On Fri, Oct 26, 2018 at 04:10:46PM -0400, Olga Kornievskaia wrote: > From: Olga Kornievskaia <kolga@xxxxxxxxxx> > > This patch makes it the responsibility of individual filesystems to > allow or deny cross device copies. Both NFS and CIFS have operations > for cross-server copies, and later patches will implement this feature. > > Note that as of this patch, the copy_file_range() function might be passed > superblocks from different filesystem types. -EXDEV should be returned > if cross device copies aren't supported, causing the VFS to fall back > on using do_splice_direct(). > > Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx> Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
