Re: [PATCH] usb-storage: stop using block layer bounce buffers

2018-05-02 Thread Alan Stern
On Wed, 2 May 2018, Christoph Hellwig wrote: > On Fri, Apr 27, 2018 at 10:09:17AM -0400, Alan Stern wrote: > > On Fri, 27 Apr 2018, Christoph Hellwig wrote: > > > > > On Sun, Apr 15, 2018 at 11:24:11AM -0400, Alan Stern wrote: > > > > On Sun, 15 Apr 2018, Christoph Hellwig wrote: > > > > > > > >

Re: [PATCH] usb-storage: stop using block layer bounce buffers

2018-05-02 Thread Christoph Hellwig
On Fri, Apr 27, 2018 at 10:09:17AM -0400, Alan Stern wrote: > On Fri, 27 Apr 2018, Christoph Hellwig wrote: > > > On Sun, Apr 15, 2018 at 11:24:11AM -0400, Alan Stern wrote: > > > On Sun, 15 Apr 2018, Christoph Hellwig wrote: > > > > > > > USB host controllers now must handle highmem, so we can g

Re: [PATCH] usb-storage: stop using block layer bounce buffers

2018-04-27 Thread Alan Stern
On Fri, 27 Apr 2018, Christoph Hellwig wrote: > On Sun, Apr 15, 2018 at 11:24:11AM -0400, Alan Stern wrote: > > On Sun, 15 Apr 2018, Christoph Hellwig wrote: > > > > > USB host controllers now must handle highmem, so we can get rid of bounce > > > buffering highmem pages in the block layer. > >

Re: [PATCH] usb-storage: stop using block layer bounce buffers

2018-04-26 Thread Christoph Hellwig
On Sun, Apr 15, 2018 at 11:24:11AM -0400, Alan Stern wrote: > On Sun, 15 Apr 2018, Christoph Hellwig wrote: > > > USB host controllers now must handle highmem, so we can get rid of bounce > > buffering highmem pages in the block layer. > > Sorry, I don't quite understand what you are saying. Do

Re: [PATCH] usb-storage: stop using block layer bounce buffers

2018-04-15 Thread Alan Stern
On Sun, 15 Apr 2018, Christoph Hellwig wrote: > USB host controllers now must handle highmem, so we can get rid of bounce > buffering highmem pages in the block layer. Sorry, I don't quite understand what you are saying. Do you mean that all USB host controllers now magically _do_ handle highmem

[PATCH] usb-storage: stop using block layer bounce buffers

2018-04-15 Thread Christoph Hellwig
USB host controllers now must handle highmem, so we can get rid of bounce buffering highmem pages in the block layer. Signed-off-by: Christoph Hellwig --- drivers/usb/storage/scsiglue.c | 9 - 1 file changed, 9 deletions(-) diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/stora