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| author | Dan Williams <dan.j.williams@intel.com> | 2020-04-03 05:55:17 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2020-04-03 05:55:17 +0300 |
| commit | f6d2b802f80d0ca89ee1f51c1781b3f79cdb25d5 (patch) | |
| tree | fe4dfcaafe847b71ebd040f348c0a2ee8206b38a /include/linux/device-mapper.h | |
| parent | d3b88655c0a157c11370b8faf50e82ecb1c17d54 (diff) | |
| parent | 4e4ced93794acb42adb19484132966defba8f3a6 (diff) | |
| download | linux-f6d2b802f80d0ca89ee1f51c1781b3f79cdb25d5.tar.xz | |
Merge branch 'for-5.7/libnvdimm' into libnvdimm-for-next
- Introduce 'zero_page_range' as a dax operation. This facilitates
filesystem-dax operation without a block-device.
- Advertise a persistence-domain for of_pmem and papr_scm. The
persistence domain indicates where cpu-store cycles need to reach in
the platform-memory subsystem before the platform will consider them
power-fail protected.
- Fixup some flexible-array declarations.
Diffstat (limited to 'include/linux/device-mapper.h')
| -rw-r--r-- | include/linux/device-mapper.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 475668c69dbc..af48d9da3916 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -141,6 +141,8 @@ typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); typedef size_t (*dm_dax_copy_iter_fn)(struct dm_target *ti, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i); +typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff, + size_t nr_pages); #define PAGE_SECTORS (PAGE_SIZE / 512) void dm_error(const char *message); @@ -195,6 +197,7 @@ struct target_type { dm_dax_direct_access_fn direct_access; dm_dax_copy_iter_fn dax_copy_from_iter; dm_dax_copy_iter_fn dax_copy_to_iter; + dm_dax_zero_page_range_fn dax_zero_page_range; /* For internal device-mapper use. */ struct list_head list; |