Re: [PATCH V6 2/3] dma-mapping: Rework dma_get_cache_alignment()function

2017-09-21 Thread Christoph Hellwig
On Thu, Sep 21, 2017 at 12:28:25PM +0800, 陈华才 wrote: > Hi, Christoph, > > I have changed dma_get_cache_alignment's return value, and I don't know > whether those drivers want to return ARCH_DMA_MINALIGN unconditionally. So I > pass a NULL for those drivers, in order to keep their old behavior.

Re: [PATCH V6 2/3] dma-mapping: Rework dma_get_cache_alignment()function

2017-09-20 Thread 陈华才
- From: "Christoph Hellwig"; Date: Tue, Sep 19, 2017 11:02 PM To: "Huacai Chen"; Cc: "Christoph Hellwig"; "Marek Szyprowski"; "Robin Murphy"; "Andrew Morton"; "Fuxin Zhang"; "linux-kernel"; "James E .

Re: [PATCH V6 2/3] dma-mapping: Rework dma_get_cache_alignment() function

2017-09-19 Thread Christoph Hellwig
> mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * > mdev->limits.mtt_seg_size, > -dma_get_cache_alignment()) / > mdev->limits.mtt_seg_size; > +dma_get_cache_alignment(NULL)) / > mdev->limits.mtt