Re: Reduce struct page by 8 bytes on 64bit

David S. Miller
2003-04-16T21:35:41Z

From: Andrew Morton <akpm@digeo.com>
Date: Wed, 16 Apr 2003 14:43:11 -0700

Well are we sure that the `flags' and `count' fields will always fall into
the same 256-byte range? Wouldn't it subtly break if sizeof(struct page)
became not a multiple of eight? Will the compiler pad it out anyway?

As long as there is a long or pointer member, the structure
will be required to be 8 byte or better aligned.