Re: [PATCH] MAINTAINERS: add RELAY entry

[Jason Xing]

On Mon, Mar 2, 2026 at 4:40 PM Jason Xing <kerneljasonxing@xxxxxxxxx> wrote:
>
> Hi Andy,
>
> On Mon, Mar 2, 2026 at 4:35 PM Andy Shevchenko
> <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> >
> > On Sun, Mar 01, 2026 at 10:09:02AM +0800, Jason Xing wrote:
> >
> > > RELAYFS was originally developed by Tom Zanussi and Karim
> > > Yaghmour in 2005[1]. Jens Axboe converted it from filesystem
> > > into a generic API in 2006[2] and made it widely known through
> > > the notable I/O tracing tool blktrace. In the decade, there remain
> > > a few users scatterred across different subsystems, like recently
> > > added wifi commit[3] that is an example to show how to communicate
> > > between users and kernel. Last year I've already done some
> > > maintenance and added/corrected some diagnostic counters.
> > >
> > > At Tencent, we internally maintain RELAY as one of most crucial
> > > components of network observibility platform which was shared a
> > > bit at LPC 2025[4][5] and hopefully will be published in the paper
> > > this year. RELAY has proven highly efficient due to its inherent
> > > design essence. This design becomes the indispensable way to build
> > > a 7x24 platform monitoring various hot paths even without any
> > > selectively sampling (yes, sampling is commonly used to avoid the
> > > overall performance degradation). One of the recommended usages is
> > > use its zerocopy function relay_reserve() to transfer data in a
> > > raw format that can be recognized and parsed by the corresponding
> > > application to userspace without introducing heavy locks and
> > > complicated logic that appears in other types of approaches, like
> > > printk. More details can be discovered by reading through the
> > > Documentation :)
> > >
> > > Credits are given to the all the contributors and reviewers for
> > > RELAY/RELAYFS in the past and future! Many thanks!
> > >
> > > [1]: commit e82894f84dbb ("[PATCH] relayfs")
> > > [2]: commit b86ff981a825 ("[PATCH] relay: migrate from relayfs to
> > > a generic relay API")
> >
> > It's better to read as a single line here
> >
> > [2]: commit b86ff981a825 ("[PATCH] relay: migrate from relayfs to > a generic relay API")
> >
> > OR you can even have it as a proper Link tag:
> >
> > Link: https://git.kernel.org/torvalds/c/b86ff981a825 [2]
> >
> > Same for the rest.
>
> Thanks for the review.
>
> The fact is that originally I used a single line but checkpatch warned
> me because of exceeding 75 chars. The current format is just to split
> it into two lines as script requested.

Oh interesting thing is Andrew already kindly revised the patch just
like you said:
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-hotfixes-unstable&id=46947075c75b9b213ba31c1af8c45e0a9c85bf74

So I think there is no need to repost it :)

Thank you!