From: "David S. Miller" <davem@redhat.com>
To: kanoj@google.engr.sgi.com
Cc: manfreds@colorfullife.com, linux-kernel@vger.rutgers.edu,
linux-mm@kvack.org
Subject: Re: zap_page_range(): TLB flush race
Date: Sat, 8 Apr 2000 16:44:14 -0700 [thread overview]
Message-ID: <200004082344.QAA02536@pizda.ninka.net> (raw)
In-Reply-To: <200004082111.OAA73647@google.engr.sgi.com> (kanoj@google.engr.sgi.com)
> filemap_sync() calls flush_tlb_page() for each page, but IMHO this is a
> really bad idea, the performance will suck with multi-threaded apps on
> SMP.
The best you can do probably is a flush_tlb_range?
People, look at the callers of filemap_sync, it does range tlb/cache
flushes so the flushes in filemap_sync_pte() are in fact spurious.
Later,
David S. Miller
davem@redhat.com
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next prev parent reply other threads:[~2000-04-08 23:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-04-08 20:06 Manfred Spraul
2000-04-08 21:11 ` Kanoj Sarcar
2000-04-08 22:46 ` Manfred Spraul
2000-04-08 23:31 ` Kanoj Sarcar
2000-04-08 23:37 ` Alan Cox
2000-04-08 23:54 ` Kanoj Sarcar
2000-04-09 9:10 ` Manfred Spraul
2000-04-09 9:19 ` David S. Miller
2000-04-10 22:21 ` Stephen C. Tweedie
2000-04-10 23:12 ` David S. Miller
2000-04-11 9:14 ` Stephen C. Tweedie
2000-04-11 14:41 ` Manfred Spraul
2000-04-11 16:40 ` Andrea Arcangeli
2000-04-11 17:45 ` Manfred Spraul
2000-04-11 18:14 ` Kanoj Sarcar
2000-04-12 10:02 ` Jamie Lokier
2000-04-11 11:56 ` Alan Cox
2000-04-08 23:44 ` David S. Miller [this message]
2000-04-09 0:20 ` Kanoj Sarcar
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