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From: Manfred Spraul <manfred@colorfullife.com>
To: Andrew Morton <andrewm@uow.edu.au>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: sys_exit() and zap_page_range()
Date: Fri, 07 Jul 2000 18:42:36 +0200	[thread overview]
Message-ID: <3966087C.D4D9E74E@colorfullife.com> (raw)
In-Reply-To: 3965EC8E.5950B758@uow.edu.au

Andrew Morton wrote:
> 
> Can anyone suggest a simple, clean way of decreasing zap_page_range's
> scheduling latency, in a way which you're prepared to support?
> 
Btw, zap_page_range() contains a huge TLB flush race: the freed pages
become available immediately to other processes, but stale tlb entries
are only flushed when zap_page_range() returns [check madvise_dontneed,
and several other functions]

A proper fix would be a major change, probably along Kanoj's proposal
(pte_freeze_range).

--
	Manfred
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  reply	other threads:[~2000-07-07 16:42 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-07-07 14:43 sys_exit() and zap_page_range() Andrew Morton
2000-07-07 16:42 ` Manfred Spraul [this message]
2000-07-09 17:30 ` Philipp Rumpf
2000-07-09 17:42   ` Arjan van de Ven
2000-07-09 23:54   ` Andrew Morton
2000-07-10  9:53     ` Philipp Rumpf
2000-07-10 15:36       ` Andrew Morton
2000-07-10 17:34         ` Philipp Rumpf
2000-07-11  8:39 ` Stephen C. Tweedie
2000-07-11 11:24   ` Andrew Morton
2000-07-11 13:35     ` Stephen C. Tweedie
2000-07-11 15:23       ` Richard Guenther

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