mm-commits Archive on lore.kernel.org
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From: Arnd Bergmann <arnd@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Heiko Carstens <hca@linux.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Amir Goldstein <amir73il@gmail.com>,
	Chris Down <chris@chrisdown.name>,
	Hugh Dickins <hughd@google.com>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Linux-MM <linux-mm@kvack.org>, Matt Turner <mattst88@gmail.com>,
	mm-commits@vger.kernel.org, Richard Henderson <rth@twiddle.net>,
	Seth Forshee <seth.forshee@canonical.com>,
	stable <stable@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
	Tuan Hoang1 <Tuan.Hoang1@ibm.com>,
	Debian <debian-kernel@lists.debian.org>
Subject: Re: [patch 09/14] tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha
Date: Wed, 10 Feb 2021 20:55:30 +0100
Message-ID: <CAK8P3a3P6tMpVaLJHwNbp8sEj9+XVh5j4ymNAiXjF6P=noxL-g@mail.gmail.com> (raw)
In-Reply-To: <CAHk-=wghVA-6aNQz3rwr5VHmJAHkUvGyzKFpsEN1HPB5SL+aQA@mail.gmail.com>

On Wed, Feb 10, 2021 at 8:17 PM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> On Wed, Feb 10, 2021 at 5:39 AM Heiko Carstens <hca@linux.ibm.com> wrote:
> >
> > I couldn't spot any and also gave the patch below a try and my system
> > still boots without any errors.
> > So, as far as I can tell it _should_ be ok to change this.
>
> So your patch (with the fix on top) looks sane to me.
>
> I'm not entirely sure it is worth it, but the fact that we've had bugs
> wrt this before does seem to imply that we should do this.
>
> I'd remove the __kernel_ino_t type entirely, but I wonder if user
> space might depend on it. I do find
>
>    #ifndef __kernel_ino_t
>    typedef __kernel_ulong_t __kernel_ino_t;
>    #endif
>
> in the GNU libc headers I have, but then I don't find any actual use
> of that, so it looks like it may be jyst a "we copied things for other
> reasons".

I checked debian codesearch to see if there are any users in
distro source code and found exactly one instance that will
definitely break at compile time:

https://sources.debian.org/src/nfs-utils/1:1.3.4-4/support/include/nfs/nfs.h/?hl=99#L99

This is a copy of a kernel header that was removed ten years ago
with commit c152292f9ee7 ("nfsd: remove include/linux/nfsd/syscall.h").

The mainline version of that package removed the contents in 2016 in
the following release (2.1.1), but debian is still on the previous
version (1.3.4)
http://git.linux-nfs.org/?p=steved/nfs-utils.git;a=commitdiff;h=fc1127d754578cd1

Someone will have to update the package for Debian, but it seems
that would be a good idea anyway.

      Arnd

  reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-09 21:41 incoming Andrew Morton
2021-02-09 21:41 ` [patch 01/14] squashfs: avoid out of bounds writes in decompressors Andrew Morton
2021-02-09 21:41 ` [patch 02/14] squashfs: add more sanity checks in id lookup Andrew Morton
2021-02-09 21:41 ` [patch 03/14] squashfs: add more sanity checks in inode lookup Andrew Morton
2021-02-09 21:42 ` [patch 04/14] squashfs: add more sanity checks in xattr id lookup Andrew Morton
2021-02-09 21:42 ` [patch 05/14] kasan: fix stack traces dependency for HW_TAGS Andrew Morton
2021-02-09 21:42 ` [patch 06/14] firmware_loader: align .builtin_fw to 8 Andrew Morton
2021-02-09 21:42 ` [patch 07/14] mm/mremap: fix BUILD_BUG_ON() error in get_extent Andrew Morton
2021-02-09 21:42 ` [patch 08/14] tmpfs: disallow CONFIG_TMPFS_INODE64 on s390 Andrew Morton
2021-02-09 21:42 ` [patch 09/14] tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha Andrew Morton
2021-02-09 22:03   ` Linus Torvalds
2021-02-10 13:34     ` Heiko Carstens
2021-02-10 17:27       ` Heiko Carstens
2021-02-10 19:17       ` Linus Torvalds
2021-02-10 19:55         ` Arnd Bergmann [this message]
2021-02-11 18:45         ` Heiko Carstens
2021-02-09 21:42 ` [patch 10/14] selftests/vm: rename file run_vmtests to run_vmtests.sh Andrew Morton
2021-02-09 21:42 ` [patch 11/14] MAINTAINERS: update Andrey Ryabinin's email address Andrew Morton
2021-02-09 21:42 ` [patch 12/14] Revert "mm: memcontrol: avoid workload stalls when lowering memory.high" Andrew Morton
2021-02-09 21:42 ` [patch 13/14] mm, slub: better heuristic for number of cpus when calculating slab order Andrew Morton
2021-02-10 14:34   ` Vlastimil Babka
2021-02-10 19:22     ` Linus Torvalds
2021-02-09 21:42 ` [patch 14/14] nilfs2: make splice write available again Andrew Morton
2021-02-10 19:30 ` incoming Linus Torvalds

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