diff options
| -rw-r--r-- | drivers/nvdimm/pmem.c | 7 | ||||
| -rw-r--r-- | include/linux/dax.h | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 2f3aefe565c6..823b07774244 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -242,9 +242,16 @@ static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, return copy_from_iter_flushcache(addr, bytes, i); } +static void pmem_dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, + void *addr, size_t size) +{ + wb_cache_pmem(addr, size); +} + static const struct dax_operations pmem_dax_ops = { .direct_access = pmem_dax_direct_access, .copy_from_iter = pmem_copy_from_iter, + .flush = pmem_dax_flush, }; static void pmem_release_queue(void *q) diff --git a/include/linux/dax.h b/include/linux/dax.h index 28e398f8c59e..407dd3ff6e54 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -19,6 +19,8 @@ struct dax_operations { /* copy_from_iter: dax-driver override for default copy_from_iter */ 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); }; #if IS_ENABLED(CONFIG_DAX) |