linux-kernel - Re: [PATCH 3/4] mm: Defer flush of writable TLB entries

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Message-ID: <20150610075033.GB18049@gmail.com>
Date:	Wed, 10 Jun 2015 09:50:34 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Minchan Kim <minchan@...nel.org>,
	Dave Hansen <dave.hansen@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	H Peter Anvin <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] mm: Defer flush of writable TLB entries


* Mel Gorman <mgorman@...e.de> wrote:

> +
> +	/*
> +	 * If the PTE was dirty then it's best to assume it's writable. The
> +	 * caller must use try_to_unmap_flush_dirty() or try_to_unmap_flush()
> +	 * before the page any IO is initiated.
> +	 */

Speling nit: "before the page any IO is initiated" does not parse for me.

> +			/*
> +			 * Page is dirty. Flush the TLB if a writable entry
> +			 * potentially exists to avoid CPU writes after IO
> +			 * starts and then write it out here
> +			 */

s/here/here.

or:

s/here/here:

Thanks,

	Ingo
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