Re: Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM

[Matthew Wilcox <matthew@wil.cx>]

On Mon, Jun 25, 2007 at 12:37:34PM +0100, David Woodhouse wrote:
> - Some architectures must align 64-bit integers into an aligned
>   pair of registers. A slot may be wasted for padding.
> - S390 may not have a 64-bit integer in slots 5/6.

Uhm, doesn't sys_sync_file_range2 break that?

+asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
+                                  unsigned offset_hi, unsigned offset_lo,
+                                  unsigned nbytes_hi, unsigned nbytes_lo)

How about:

asmlinkage long compat_sys_sync_file_range2(unsigned offset_hi,
		unsigned offset_lo, unsigned nbytes_hi, unsigned nbytes_lo, 
		int fd, unsigned int flags)

Also, you might want to put something in the syscall file about signed
vs unsigned arguments and how they behave with 32-on-64 systems.