From: Kaixu Xia <kaixuxia@tencent.com>
Date: Thu, 8 Sep 2022 03:13:17 +0000 (+0800)
Subject: mm/damon/vaddr: add a comment for 'default' case in damon_va_apply_scheme()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5934ec1362b235c4341807c28f79b6a596ce1b40;p=linux.git

mm/damon/vaddr: add a comment for 'default' case in damon_va_apply_scheme()

The switch case 'DAMOS_STAT' and switch case 'default' have same return
value in damon_va_apply_scheme(), and the 'default' case is for DAMOS
actions that not supported by 'vaddr'.  It might make sense to add a
comment here.

[akpm@linux-foundation.org: fx comment grammar]
Link: https://lkml.kernel.org/r/1662606797-23534-1-git-send-email-kaixuxia@tencent.com
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index 349b44d699e2a..c2c08c1b316bd 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -658,6 +658,9 @@ static unsigned long damon_va_apply_scheme(struct damon_ctx *ctx,
 	case DAMOS_STAT:
 		return 0;
 	default:
+		/*
+		 * DAMOS actions that are not yet supported by 'vaddr'.
+		 */
 		return 0;
 	}