Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range

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To: wangtao <tao.wangtao@xxxxxxxxx>
Subject: Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sun, 15 Jun 2025 22:24:08 -0700
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Christian König <christian.koenig@xxxxxxx>, "sumit.semwal@xxxxxxxxxx" <sumit.semwal@xxxxxxxxxx>, "kraxel@xxxxxxxxxx" <kraxel@xxxxxxxxxx>, "vivek.kasireddy@xxxxxxxxx" <vivek.kasireddy@xxxxxxxxx>, "viro@xxxxxxxxxxxxxxxxxx" <viro@xxxxxxxxxxxxxxxxxx>, "brauner@xxxxxxxxxx" <brauner@xxxxxxxxxx>, "hughd@xxxxxxxxxx" <hughd@xxxxxxxxxx>, "akpm@xxxxxxxxxxxxxxxxxxxx" <akpm@xxxxxxxxxxxxxxxxxxxx>, "amir73il@xxxxxxxxx" <amir73il@xxxxxxxxx>, "benjamin.gaignard@xxxxxxxxxxxxx" <benjamin.gaignard@xxxxxxxxxxxxx>, "Brian.Starkey@xxxxxxx" <Brian.Starkey@xxxxxxx>, "jstultz@xxxxxxxxxx" <jstultz@xxxxxxxxxx>, "tjmercier@xxxxxxxxxx" <tjmercier@xxxxxxxxxx>, "jack@xxxxxxx" <jack@xxxxxxx>, "baolin.wang@xxxxxxxxxxxxxxxxx" <baolin.wang@xxxxxxxxxxxxxxxxx>, "linux-media@xxxxxxxxxxxxxxx" <linux-media@xxxxxxxxxxxxxxx>, "dri-devel@xxxxxxxxxxxxxxxxxxxxx" <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, "linaro-mm-sig@xxxxxxxxxxxxxxxx" <linaro-mm-sig@xxxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>, "wangbintian(BintianWang)" <bintian.wang@xxxxxxxxx>, yipengxiang <yipengxiang@xxxxxxxxx>, liulu 00013167 <liulu.liu@xxxxxxxxx>, hanfeng 00012985 <feng.han@xxxxxxxxx>
In-reply-to: <80ce3ec9104c4f0abbcb589b03a5f3c7@honor.com>

On Fri, Jun 13, 2025 at 09:43:08AM +0000, wangtao wrote:
> Here's my analysis on Linux 6.6 with F2FS/iomap.

Linux 6.6 is almost two years old and completely irrelevant.  Please
provide numbers on 6.16 or current Linus' tree.

References:
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christoph Hellwig
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christian König
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christoph Hellwig
- RE: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: wangtao
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christian König
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christoph Hellwig
- RE: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: wangtao
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christian König
- Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: Christoph Hellwig
- RE: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range
  - From: wangtao

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