From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Igor Pylypiv <ipylypiv@google.com>
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] scsi: pm8001: Increase request sg length to support 4MiB requests
Date: Sat, 02 Nov 2024 20:22:24 -0400 [thread overview]
Message-ID: <yq1plnd88ut.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20241025185009.3278297-1-ipylypiv@google.com> (Igor Pylypiv's message of "Fri, 25 Oct 2024 18:50:09 +0000")
Igor,
> Increasing the per-request size maximum to 4MiB (8192 sectors x 512
> bytes) runs into the per-device DMA scatter gather list limit
> (max_segments) for users of the io vector system calls (e.g. readv and
> writev).
>
> This change increases the max scatter gather list length to 1024 to
> enable kernel to send 4MiB (1024 * 4KiB page size) requests.
Applied to 6.13/scsi-staging, thanks!
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2024-11-03 0:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-25 18:50 [PATCH v2] scsi: pm8001: Increase request sg length to support 4MiB requests Igor Pylypiv
2024-11-03 0:22 ` Martin K. Petersen [this message]
2024-11-14 2:49 ` 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=yq1plnd88ut.fsf@ca-mkp.ca.oracle.com \
--to=martin.petersen@oracle.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=ipylypiv@google.com \
--cc=jinpu.wang@cloud.ionos.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.