Messages in this thread | | | Date | Mon, 3 Feb 2014 11:58:55 +0300 | From | Dan Carpenter <> | 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
| |