From: David Howells <dhowells@redhat.com>
To: NeilBrown <neilb@suse.de>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 001 of 2] Prepare for __copy_from_user_inatomic to not zero missed bytes.
Date: Thu, 25 May 2006 12:59:03 +0100 [thread overview]
Message-ID: <19591.1148558343@warthog.cambridge.redhat.com> (raw)
In-Reply-To: <1060522044652.31268@suse.de>
NeilBrown <neilb@suse.de> wrote:
> Interestingly 'frv' disables preempt in kmap_atomic, but its
> copy_from_user doesn't expect faults and never zeros the tail...
What gives you the idea that copy_from_user() on FRV doesn't expect or handle
faults when CONFIG_MMU is set? And why do you say it never zeroes the tail?
David
next prev parent reply other threads:[~2006-05-25 11:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-22 4:46 [PATCH - RESEND - 000 of 2] Avoid subtle cache consistancy problem NeilBrown
2006-05-22 4:46 ` [PATCH 001 of 2] Prepare for __copy_from_user_inatomic to not zero missed bytes NeilBrown
2006-05-25 11:59 ` David Howells [this message]
2006-05-25 12:24 ` Neil Brown
2006-05-22 4:46 ` [PATCH 002 of 2] Make copy_from_user_inatomic NOT zero the tail on i386 NeilBrown
-- strict thread matches above, loose matches on Subject: below --
2006-04-28 2:04 [PATCH INTRO] Re: [RFC] copy_from_user races with readpage, [PATCH 000 of 2] Introduction NeilBrown
2006-04-28 2:10 ` [PATCH 001 of 2] Prepare for __copy_from_user_inatomic to not zero missed bytes NeilBrown
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