[Ocfs2-devel] [PATCH 3/3] fs: Add the reflink(2) system call.

[Al Viro]

On Sun, May 03, 2009 at 12:27:57AM -0600, Matthew Wilcox wrote:
> On Sat, May 02, 2009 at 11:15:03PM -0700, Joel Becker wrote:
> > This implements reflinkat(2) and reflink(2).  See
> > Documentation/reflink.txt for a description of the reflink(2) system
> > call.
> 
> Do we need to add sys_reflink()?  Since sys_reflinkat() has a superset
> of the functionality, presumably glibc can provide both reflink() and
> reflinkat() calls, and userspace need never know that glibc is calling
> sys_reflinkat() for both.

Yes, indeed...

Another question: do we want that to work across mounpoint boundary?
It's probably OK in this case, but...