Re: [RFC PATCH v2 0/3] realize dax_operations for dm-snapshot
On Tue, Nov 20, 2018 at 7:27 PM Huaisheng Ye <yehs2007(a)zoho.com> wrote:
From: Huaisheng Ye <yehs1(a)lenovo.com>
Changes
v1->v2:
Add NULL funtions for origin_dax_direct_access and
origin_dax_copy_from/to_iter in order to avoid building
error when CONFIG_DAX_DRIVER has NOT been enabled.
[v1]: https://lkml.org/lkml/2018/11/20/759
This series patches are used to realize the dax_operations for dm-snapshot
with persistent memory device.
How does this interact with mmap write faults if the mapping is dax
and the page needs to be cow'd?