linux-kernel - Re: [resend][PATCH] mm, vmscan: fix do_try_to_free

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Message-ID: <4FE0EC86.706@gmail.com>
Date:	Tue, 19 Jun 2012 17:17:58 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Hillf Danton <dhillf@...il.com>
CC:	Minchan Kim <minchan@...nel.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org, Nick Piggin <npiggin@...il.com>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	Mel Gorman <mel@....ul.ie>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [resend][PATCH] mm, vmscan: fix do_try_to_free_pages() livelock

> Who left comment on unreclaimable there, and why?
> 		/*
> 		 * balance_pgdat() skips over all_unreclaimable after
> 		 * DEF_PRIORITY. Effectively, it considers them balanced so
> 		 * they must be considered balanced here as well if kswapd
> 		 * is to sleep
> 		 */

Thank you for finding this! I'll fix.



> BTW, are you still using prefetch_prev_lru_page?

No. we should kill it. ;-)

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