Re: [patch 1/3] mm: pagecache write deadlocks zerolength fix

From: Andreas Schwab
Date: Thu Nov 30 2006 - 05:30:55 EST


Nick Piggin <npiggin@xxxxxxx> writes:

> On Thu, Nov 30, 2006 at 11:15:39AM +0100, Andreas Schwab wrote:
>> Nick Piggin <npiggin@xxxxxxx> writes:
>>
>> > writev with a zero-length segment is a noop, and we shouldn't return EFAULT.
>>
>> AFAICS the callers of these functions never pass a zero length.
>
> They can in the case of a zero length write.

How? All (indirect) callers I could find explicitly handle the
zero-length case.

Andreas.

--
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/