From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Fam Zheng <famz@redhat.com>
Cc: linux-kernel@vger.kernel.org,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Subject: Re: [PATCH] sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable
Date: Mon, 27 Mar 2017 22:11:59 -0400 [thread overview]
Message-ID: <yq1r31i5evk.fsf@oracle.com> (raw)
In-Reply-To: <20170327141831.20936-1-famz@redhat.com> (Fam Zheng's message of "Mon, 27 Mar 2017 22:18:31 +0800")
Fam Zheng <famz@redhat.com> writes:
Hi Fam,
> --- a/drivers/scsi/sd.c
> +++ b/drivers/scsi/sd.c
> @@ -2957,6 +2957,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
> rw_max = logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
> } else
> rw_max = BLK_DEF_MAX_SECTORS;
> + rw_max = min_not_zero(rw_max, dev_max);
rw_max is in sectors, dev_max is in logical blocks.
>
> /* Combine with controller limits */
> q->limits.max_sectors = min(rw_max, queue_max_hw_sectors(q));
--
Martin K. Petersen Oracle Linux Engineering
prev parent reply other threads:[~2017-03-28 2:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-27 14:18 [PATCH] sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable Fam Zheng
2017-03-27 16:06 ` Laurence Oberman
2017-03-28 2:11 ` Martin K. Petersen [this message]
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=yq1r31i5evk.fsf@oracle.com \
--to=martin.petersen@oracle.com \
--cc=famz@redhat.com \
--cc=jejb@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.