All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ming Lei <ming.lei@redhat.com>
To: Caleb Sander Mateos <csander@purestorage.com>
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ublk: update UBLK_F_SUPPORT_ZERO_COPY comment in UAPI header
Date: Mon, 23 Jun 2025 09:41:53 +0800	[thread overview]
Message-ID: <aFiw4eaajxKEOVa7@fedora> (raw)
In-Reply-To: <20250621171015.354932-1-csander@purestorage.com>

On Sat, Jun 21, 2025 at 11:10:14AM -0600, Caleb Sander Mateos wrote:
> UBLK_F_SUPPORT_ZERO_COPY has a very old comment describing the initial
> idea for how zero-copy would be implemented. The actual implementation
> added in commit 1f6540e2aabb ("ublk: zc register/unregister bvec") uses
> io_uring registered buffers rather than shared memory mapping.
> Remove the inaccurate remarks about mapping ublk request memory into the
> ublk server's address space and requiring 4K block size. Replace them
> with a description of the current zero-copy mechanism.
> 
> Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>

Reviewed-by: Ming Lei <ming.lei@redhat.com>

thanks,
Ming


  reply	other threads:[~2025-06-23  1:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-21 17:10 [PATCH] ublk: update UBLK_F_SUPPORT_ZERO_COPY comment in UAPI header Caleb Sander Mateos
2025-06-23  1:41 ` Ming Lei [this message]
2025-06-24 14:51 ` Jens Axboe

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=aFiw4eaajxKEOVa7@fedora \
    --to=ming.lei@redhat.com \
    --cc=csander@purestorage.com \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-kernel@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.