linux-kernel - Re: [PATCH] mm/rmap/mmu_notifier: restore mmu_notifier_invalidate

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Message-ID: <20170809102743.onfujwpwuli6quc5@node.shutemov.name>
Date:   Wed, 9 Aug 2017 13:27:43 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     jglisse@...hat.com
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCH] mm/rmap/mmu_notifier: restore
 mmu_notifier_invalidate_page() semantic

On Tue, Aug 08, 2017 at 06:08:20PM -0400, jglisse@...hat.com wrote:
> From: Jérôme Glisse <jglisse@...hat.com>
> 
> Commit c7ab0d2fdc840266b39db94538f74207ec2afbf6 silently modified
> semantic of mmu_notifier_invalidate_page() this patch restore it
> to its previous semantic ie allowing to sleep inside invalidate_page()
> callback.
> 
> Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
> Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

The issue in page_mkclean_one() was addressed recently by this:

http://lkml.kernel.org/r/20170804134928.l4klfcnqatni7vsc@black.fi.intel.com

(I think mmu_notifier_invalidate_range() it better in the situation, right?)

But I've missed try_to_unmap_one(). Could you prepare patch for this one?

-- 
 Kirill A. Shutemov