From: Andi Kleen <ak@muc.de>
To: Greg KH <greg@kroah.com>
Cc: linuxppc64-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org, Anton Blanchard <anton@samba.org>,
arnd@arndb.de, benh@crashing.org
Subject: Re: [PATCH 7/8] ppc64: SPU file system
Date: Sun, 15 May 2005 13:24:13 +0200 [thread overview]
Message-ID: <m1y8agag0y.fsf@muc.de> (raw)
In-Reply-To: <20050514074524.GC20021@kroah.com> (Greg KH's message of "Sat, 14 May 2005 00:45:25 -0700")
Greg KH <greg@kroah.com> writes:
>
> No, as Ben said, do not do this. Use write. And as you are only doing
> 1 type of ioctl, it shouldn't be an issue. Also it will be faster than
> the ioctl due to lack of BKL usage :)
The problem is that if something is wrong regarding 32bit/64bit
compatibility (I am not saying Arnd will get it wrong, but
for a general rule someone will get it wrong and it has happened, e.g.
in ubsfs) then it is impossible to do any compat emulation
on read/write.
So I would actually prefer ioctl because it is sfer.
-Andi
next prev parent reply other threads:[~2005-05-15 11:24 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-13 19:31 [PATCH 0/8] ppc64: Introduce Cell/BPA platform, v2 Arnd Bergmann
2005-05-13 19:21 ` [PATCH 1/8] ppc64: split out generic rtas code from pSeries_pci.c Arnd Bergmann
2005-05-13 19:23 ` [PATCH 2/8] ppc64: add a minimal nvram driver Arnd Bergmann
2005-05-13 19:24 ` [PATCH 3/8] ppc64: add a watchdog driver for rtas Arnd Bergmann
2005-05-17 20:40 ` Nathan Lynch
2005-05-18 7:14 ` Arnd Bergmann
2005-05-18 14:45 ` Nathan Lynch
2005-05-18 14:39 ` Arnd Bergmann
2005-05-13 19:25 ` [PATCH 4/8] ppc64: add BPA platform type Arnd Bergmann
2005-05-17 7:01 ` Paul Mackerras
2005-05-17 11:05 ` Arnd Bergmann
2005-05-13 19:26 ` [PATCH 5/8] ppc64: Add driver for BPA interrupt controllers Arnd Bergmann
2005-05-13 19:27 ` [PATCH 6/8] ppc64: Add driver for BPA iommu Arnd Bergmann
2005-05-13 19:29 ` [PATCH 7/8] ppc64: SPU file system Arnd Bergmann
2005-05-13 23:31 ` Benjamin Herrenschmidt
2005-05-15 9:07 ` Pavel Machek
2005-05-15 12:02 ` Benjamin Herrenschmidt
2005-05-15 12:33 ` Arnd Bergmann
2005-05-14 7:45 ` Greg KH
2005-05-14 13:05 ` Arnd Bergmann
2005-05-15 6:29 ` Benjamin Herrenschmidt
2005-05-15 10:08 ` Arnd Bergmann
2005-05-15 11:50 ` Arnd Bergmann
2005-05-16 20:58 ` Greg KH
2005-05-16 22:01 ` Arnd Bergmann
2005-05-16 22:27 ` Greg KH
2005-05-16 22:22 ` Arnd Bergmann
2005-05-16 22:49 ` Greg KH
2005-05-15 11:24 ` Andi Kleen [this message]
2005-05-16 20:14 ` Roland Dreier
2005-05-16 20:53 ` Greg KH
2005-05-18 12:40 ` [PATCH] libfs: add simple attribute files Arnd Bergmann
2005-05-18 20:24 ` Greg KH
2005-05-19 8:29 ` Arnd Bergmann
2005-05-19 9:18 ` 2.4 Kernel threads linux
2005-06-10 4:33 ` [PATCH] libfs: add simple attribute files Greg KH
2005-05-13 19:32 ` [PATCH 8/8] ppc64: add spufs user library Arnd Bergmann
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