linux-kernel - Re: [PATCH] ipc/sem: 64bit union semun definition

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Date:	Tue, 05 May 2015 21:37:37 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	a22017@...orola.com
Cc:	akpm@...ux-foundation.org, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipc/sem: 64bit union semun definition

On Tuesday 05 May 2015 11:28:43 a22017@...orola.com wrote:
> From: Ling-Juan Sun <a22017@...orola.com>
> 
> The member of semun semid_ds has new definition
> semid64_ds for 64bit architectures.
> 
> Signed-off-by: Ling-Juan Sun <a22017@...orola.com>
> 

Please describe in more detail what this is needed for. The way I
understood this, used space would always define union semun
to define semid_ds, but that would normally match the kernel's
semid64_ds.

Also, what is the connection with 64-bit architectures here?

	Arnd
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