linux-kernel - Re: [PATCH v2 04/26] mm: allow VM_FAULT

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Message-ID: <20190213033444.GD11247@xz-x1>
Date:   Wed, 13 Feb 2019 11:34:44 +0800
From:   Peter Xu <peterx@...hat.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     David Hildenbrand <david@...hat.com>,
        Hugh Dickins <hughd@...gle.com>,
        Maya Gokhale <gokhale2@...l.gov>,
        Jerome Glisse <jglisse@...hat.com>,
        Pavel Emelyanov <xemul@...tuozzo.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Martin Cracauer <cracauer@...s.org>, Shaohua Li <shli@...com>,
        Marty McFadden <mcfadden8@...l.gov>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Denis Plotnikov <dplotnikov@...tuozzo.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Mel Gorman <mgorman@...e.de>,
        "Kirill A . Shutemov" <kirill@...temov.name>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>
Subject: Re: [PATCH v2 04/26] mm: allow VM_FAULT_RETRY for multiple times

On Tue, Feb 12, 2019 at 10:56:10AM +0800, Peter Xu wrote:

[...]

> @@ -1351,7 +1351,7 @@ EXPORT_SYMBOL_GPL(__lock_page_killable);
>  int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
>  			 unsigned int flags)
>  {
> -	if (flags & FAULT_FLAG_ALLOW_RETRY) {
> +	if (!flags & FAULT_FLAG_TRIED) {

Sorry, this should be:

        if (!(flags & FAULT_FLAG_TRIED))

It escaped from tests, but I spotted it when I compile the tree on
another host.

-- 
Peter Xu