Date: Fri, 26 Dec 2014 15:10:55 -0600
From: Felipe Balbi <balbi@ti.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
CC: <akpm@linux-foundation.org>, <peterz@infradead.org>, <mingo@kernel.org>,
        <davej@redhat.com>, <sasha.levin@oracle.com>, <hughd@google.com>,
        <linux-mm@kvack.org>, <linux-arch@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/38] mm: remove non-linear mess
Message-ID: <20141226211055.GM17430@saruman>
Reply-To: <balbi@ti.com>
References: <1419423766-114457-1-git-send-email-kirill.shutemov@linux.intel.com>
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On Wed, Dec 24, 2014 at 02:22:08PM +0200, Kirill A. Shutemov wrote:
> We have remap_file_pages(2) emulation in -mm tree for few release cycles
> and we plan to have it mainline in v3.20. This patchset removes rest of
> VM_NONLINEAR infrastructure.
>=20
> Patches 1-8 take care about generic code. They are pretty
> straight-forward and can be applied without other of patches.
>=20
> Rest patches removes pte_file()-related stuff from architecture-specific
> code. It usually frees up one bit in non-present pte. I've tried to reuse
> that bit for swap offset, where I was able to figure out how to do that.
>=20
> For obvious reason I cannot test all that arch-specific code and would
> like to see acks from maintainers.
>=20
> In total, remap_file_pages(2) required about 1.4K lines of not-so-trivial
> kernel code. That's too much for functionality nobody uses.
>=20
> git://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git remap_file_pa=
ges

have been running this for a while on a three different ARM boards I
have around, haven't noticed anything wrong.

Tested-by: Felipe Balbi <balbi@ti.com>

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balbi

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