On Thursday 12 May 2016 10:17:58 Catalin Marinas wrote:

On Wed, May 11, 2016 at 09:30:07PM +0200, Arnd Bergmann wrote:

quoted

On Wednesday 11 May 2016 17:59:01 Catalin Marinas wrote:

I don't think the shifts are a problem, the main downside would be
the limit to 44 bits of file offsets (16TB files), but it's also
unclear if that is a practical problem at all. If it is, we run
into the same problem on all other 32-bit architectures too.

I hope people are seriously thinking of moving to an LP64 ABI if they
have such large file offset needs.

Good point. 44 bits of file size is certainly enough for mmap()
on a 32-bit task: you would only be able to map a very small fraction
of the file anyway, and if you want to map larger files, and should
move to 64-bit tasks long before this becomes a limitation.

	Arnd