--- drivers/misc/pmem.c

+++ drivers/misc/pmem.c

@@ -1200,6 +1200,16 @@ static long pmem_ioctl(struct file *file

return pmem_connect(arg, file);

break;

+ case PMEM_CACHE_FLUSH:

+ {

+ struct pmem_region region;

+ if (copy_from_user(&region, (void __user *)arg,

+ sizeof(struct pmem_region)))

+ return -EFAULT;

+ flush_pmem_file(file, region.offset, region.len);

+ break;

+ }

+

case PMEM_CLEAN_INV_CACHES:

case PMEM_CLEAN_CACHES:

case PMEM_INV_CACHES: