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Date: Mon, 3 Feb 2014 11:58:55 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Chen Gang <gang.chen.5i5j@...il.com> Cc: James Hogan <james.hogan@...tec.com>, devel@...verdev.osuosl.org, andreas.dilger@...el.com, Antonio Quartulli <antonio@...hcoding.com>, Greg KH <gregkh@...uxfoundation.org>, bergwolf@...il.com, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, David Miller <davem@...emloft.net>, oleg.drokin@...el.com, jacques-charles.lafoucriere@....fr, jinshan.xiong@...el.com, netdev <netdev@...r.kernel.org>, linux-metag@...r.kernel.org Subject: Re: [PATCH] drivers: staging: lustre: lustre: include: add "__attribute__((packed))" for the related union On Sat, Feb 01, 2014 at 09:57:39PM +0800, Chen Gang wrote: > It seems, our kernel still stick to treate 'pack' region have effect > with both 'align' and 'sizeof'. > It's not about packed regions. It's about unions. It's saying the sizeof() a union is a multiple of 4 unless it's packed. union foo { short x; short y; }; The author intended the sizeof(union foo) to be 2 but on metag arch then it is 4. regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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