linux-kernel - Re: [PATCHv4 34/39] thp, mm: handle huge pages in filemap

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Message-ID: <CAJd=RBDChGT0i_fsnqW7RvQkJhQaTv7k+=HNTzjx7Rg+6uTNPA@mail.gmail.com>
Date:	Wed, 22 May 2013 19:37:22 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>,
	Wu Fengguang <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>,
	Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org,
	Andi Kleen <ak@...ux.intel.com>,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Dave Hansen <dave@...1.net>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv4 34/39] thp, mm: handle huge pages in filemap_fault()

On Sun, May 12, 2013 at 9:23 AM, Kirill A. Shutemov
<kirill.shutemov@...ux.intel.com> wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
>
> If caller asks for huge page (flags & FAULT_FLAG_TRANSHUGE),
> filemap_fault() return it if there's a huge page already by the offset.
>
> If the area of page cache required to create huge is empty, we create a
> new huge page and return it.
>
> Otherwise we return VM_FAULT_FALLBACK to indicate that fallback to small
> pages is required.
>
s/small/regular/g ?
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