From: Keith Busch <kbusch@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Christoph Hellwig <hch@infradead.org>,
Keith Busch <kbusch@meta.com>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
axboe@kernel.dk, iommu@lists.linux.dev
Subject: Re: [PATCHv3 1/2] block: accumulate segment page gaps per bio
Date: Fri, 29 Aug 2025 19:47:40 -0600 [thread overview]
Message-ID: <aLJYPGKE4Y_6QzY2@kbusch-mbp> (raw)
In-Reply-To: <20250827073709.GA25032@lst.de>
On Wed, Aug 27, 2025 at 09:37:09AM +0200, Christoph Hellwig wrote:
> On Tue, Aug 26, 2025 at 04:33:15PM -0600, Keith Busch wrote:
> > virt boundary check. It's looking like replace bvec's "page + offset"
> > with phys addrs, yeah?!
>
> Basically everything should be using physical address. The page + offset
> is just a weird and inefficient way to represent that and we really
> need to get rid of it.
I was plowing ahead with converting to phys addrs only to discover
skb_frag_t overlays a bvec with tightly coupled expectations on its
layout. I'm not comfortable right now messing with that type. I think it
may need to be decoupled to proceed on this path. :(
next prev parent reply other threads:[~2025-08-30 1:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-21 20:44 [PATCHv3 0/2] block+nvme: reducing virtual boundary mask reliance Keith Busch
2025-08-21 20:44 ` [PATCHv3 1/2] block: accumulate segment page gaps per bio Keith Busch
2025-08-25 13:46 ` Christoph Hellwig
2025-08-25 14:10 ` Keith Busch
2025-08-26 13:03 ` Christoph Hellwig
2025-08-26 13:47 ` Keith Busch
2025-08-26 13:57 ` Christoph Hellwig
2025-08-26 22:33 ` Keith Busch
2025-08-27 7:37 ` Christoph Hellwig
2025-08-30 1:47 ` Keith Busch [this message]
2025-09-02 5:36 ` Christoph Hellwig
2025-08-21 20:44 ` [PATCHv3 2/2] nvme: remove virtual boundary for sgl capable devices Keith Busch
2025-08-25 13:49 ` Christoph Hellwig
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=aLJYPGKE4Y_6QzY2@kbusch-mbp \
--to=kbusch@kernel.org \
--cc=axboe@kernel.dk \
--cc=hch@infradead.org \
--cc=hch@lst.de \
--cc=iommu@lists.linux.dev \
--cc=kbusch@meta.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-nvme@lists.infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).