From: Manfred Spraul <manfred@colorfullife.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Jamie Lokier <lk@tantalophile.demon.co.uk>,
linux-kernel@vger.kernel.org, bcrl@redhat.com
Subject: Re: x86 ptep_get_and_clear question
Date: Fri, 16 Feb 2001 19:49:47 +0100 [thread overview]
Message-ID: <3A8D764B.9CD6B3A8@colorfullife.com> (raw)
In-Reply-To: <Pine.LNX.4.10.10102160931580.14020-100000@penguin.transmeta.com>
Linus wrote:
>
> >
> > That second pass is what I had in mind.
> >
> > > * munmap(file): No. Second pass required for correct msync behaviour.
> >
> > It is?
>
> Not now it isn't. We just do a msync() + fsync() for msync(MS_SYNC). Which
> is admittedly not optimal, but it works.
>
Ok, munmap() will be fixed by the tlb shootdown changes - it also uses
zap_page_range().
That leaves msync() - it currently does a flush_tlb_page() for every
single dirty page.
Is it possible to integrate that into the mmu gather code?
tlb_transfer_dirty() in addition to tlb_clear_page()?
--
Manfred
next prev parent reply other threads:[~2001-02-16 18:49 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20010215173547.A2079@pcep-jamie.cern.ch>
[not found] ` <200102151723.JAA43255@google.engr.sgi.com>
2001-02-15 17:47 ` Jamie Lokier
2001-02-15 18:05 ` Kanoj Sarcar
2001-02-15 18:23 ` Kanoj Sarcar
2001-02-15 18:42 ` Jamie Lokier
2001-02-15 18:57 ` Kanoj Sarcar
2001-02-15 19:06 ` Ben LaHaise
2001-02-15 19:19 ` Kanoj Sarcar
2001-02-15 20:16 ` Linus Torvalds
2001-02-15 18:51 ` Manfred Spraul
2001-02-15 19:05 ` Kanoj Sarcar
2001-02-15 19:19 ` Jamie Lokier
2001-02-15 20:31 ` Linus Torvalds
2001-02-15 21:26 ` Manfred Spraul
2001-02-15 21:29 ` Manfred Spraul
2001-02-16 1:21 ` Linus Torvalds
2001-02-16 14:18 ` Jamie Lokier
2001-02-16 14:59 ` Manfred Spraul
2001-02-16 15:27 ` Jamie Lokier
2001-02-16 15:54 ` Manfred Spraul
2001-02-16 16:00 ` Jamie Lokier
2001-02-16 16:23 ` Manfred Spraul
2001-02-16 16:43 ` Jamie Lokier
2001-02-16 17:12 ` Manfred Spraul
2001-02-16 17:20 ` Jamie Lokier
2001-02-16 17:36 ` Linus Torvalds
2001-02-16 18:49 ` Manfred Spraul [this message]
2001-02-16 19:00 ` Linus Torvalds
2001-02-16 19:02 ` Ben LaHaise
2001-02-16 19:32 ` Linus Torvalds
2001-02-16 19:42 ` Ben LaHaise
2001-02-16 17:37 ` Jamie Lokier
2001-02-16 18:04 ` Manfred Spraul
2001-02-16 18:09 ` Jamie Lokier
2001-02-16 18:36 ` Hugh Dickins
2001-02-16 17:29 ` Ben LaHaise
2001-02-16 17:38 ` Linus Torvalds
2001-02-16 17:44 ` Ben LaHaise
2001-02-16 17:59 ` Linus Torvalds
2001-02-15 23:57 ` Jamie Lokier
2001-02-16 0:55 ` Linus Torvalds
2001-02-15 19:07 ` Jamie Lokier
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