun 2019 09:37:44 +0800
Message-ID: <20190618013757.22401-4-ming.lei@redhat.com> (raw)
In-Reply-To: <20190618013757.22401-1-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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/scsi/lpfc/lpfc_nvmet.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index f3d9a5545164..3f803982bd1e 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -2887,8 +2887,7 @@ lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
 	nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
 	nvmewqe->context1 = ndlp;
 
-	for (i = 0; i < rsp->sg_cnt; i++) {
-		sgel = &rsp->sg[i];
+	for_each_sg(rsp->sg, sgel, rsp->sg_cnt, i) {
 		physaddr = sg_dma_address(sgel);
 		cnt = sg_dma_len(sgel);
 		sgl->addr_hi = putPaddrHigh(physaddr);
-- 
2.20.1


  parent reply index

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-18  1:37 [PATCH V5 00/16] " Ming Lei
2019-06-18  1:37 ` [PATCH V5 01/16] scsi: vmw_pscsi: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 02/16] scsi: advansys: " Ming Lei
2019-06-18  1:37 ` Ming Lei [this message]
2019-06-18  1:37 ` [PATCH V5 04/16] scsi: mvumi: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 05/16] scsi: ipr: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 06/16] scsi: pmcraid: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 07/16] usb: image: microtek: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 08/16] staging: unisys: visorhba: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 09/16] staging: rtsx: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 10/16] s390: zfcp_fc: " Ming Lei
2019-06-24 15:13   ` Steffen Maier
2019-06-25  1:19     ` Ming Lei
2019-06-25  2:01       ` Finn Thain
2019-06-25  2:30         ` Ming Lei
2019-06-25  3:42           ` Finn Thain
2019-06-25 10:51       ` Steffen Maier
2019-06-26  3:07         ` Ming Lei
2019-06-26  8:17           ` Steffen Maier
2019-06-18  1:37 ` [PATCH V5 11/16] scsi: aha152x: " Ming Lei
2019-06-18  3:54   ` Finn Thain
2019-06-18  1:37 ` [PATCH V5 12/16] scsi: imm: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 13/16] scsi: pcmcia: nsp_cs: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 14/16] scsi: ppa: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 15/16] scsi: wd33c93: " Ming Lei
2019-06-18  1:37 ` [PATCH V5 16/16] NCR5380: Support chained sg lists Ming Lei
2019-06-19  0:29 ` [PATCH V5 00/16] use sg helper to operate scatterlist Martin K. Petersen
2019-06-19 19:43   ` Bart Van Assche
2019-06-19 19:55     ` Martin K. Petersen
2019-06-24 12:40       ` Ming Lei
2019-06-24 12:54         ` Martin K. Petersen

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190618013757.22401-4-ming.lei@redhat.com \
    --to=ming.lei@redhat.com \
    --cc=James.Bottomley@HansenPartnership.com \
    --cc=bblock@linux.ibm.com \
    --cc=brking@us.ibm.com \
    --cc=bvanassche@acm.org \
    --cc=cavery@redhat.com \
    --cc=dan.carpenter@oracle.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=emilne@redhat.com \
    --cc=fischer@norbit.de \
    --cc=fthain@telegraphics.com.au \
    --cc=gregkh@linuxfoundation.org \
    --cc=hare@suse.com \
    --cc=hch@lst.de \
    --cc=james.smart@broadcom.com \
    --cc=jgill@vmware.com \
    --cc=linux-scsi@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=schmitzmic@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-USB Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-usb/0 linux-usb/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-usb linux-usb/ https://lore.kernel.org/linux-usb \
		linux-usb@vger.kernel.org linux-usb@archiver.kernel.org
	public-inbox-index linux-usb


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-usb


AGPL code for this site: git clone https://public-inbox.org/ public-inbox