Re: new architectures, time_t __kernel_long_t
From: Al Viro <viro@ZenIV.linux.org.uk>
Date: 2012-12-21 05:02:11
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On Thu, Dec 20, 2012 at 09:00:27PM -0800, H. Peter Anvin wrote:
On 12/20/2012 08:57 PM, Al Viro wrote:quoted
On Wed, Nov 14, 2012 at 12:18:01PM +0000, Arnd Bergmann wrote:quoted
The other types that are used as 64 bit on x32 are ino_t, nlink_t, size_t, ssize_t, ptrdiff_t, and off_t.*Kernel-side* we should not give a damn about the userland nlink_t, period. Making it architecture-dependent had been a bad mistake that essentially made nlink_t useless for the kernel. That mistake had been fixed; please, do not bring it back. If some userland structure needs to include a field encoding nlink_t values, please use an explicitly-sized type when refering to it kernel-side.We should never use userland types per se. We can use __kernel_*_t typedefs to make the kernel headers neater if it makes sense, but that is often not even necessary.
... as long as we do not have typedef __kernel_foo_t foo_t in linux/types.h.