linux-kernel - Re: [PATCH RFC 2/2] mm: Use pte markers for swap errors

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Message-ID: <Y1gEapirqtJACeK/@x1n>
Date:   Tue, 25 Oct 2022 11:44:42 -0400
From:   Peter Xu <peterx@...hat.com>
To:     David Hildenbrand <david@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Huang Ying <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        HORIGUCHI NAOYA <naoya.horiguchi@....com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH RFC 2/2] mm: Use pte markers for swap errors

On Tue, Oct 25, 2022 at 05:31:43PM +0200, David Hildenbrand wrote:
> > -#define  PTE_MARKER_UFFD_WP  BIT(0)
> > -#define  PTE_MARKER_MASK     (PTE_MARKER_UFFD_WP)
> > +#define  PTE_MARKER_UFFD_WP			BIT(0)
> > +#define  PTE_MARKER_SWAP_ERROR			BIT(1)
> 
> I'd suggest to keep the term SWAPIN. An error happened during swapin, which
> is why the page is corrupted.

Sure thing.

-- 
Peter Xu