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Message-ID: <20170209201909.GU2267@bombadil.infradead.org>
Date: Thu, 9 Feb 2017 12:19:09 -0800
From: Matthew Wilcox <willy@...radead.org>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Theodore Ts'o <tytso@....edu>,
Andreas Dilger <adilger.kernel@...ger.ca>,
Jan Kara <jack@...e.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Hugh Dickins <hughd@...gle.com>,
Andrea Arcangeli <aarcange@...hat.com>,
Dave Hansen <dave.hansen@...el.com>,
Vlastimil Babka <vbabka@...e.cz>,
Ross Zwisler <ross.zwisler@...ux.intel.com>,
linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-block@...r.kernel.org
Subject: Re: [PATCHv6 06/37] thp: handle write-protection faults for file THP
On Thu, Jan 26, 2017 at 02:57:48PM +0300, Kirill A. Shutemov wrote:
> For filesystems that wants to be write-notified (has mkwrite), we will
> encount write-protection faults for huge PMDs in shared mappings.
>
> The easiest way to handle them is to clear the PMD and let it refault as
> wriable.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Reviewed-by: Jan Kara <jack@...e.cz>
Reviewed-by: Matthew Wilcox <mawilcox@...rosoft.com>
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