From: "David S. Miller" <davem@redhat.com>
To: zippel@linux-m68k.org
Cc: mika.penttila@kolumbus.fi, rmk@arm.linux.org.uk, akpm@digeo.com,
hugh@veritas.com, LW@karo-electronics.de,
linux-kernel@vger.kernel.org
Subject: Re: [patch] cache flush bug in mm/filemap.c (all kernels >= 2.5.30(at least))
Date: Wed, 28 May 2003 18:37:00 -0700 (PDT) [thread overview]
Message-ID: <20030528.183700.104033543.davem@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0305290151470.5042-100000@serv>
From: Roman Zippel <zippel@linux-m68k.org>
Date: Thu, 29 May 2003 02:12:47 +0200 (CEST)
BTW it's a bit unfortunate that flush_dcache_page() is called for reads
and writes.
Please don't say it this way, this is an inaccurate description.
DMA-mapping.txt defines very precisely when flush_dcache_page() is
invoked, and that is it's only definition. I purposely DO NOT say
that "this is for reads" or "this is for handling virtual aliasing
in L1 caches", I simply define where this macro is invoked and
that is it.
Specifically, flush_dcache_page() is called any time the kernel makes
cpu stores into a page cache page that might be mapped into a user's
address space.
next prev parent reply other threads:[~2003-05-29 1:24 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-22 12:34 [patch] cache flush bug in mm/filemap.c (all kernels >= 2.5.30(at least)) LW
2003-05-22 14:03 ` Russell King
2003-05-22 14:11 ` Russell King
2003-05-23 8:02 ` David S. Miller
2003-05-23 9:12 ` Andrew Morton
2003-05-23 9:49 ` David S. Miller
2003-05-23 10:04 ` Andrew Morton
2003-05-23 10:15 ` David S. Miller
2003-05-23 8:20 ` Lothar Wassmann
2003-05-23 9:24 ` Andrew Morton
2003-05-23 10:04 ` Lothar Wassmann
2003-05-23 10:45 ` Andrew Morton
2003-05-23 11:22 ` Paul Mackerras
2003-05-23 16:54 ` Russell King
2003-05-23 17:31 ` Hugh Dickins
2003-05-23 18:29 ` Andrew Morton
2003-05-23 18:34 ` Russell King
2003-05-26 3:19 ` David S. Miller
2003-05-26 5:07 ` Mika Penttilä
2003-05-26 5:08 ` David S. Miller
2003-05-26 5:36 ` Mika Penttilä
2003-05-26 5:36 ` David S. Miller
2003-05-26 13:18 ` Roman Zippel
2003-05-26 22:34 ` David S. Miller
2003-05-27 10:53 ` Roman Zippel
2003-05-27 21:22 ` David S. Miller
2003-05-28 16:35 ` Roman Zippel
2003-05-28 22:47 ` David S. Miller
2003-05-29 0:12 ` Roman Zippel
2003-05-29 1:37 ` David S. Miller [this message]
2003-05-29 7:13 ` Russell King
2003-05-29 7:15 ` David S. Miller
2003-05-29 17:49 ` Roman Zippel
2003-05-29 21:09 ` David S. Miller
2003-05-26 8:55 ` Russell King
2003-05-26 13:08 ` Lothar Wassmann
2003-05-26 22:19 ` Russell King
2003-05-26 13:25 ` Jens Axboe
2003-05-26 22:35 ` David S. Miller
2003-05-26 3:20 ` David S. Miller
2003-05-23 11:13 ` Russell King
2003-05-23 12:46 ` Lothar Wassmann
2003-05-23 15:42 ` Hugh Dickins
2003-05-25 17:10 ` David Woodhouse
2003-05-26 11:44 ` Lothar Wassmann
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