mm/damon/core: update kernel-doc comments for DAMOS action supports of each DAMON operations set

Patch series "mm/damon: trivial fixups".

This patchset contains patches for trivial fixups of DAMON's
documentation, MAINTAINERS section, and selftests.


This patch (of 8):

Supports of each DAMOS action are up to DAMON operations set
implementation in use, but not well mentioned on the kernel-doc comments. 
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Link: https://lkml.kernel.org/r/20230110190400.119388-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20230110190400.119388-2-sj@kernel.orgSigned-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

include/linux/damon.h

@@ -91,6 +91,12 @@ struct damon_target {
  * @DAMOS_LRU_DEPRIO:	Deprioritize the region on its LRU lists.
  * @DAMOS_STAT:		Do nothing but count the stat.
  * @NR_DAMOS_ACTIONS:	Total number of DAMOS actions
+ *
+ * The support of each action is up to running &struct damon_operations.
+ * &enum DAMON_OPS_VADDR and &enum DAMON_OPS_FVADDR supports all actions except
+ * &enum DAMOS_LRU_PRIO and &enum DAMOS_LRU_DEPRIO.  &enum DAMON_OPS_PADDR
+ * supports only &enum DAMOS_PAGEOUT, &enum DAMOS_LRU_PRIO, &enum
+ * DAMOS_LRU_DEPRIO, and &DAMOS_STAT.
  */
 enum damos_action {
 	DAMOS_WILLNEED,