Re: [PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-28 Thread Ross Zwisler
On Wed, Sep 28, 2016 at 07:47:20AM +1000, Dave Chinner wrote: > On Tue, Sep 27, 2016 at 02:47:55PM -0600, Ross Zwisler wrote: > > DAX PMD support was added via the following commit: > > > > commit e7b1ea2ad658 ("ext2: huge page fault support") > > > > I believe this path to be untested as ext2

Re: [PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-28 Thread Ross Zwisler
On Wed, Sep 28, 2016 at 07:47:20AM +1000, Dave Chinner wrote: > On Tue, Sep 27, 2016 at 02:47:55PM -0600, Ross Zwisler wrote: > > DAX PMD support was added via the following commit: > > > > commit e7b1ea2ad658 ("ext2: huge page fault support") > > > > I believe this path to be untested as ext2

Re: [PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-27 Thread Dave Chinner
On Tue, Sep 27, 2016 at 02:47:55PM -0600, Ross Zwisler wrote: > DAX PMD support was added via the following commit: > > commit e7b1ea2ad658 ("ext2: huge page fault support") > > I believe this path to be untested as ext2 doesn't reliably provide block > allocations that are aligned to 2MiB. In

Re: [PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-27 Thread Dave Chinner
On Tue, Sep 27, 2016 at 02:47:55PM -0600, Ross Zwisler wrote: > DAX PMD support was added via the following commit: > > commit e7b1ea2ad658 ("ext2: huge page fault support") > > I believe this path to be untested as ext2 doesn't reliably provide block > allocations that are aligned to 2MiB. In

[PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-27 Thread Ross Zwisler
DAX PMD support was added via the following commit: commit e7b1ea2ad658 ("ext2: huge page fault support") I believe this path to be untested as ext2 doesn't reliably provide block allocations that are aligned to 2MiB. In my testing I've been unable to get ext2 to actually fault in a PMD. It

[PATCH v3 04/11] ext2: remove support for DAX PMD faults

2016-09-27 Thread Ross Zwisler
DAX PMD support was added via the following commit: commit e7b1ea2ad658 ("ext2: huge page fault support") I believe this path to be untested as ext2 doesn't reliably provide block allocations that are aligned to 2MiB. In my testing I've been unable to get ext2 to actually fault in a PMD. It