On Monday 03 August 2009, Mark Lord wrote: > (resending, no ack from anyone first time around). I actually wrote a lengthy reply on how I think the code around it should be done differently and then realized why we had done it that way originally and did not send out my reply. Your addition looks ok, the data structures are compatible on all architectures. > Add support for the FIEMAP ioctl for 32-bit user on 64-bit kernel. > > When using a 32-bit runtime on top of a 64-bit kernel, > programs like "filefrag" and "hdparm --fibmap" do not work correctly. > > This is because there's no compat ioctl entry for the FIEMAP call. > FIEMAP returns file extent info, similar to FIBMAP (but better). > > Since FIBMAP itself is b0rked on ext4, this leaves no way for a 32-bit > program to reliably get detailed block information for a file > when run on top of a 64-bit kernel. This patch addresses the issue. > > Once upstream, this patch could also be a candidate for -stable. > > Signed-off-by: Mark Lord <mlord@xxxxxxxxx> Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
