On Wed, Sep 06, 2017 at 03:55:30PM +0200, Christoph Hellwig wrote: > From: Akinobu Mita <akinobu.mita@xxxxxxxxx> > > The initial chunk size for host memory buffer allocation is currently > PAGE_SIZE << MAX_ORDER. MAX_ORDER order allocation is usually failed > without CONFIG_DMA_CMA. So the HMB allocation is retried with chunk size > PAGE_SIZE << (MAX_ORDER - 1) in general, but there is no problem if the > retry allocation works correctly. > > Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx> > [hch: rebased] > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > --- Looks good. Reviewed-by: Keith Busch <keith.busch@xxxxxxxxx>