diff options
Diffstat (limited to 'drivers/dax/super.c')
| -rw-r--r-- | drivers/dax/super.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 3600ff786646..557b93703532 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -201,8 +201,10 @@ static umode_t dax_visible(struct kobject *kobj, struct attribute *a, int n) if (!dax_dev) return 0; - if (a == &dev_attr_write_cache.attr && !dax_dev->ops->flush) +#ifndef CONFIG_ARCH_HAS_PMEM_API + if (a == &dev_attr_write_cache.attr) return 0; +#endif return a->mode; } @@ -267,18 +269,23 @@ size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, } EXPORT_SYMBOL_GPL(dax_copy_from_iter); -void dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t size) +#ifdef CONFIG_ARCH_HAS_PMEM_API +void arch_wb_cache_pmem(void *addr, size_t size); +void dax_flush(struct dax_device *dax_dev, void *addr, size_t size) { - if (!dax_alive(dax_dev)) + if (unlikely(!dax_alive(dax_dev))) return; - if (!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags)) + if (unlikely(!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags))) return; - if (dax_dev->ops->flush) - dax_dev->ops->flush(dax_dev, pgoff, addr, size); + arch_wb_cache_pmem(addr, size); } +#else +void dax_flush(struct dax_device *dax_dev, void *addr, size_t size) +{ +} +#endif EXPORT_SYMBOL_GPL(dax_flush); void dax_write_cache(struct dax_device *dax_dev, bool wc) |