On Mon, Oct 30, 2017 at 02:00:28PM +0100, Jan Kara wrote: > On Fri 27-10-17 01:35:36, weiping zhang wrote: > > this patch add a check for bdi_debug_root and do error handle for it. > > we should make sure it was created success, otherwise when add new > > block device's bdi folder(eg, 8:0) will be create a debugfs root directory. > > > > Signed-off-by: weiping zhang <zhangweiping@xxxxxxxxxxxxxxx> > > --- > > mm/backing-dev.c | 17 ++++++++++++++--- > > 1 file changed, 14 insertions(+), 3 deletions(-) > > These functions get called only on system boot - ENOMEM in those cases is > generally considered fatal and oopsing is acceptable result. So I don't > think this patch is needed. > OK, I drop this patch. Thanks a ton.
