linux-kernel - Re: [PATCH] Use __kernel_long_t in struct mq

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Message-ID: <52BC6D0A.8060407@zytor.com>
Date:	Thu, 26 Dec 2013 09:53:14 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"H.J. Lu" <hjl.tools@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Use __kernel_long_t in struct mq_attr

On 12/26/2013 07:54 AM, H.J. Lu wrote:
> On Wed, Dec 25, 2013 at 08:58:34AM -0800, H.J. Lu wrote:
>> Both x32 and x86-64 use the same struct mq_attr for system calls.  But
>> x32 long is 32-bit. This patch replaces long with __kernel_long_t in
>> struct mq_attr.
>>
> 
> Here is the updated patch which uses __kernel_long_t only if
> __BITS_PER_LONG == 64. 
>  

That seems wrong in multiple ways... not only does it add more clutter,
but it would seem to give the wrong types when __BITS_PER_LONG in
userspace is 32.

	-hpa

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