On 09/29/2013 08:14 AM, Richard Weinberger wrote: > On Sun, Sep 29, 2013 at 7:22 AM, Pádraig Brady <[email protected]> wrote: >> On 09/25/2013 03:37 PM, richard -rw- weinberger wrote: >>> On Wed, Sep 25, 2013 at 4:28 PM, Thomas Meyer <[email protected]> wrote: >>>> Am Mittwoch, den 25.09.2013, 08:59 -0500 schrieb Rob Landley: >>>>> On 09/24/2013 01:36:56 PM, Thomas Meyer wrote: >>>>>> Hi, >>>>>> >>>>>> Is there such a thing? >>>>> >>>>> In the kernel's vfs layer? >>>> >>>> Yes, that would be a nice feature! >>> >>> You mean reflinks? >>> Currently only OCFS2 and btrfs support them. >>> Both using a fs specific ioctl(). >>> IIRC GNU cp uses the btrfs specific one if the --reflink parameter is used. >> >> coreutils is waiting for a reflink syscall to materialize >> rather than adding new per filesystem support >> http://lwn.net/Articles/335380/ > > Is this the correct link? It's a proposal for a reflink() syscall. > But corrently both OCFS2 and btrfs are using ioctl(). > > Digging into GNU coreutils shows that their cp's > clone_file() only supports the btrfs ioctl(). > I don't know what the GNU folks big plan is, maybe you know more. :-)
The current coreutils plan is to not to call any more file system specific ioctls, rather waiting until a more general syscall is available. thanks, Pádraig. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
