On Tue, Jun 26, 2018 at 3:30 PM, Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> wrote: > This series fixes a few issues that I found with DM's handling of DAX > devices. Here are some of the issues I found: > > * We can create a dm-stripe or dm-linear device which is made up of an > fsdax PMEM namespace and a raw PMEM namespace but which can hold a > filesystem mounted with the -o dax mount option. DAX operations to > the raw PMEM namespace part lack struct page and can fail in > interesting/unexpected ways when doing things like fork(), examining > memory with gdb, etc. > > * We can create a dm-stripe or dm-linear device which is made up of an > fsdax PMEM namespace and a BRD ramdisk which can hold a filesystem > mounted with the -o dax mount option. All I/O to this filesystem > will fail. > For the series: Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>
