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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 13 Jul 2018 20:04:21 -0700
Message-ID: <CA+55aFy-WcfHqKvdj9N9w56dFXscB7ELNMD8BJbPzRfejzh82w@mail.gmail.com>
Subject: Re: Instability in current -git tree
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Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Matthew Wilcox <willy@infradead.org>, Ingo Molnar <mingo@redhat.com>, Jens Axboe <axboe@kernel.dk>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, David Miller <davem@davemloft.net>, Al Viro <viro@zeniv.linux.org.uk>, Dave Airlie <airlied@gmail.com>, Tejun Heo <tj@kernel.org>, Ted Ts'o <tytso@google.com>, Mike Snitzer <snitzer@redhat.com>, linux-mm <linux-mm@kvack.org>, Daniel Vacek <neelx@redhat.com>, Mel Gorman <mgorman@techsingularity.net>

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On Fri, Jul 13, 2018 at 7:40 PM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Should we perhaps just revert
>
>   124049decbb1 x86/e820: put !E820_TYPE_RAM regions into memblock.reserved
>   f7f99100d8d9 mm: stop zeroing memory during allocation in vmemmap
>
> it still reverts fairly cleanly (there's a trivial conflict with the
> older commit).

This is the revert I'm testing right now..  It seems to be stable for
me (doing that "limited memory, nasty memory hogs" test that I did
before), but I'll keep running this for a while. Even with the memory
limit and the memory hogs, it sometimes took some time to crash.

                  Linus

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