linux-kernel - Re: [PATCH 1/2] fs/kernel_read_file: add support for duplicate detection

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Message-ID: <CAHk-=wi9oPrxcMK469X0zAueKQ4tqX80SdFqCx9StcL82vuEkw@mail.gmail.com>
Date:   Wed, 24 May 2023 14:56:47 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     david@...hat.com, tglx@...utronix.de, hch@....de,
        patches@...ts.linux.dev, linux-modules@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org, pmladek@...e.com,
        petr.pavlu@...e.com, prarit@...hat.com, lennart@...ttering.net,
        gregkh@...uxfoundation.org, rafael@...nel.org, song@...nel.org,
        lucas.de.marchi@...il.com, lucas.demarchi@...el.com,
        christophe.leroy@...roup.eu, peterz@...radead.org, rppt@...nel.org,
        dave@...olabs.net, willy@...radead.org, vbabka@...e.cz,
        mhocko@...e.com, dave.hansen@...ux.intel.com,
        colin.i.king@...il.com, jim.cromie@...il.com,
        catalin.marinas@....com, jbaron@...mai.com,
        rick.p.edgecombe@...el.com, yujie.liu@...el.com
Subject: Re: [PATCH 1/2] fs/kernel_read_file: add support for duplicate detection

On Wed, May 24, 2023 at 2:52 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> Stop adding horrific code for some made-up load that isn't real.

Even if you trigger some "worst case 3x memory use", that is
_temporary_, and will be free'd in the end.

The patches to "fix" this are worse than the disease.

                  Linus