From: Ye Bin <yebin10@huawei.com>
To: <martin.petersen@oracle.com>, <jejb@linux.ibm.com>
Cc: <yebin10@huawei.com>, <linux-scsi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH] scsi: Refactor scsi_mq_setup_tags function
Date: Mon, 18 May 2020 15:47:32 +0800 [thread overview]
Message-ID: <20200518074732.39679-1-yebin10@huawei.com> (raw)
"shost->tag_set" is used too many times, introduce temporary parameter
"tag_set" instead of "&shost->tag_set".
Signed-off-by: Ye Bin <yebin10@huawei.com>
---
drivers/scsi/scsi_lib.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 47835c4b4ee0..be1a4a9a5fca 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1870,6 +1870,7 @@ struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev)
int scsi_mq_setup_tags(struct Scsi_Host *shost)
{
unsigned int cmd_size, sgl_size;
+ struct blk_mq_tag_set *tag_set = &shost->tag_set;
sgl_size = max_t(unsigned int, sizeof(struct scatterlist),
scsi_mq_inline_sgl_size(shost));
@@ -1878,21 +1879,21 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost)
cmd_size += sizeof(struct scsi_data_buffer) +
sizeof(struct scatterlist) * SCSI_INLINE_PROT_SG_CNT;
- memset(&shost->tag_set, 0, sizeof(shost->tag_set));
+ memset(tag_set, 0, sizeof(*tag_set));
if (shost->hostt->commit_rqs)
- shost->tag_set.ops = &scsi_mq_ops;
+ tag_set->ops = &scsi_mq_ops;
else
- shost->tag_set.ops = &scsi_mq_ops_no_commit;
- shost->tag_set.nr_hw_queues = shost->nr_hw_queues ? : 1;
- shost->tag_set.queue_depth = shost->can_queue;
- shost->tag_set.cmd_size = cmd_size;
- shost->tag_set.numa_node = NUMA_NO_NODE;
- shost->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
- shost->tag_set.flags |=
+ tag_set->ops = &scsi_mq_ops_no_commit;
+ tag_set->nr_hw_queues = shost->nr_hw_queues ? : 1;
+ tag_set->queue_depth = shost->can_queue;
+ tag_set->cmd_size = cmd_size;
+ tag_set->numa_node = NUMA_NO_NODE;
+ tag_set->flags = BLK_MQ_F_SHOULD_MERGE;
+ tag_set->flags |=
BLK_ALLOC_POLICY_TO_MQ_FLAG(shost->hostt->tag_alloc_policy);
- shost->tag_set.driver_data = shost;
+ tag_set->driver_data = shost;
- return blk_mq_alloc_tag_set(&shost->tag_set);
+ return blk_mq_alloc_tag_set(tag_set);
}
void scsi_mq_destroy_tags(struct Scsi_Host *shost)
--
2.21.3
next reply other threads:[~2020-05-18 7:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 7:47 Ye Bin [this message]
2020-05-18 14:37 ` Bart Van Assche
2020-05-20 2:30 ` Martin K. Petersen
Reply instructions:
You may reply publicly 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=20200518074732.39679-1-yebin10@huawei.com \
--to=yebin10@huawei.com \
--cc=jejb@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome