linux-kernel - Re: [RFC][PATCH 4/6] min and max kobjects

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Date:	Thu, 25 Jan 2007 17:34:55 +0100
From:	Nadia Derbey <Nadia.Derbey@...l.net>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 4/6] min and max kobjects

Randy Dunlap wrote:
> On Tue, 16 Jan 2007 07:15:20 +0100 Nadia.Derbey@...l.net wrote:
> 
> 
>>[PATCH 04/06]
>>
>>Introduces the kobjects associated to each tunable min and max value
>>

<snip>

>>Index: linux-2.6.20-rc4/kernel/autotune/akt.c
>>===================================================================
>>--- linux-2.6.20-rc4.orig/kernel/autotune/akt.c	2007-01-15 15:13:31.000000000 +0100
>>+++ linux-2.6.20-rc4/kernel/autotune/akt.c	2007-01-15 15:25:35.000000000 +0100
>>@@ -203,5 +207,121 @@ ssize_t store_tuning_mode(struct auto_tu
>> }
>> 
>> 

<snip>

>>+
>>+/*
>>+ * FUNCTION:    Set operation called by tunable_attr_store (i.e. when a
>>+ *              string is stored into /sys/tunables/<tunable>/min).
>>+ *
>>+ * PARAMETERS:  count: input buffer size (including the '\0')
>>+ *
>>+ * RETURN VALUE: >0: number of characters used from the input buffer
>>+ *               <= 0: failure
> 
> 
> I would expect a return value of 0 not to indicate failure;
> only <0 should do that.  So is this a typo or a real case where
> a return of 0 indicates failure?

This is a typo

> 
> 
>>+ */
>>+ssize_t store_tunable_min(struct auto_tune *tun_addr, const char *buf,
>>+			size_t count)
>>+{


<snip>

>>+/*
>>+ * FUNCTION:    Set operation called by tunable_attr_store (i.e. when a
>>+ *              string is stored into /sys/tunables/<tunable>/max).
>>+ *
>>+ * PARAMETERS:  count: input buffer size (including the '\0')
>>+ *
>>+ * RETURN VALUE: >0: number of characters used from the input buffer
>>+ *               <= 0: failure
> 
> 
> same question.

Same answer ;-)

> 
> 


Regards,
Nadia

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