lkml.org 
[lkml]   [2014]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [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



\
 
 \ /
  Last update: 2014-02-03 10:41    [W:0.136 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site