linux-kernel - Re: [PATCH v5 2/2] tmpfs: Support 64-bit inums per-sb

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Date:   Sun, 12 Jan 2020 22:58:52 -0800 (PST)
From:   Hugh Dickins <hughd@...gle.com>
To:     Mikael Magnusson <mikachu@...il.com>
cc:     david@...morbit.com, akpm@...ux-foundation.org, amir73il@...il.com,
        chris@...isdown.name, hannes@...xchg.org, hughd@...gle.com,
        jlayton@...nel.org, kernel-team@...com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, tj@...nel.org, viro@...iv.linux.org
Subject: Re: [PATCH v5 2/2] tmpfs: Support 64-bit inums per-sb

On Wed, 8 Jan 2020, Mikael Magnusson wrote:
> 
> It's unfortunately not true that everything handles this correctly.
> 32-bit binaries for games on Steam that use stat() without the 64 is
> so prevalent that I got tired of adding the LD_PRELOAD wrapper script
> and just patched out the EOVERFLOW return from glibc instead. (They
> obviously don't care about the inode value at all, and I don't use any
> other 32-bit binaries that do). This is probably a class of binaries
> you don't care very much about, and not very likely to be installed on
> a tmpfs that has wrapped around, but I thought it was worth mentioning
> that they do exist anyway.

Thank you for alerting us to reality, Mikael: not what any of us wanted
to hear, but we do care about them, and it was well worth mentioning.

Hugh