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From:   Florian Weimer <fweimer@redhat.com>
To:     David Howells <dhowells@redhat.com>
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Subject: Re: Add fchmodat2() - or add a more general syscall?
References: <cover.1689092120.git.legion@kernel.org>
        <cover.1689074739.git.legion@kernel.org>
        <104971.1690300714@warthog.procyon.org.uk>
Date:   Tue, 25 Jul 2023 18:10:22 +0200
In-Reply-To: <104971.1690300714@warthog.procyon.org.uk> (David Howells's
        message of "Tue, 25 Jul 2023 16:58:34 +0100")
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* David Howells:

> Rather than adding a fchmodat2() syscall, should we add a "set_file_attrs()"
> syscall that takes a mask and allows you to set a bunch of stuff all in one
> go?  Basically, an interface to notify_change() in the kernel that would allow
> several stats to be set atomically.  This might be of particular interest to
> network filesystems.

Do you mean atomically as in compare-and-swap (update only if old values
match), or just a way to update multiple file attributes with a single
system call?

Thanks,
Florian