linux-kernel - Re: [RFC] metadata updates vs. fetches (was Re: [PATCH v4] fs: Fix data race in inode_set_ctime_to

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Message-ID: <CAHk-=wh0GvCCyuK7hG9MkXPrDTSPU1qFaQZm5GVL=Tc0BzN49w@mail.gmail.com>
Date: Sun, 24 Nov 2024 14:40:20 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: Mateusz Guzik <mjguzik@...il.com>, "Darrick J. Wong" <djwong@...nel.org>, 
	Hao-ran Zheng <zhenghaoran@...a.edu.cn>, brauner@...nel.org, jack@...e.cz, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	baijiaju1990@...il.com, 21371365@...a.edu.cn
Subject: Re: [RFC] metadata updates vs. fetches (was Re: [PATCH v4] fs: Fix
 data race in inode_set_ctime_to_ts)

On Sun, 24 Nov 2024 at 14:24, Al Viro <viro@...iv.linux.org.uk> wrote:
>
> On Sun, Nov 24, 2024 at 02:10:30PM -0800, Linus Torvalds wrote:
>
> > I *do* think that we could perhaps extend (and rename) the
> > inode->i_size_seqcount to just cover all of the core inode metadata
> > stuff.
>
> That would bring ->i_size_seqcount to 64bit architectures and
> potentially extend the time it's being held quite a bit even
> on 32bit...

Yes. But it seems fairly benign.

*IF* somebody really cares, that is.

         Linus