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| author | Dan Williams <dan.j.williams@intel.com> | 2017-07-03 16:54:58 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-07-03 16:54:58 -0700 |
| commit | 9d92573fff3ec70785ef1815cc80573f70e7a921 (patch) | |
| tree | bce6e6bbad56f805d1adcebddabf9dd9e8072ce4 /include/linux/dax.h | |
| parent | 2de5148ffb12ff6b4088125f44818771e78e6830 (diff) | |
| parent | 0b277961f4484fb3f142caaa1dd1748cb0b2cbee (diff) | |
Merge branch 'for-4.13/dax' into libnvdimm-for-nextlibnvdimm-for-4.13
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 5ec1f6c47716..8f39db7439c3 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -16,8 +16,15 @@ struct dax_operations { */ long (*direct_access)(struct dax_device *, pgoff_t, long, void **, pfn_t *); + /* copy_from_iter: required operation for fs-dax direct-i/o */ + size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t, + struct iov_iter *); + /* flush: optional driver-specific cache management after writes */ + void (*flush)(struct dax_device *, pgoff_t, void *, size_t); }; +extern struct attribute_group dax_attribute_group; + #if IS_ENABLED(CONFIG_DAX) struct dax_device *dax_get_by_host(const char *host); void put_dax(struct dax_device *dax_dev); @@ -75,6 +82,11 @@ void kill_dax(struct dax_device *dax_dev); void *dax_get_private(struct dax_device *dax_dev); long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); +size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, + size_t bytes, struct iov_iter *i); +void dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, + size_t size); +void dax_write_cache(struct dax_device *dax_dev, bool wc); /* * We use lowest available bit in exceptional entry for locking, one bit for |