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Date: Thu, 6 Dec 2018 12:11:33 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Rafael David Tinoco <rafael.tinoco@linaro.org>
Cc: stable@vger.kernel.org, kirill.shutemov@linux.intel.com,
        wei.guo.simon@gmail.com, akpm@linux-foundation.org
Subject: Re: stable request: mm: mlock: avoid increase mm->locked_vm on
 mlock() when already mlock2(,MLOCK_ONFAULT)
Message-ID: <20181206111133.GO19891@kroah.com>
References: <CABdQkv_qGi7x4mQjH_mwGGnJs9F85CETOv9HLv=xvQVSPL_N3Q@mail.gmail.com>
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On Thu, Nov 08, 2018 at 08:07:35AM -0200, Rafael David Tinoco wrote:
> Hello Greg,
> 
> Could you please consider backporting to v4.4 the following commit:
> 
> commit b5b5b6fe643391209b08528bef410e0cf299b826
> Author: Simon Guo <wei.guo.simon@gmail.com>
> Date:   Fri Oct 7 20:59:40 2016

Where did you get that git commit id?

It's b155b4fde5bdde9fed439cd1f5ea07173df2ed31 in Linus's tree.
Something went really odd on your side here :(

> 
>     mm: mlock: avoid increase mm->locked_vm on mlock() when already
> mlock2(,MLOCK_ONFAULT)
> 
> It seems to be a trivial fix for:
> 
> https://bugs.linaro.org/show_bug.cgi?id=4043
> (mlock203.c LTP test failing on v4.4)

I've queued this up now, thanks for letting me know.

greg k-h