From: Ralf Baechle <ralf@uni-koblenz.de>
To: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Cc: "David S. Miller" <davem@redhat.com>,
Richard.Zidlicky@stud.informatik.uni-erlangen.de,
thunder7@xs4all.nl, parisc-linux@lists.parisc-linux.org,
linux-kernel@vger.kernel.org
Subject: Re: [SOLVED + PATCH]: documented Oops running big-endian reiserfs on parisc architecture
Date: Mon, 3 Sep 2001 15:14:21 +0200 [thread overview]
Message-ID: <20010903151421.A3078@dea.linux-mips.net> (raw)
In-Reply-To: <OF9A995335.07A81CF5-ONC1256ABC.00422A7B@de.ibm.com>
In-Reply-To: <OF9A995335.07A81CF5-ONC1256ABC.00422A7B@de.ibm.com>; from Ulrich.Weigand@de.ibm.com on Mon, Sep 03, 2001 at 02:08:43PM +0200
On Mon, Sep 03, 2001 at 02:08:43PM +0200, Ulrich Weigand wrote:
> >From what I recall when we were looking into reiserfs on S/390,
> the core problem was that reiserfs tried to do *atomic* operations
> on non-aligned words. This isn't supported by the hardware on
> S/390 (normal non-aligned accesses just work).
>
> I don't really see how this can be fixed in a trap handler; how
> would the handler guarantee atomicity?
Spinlocks. Now that'd so infinitly ugly that I'd rather fix Reiserfs.
It's another proof that reiserfs design was done without too much
consideration of portability so I speculate we'll continue to see such
bugs.
Ralf
next prev parent reply other threads:[~2001-09-03 18:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-03 12:08 [SOLVED + PATCH]: documented Oops running big-endian reiserfs on parisc architecture Ulrich Weigand
2001-09-03 13:14 ` Ralf Baechle [this message]
2001-09-03 22:24 ` David S. Miller
2001-09-08 1:41 ` Linus Torvalds
-- strict thread matches above, loose matches on Subject: below --
2001-09-04 22:55 Ulrich Weigand
2001-09-04 17:04 Ulrich Weigand
2001-09-04 14:34 Ulrich Weigand
2001-09-04 15:02 ` Richard B. Johnson
2001-09-04 16:09 ` John Alvord
[not found] <20010902105538.A15344@middle.of.nowhere.suse.lists.linux.kernel>
[not found] ` <20010902150023.U5126@parcelfarce.linux.theplanet.co.uk.suse.lists.linux.kernel>
[not found] ` <20010902195717.A21209@middle.of.nowhere.suse.lists.linux.kernel>
[not found] ` <20010903003437.A385@linux-m68k.org.suse.lists.linux.kernel>
[not found] ` <20010903213835.A13887@fury.csh.rit.edu.suse.lists.linux.kernel>
2001-09-04 9:44 ` Andi Kleen
2001-09-04 10:04 ` David S. Miller
2001-09-04 10:25 ` Andi Kleen
2001-09-04 10:29 ` David S. Miller
2001-09-04 12:50 ` Jeff Mahoney
2001-09-02 8:55 thunder7
2001-09-02 14:00 ` [parisc-linux] " Matthew Wilcox
2001-09-02 17:57 ` [SOLVED + PATCH]: " thunder7
2001-09-02 22:34 ` Richard Zidlicky
2001-09-02 23:08 ` David S. Miller
2001-09-04 1:38 ` Jeff Mahoney
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