Jeff Garzik writes:

Andrew Morton wrote:

quoted

So I dropped everything.  Let's start again from scratch.  I'd suggest that
for now we go with just an i386/x86_64 implementation, let the arch
maintainers wire things up when that has settled down.

It's my observation that that plan usually works the best.  Arch 

... except when the initial implementer picks an argument order which
doesn't work on some archs, as happened with sys_sync_file_range.
That is also the case with fallocate IIRC.

We did come up with an order that worked for everybody, but that
discussion seemed to get totally ignored by the ext4 developers.

Paul.