| From: |
| Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w-AT-public.gmane.org> |
| To: |
| linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw-AT-public.gmane.org |
| Subject: |
| [PATCH 0/7] dax: unified host inode for device-dax mappings |
| Date: |
| Mon, 15 Aug 2016 20:24:58 -0700 |
| Message-ID: |
| <147131789847.13727.7932192631919982514.stgit@dwillia2-desk3.amr.corp.intel.com> |
| Cc: |
| linux-fsdevel-u79uwXL29TY76Z2rM5mHXA-AT-public.gmane.org, viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn-AT-public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA-AT-public.gmane.org |
There are two scenarios where we need mappings of a /dev/dax device to
share a single host inode, invalidating mappings at device shutdown, and
coordinating resize of an actively mapped device. This series addresses
the unmap-on-shutdown case and includes reworks, like the cdev api
conversion, to prepare for a dynamic resize / allocation capability.
Recall that device-DAX, introduced in v4.7 [1], is a mechanism to
provide deterministic mapping behavior for performance- /
feature-differentiated memory ranges.
[1]: https://git.kernel.org/cgit/linux/kernel/git/torvalds/lin...
---
Dan Williams (7):
dax: cleanup needlessly global symbol warnings
dax: reorder dax_fops function definitions
dax: rename fops from dax_dev_ to dax_
dax: embed a struct device in dax_dev
dax: convert to the cdev api
dax: define a unified inode/address_space for device-dax mappings
dax: unmap/truncate on device shutdown
drivers/dax/Kconfig | 5
drivers/dax/dax.c | 555 ++++++++++++++++++++++++++------------------
drivers/dax/pmem.c | 2
fs/char_dev.c | 1
include/uapi/linux/magic.h | 1
5 files changed, 337 insertions(+), 227 deletions(-)
