[RFC PATCH 6/8] mm/damon: document region size validation in damon_set_regions()

[SJ Park <sj@kernel.org>]

The kernel doc comment of damon_region clearly specifies every region
should have positive size.  But it is unclear who should verify it.
damon_set_regions() is the recommended DAMON core function for setting
regions from the callers, and has the verification.  Update the comment
to clarify the callers should be ok to pass any values for region
addresses, as long as they use damon_set_regions().

Signed-off-by: SJ Park <sj@kernel.org>
---
 include/linux/damon.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index 616bdf0954b52..2661231c0ae82 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -49,7 +49,8 @@ struct damon_size_range {
  * @list:		List head for siblings.
  * @age:		Age of this region.
  *
- * For any use case, @ar should be non-zero positive size.
+ * For any use case, @ar should be non-zero positive size.  damon_set_regions()
+ * does the validation.
  *
  * @nr_accesses is reset to zero for every &damon_attrs->aggr_interval and be
  * increased for every &damon_attrs->sample_interval if an access to the region
-- 
2.47.3