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Date:   Fri, 8 Jan 2021 10:21:54 +0100
From:   Peter Zijlstra <>
To:     Arnd Bergmann <>
Cc:     Russell King - ARM Linux admin <>,
        Will Deacon <>,,
        Mark Rutland <>,
        Theodore Ts'o <>,
        "" <>,
        Andreas Dilger <>,
        Ext4 Developers List <>,
        Linux ARM <>,
        Linus Torvalds <>
Subject: Re: Aarch64 EXT4FS inode checksum failures - seems to be weak memory
 ordering issues

On Thu, Jan 07, 2021 at 10:20:38PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 7, 2021 at 2:37 PM Russell King - ARM Linux admin

> > So, do we raise the minimum gcc version for the kernel as a whole to 5.1
> > or just for aarch64?
> I'd personally love to see gcc-5 as the global minimum version, as that
> would let us finally use --std=gnu11 features instead of gnu89. [There are
> a couple of useful features that are incompatible with gnu89, and
> gnu99/gnu11 support in gcc didn't like the kernel sources]

+1 for raising the tree-wide minimum (again!). We actually have a bunch
of work-arounds for 4.9 bugs we can get rid of as well.

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