linux-kernel - [PATCH 01/22] mm/damon/paddr: make supported DAMOS actions of paddr clear

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Message-Id: <20220913174449.50645-2-sj@kernel.org>
Date:   Tue, 13 Sep 2022 17:44:28 +0000
From:   SeongJae Park <sj@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     SeongJae Park <sj@...nel.org>, damon@...ts.linux.dev,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 01/22] mm/damon/paddr: make supported DAMOS actions of paddr clear

The 'swtich-case' statement in 'damon_va_apply_scheme()' function
provides a 'case' for every supported DAMOS action while all
not-yet-supported DAMOS actions fall through the 'default' case, and
comment it so that people can easily know which actions are supported.
Its counterpart in 'paddr', 'damon_pa_apply_scheme()', however, doesn't.
This commit makes the 'paddr' side function follows the pattern of
'vaddr' for better readability and consistency.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/paddr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index f00cbe74a00e..5eba09d50855 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -274,7 +274,10 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx,
 		return damon_pa_mark_accessed(r);
 	case DAMOS_LRU_DEPRIO:
 		return damon_pa_deactivate_pages(r);
+	case DAMOS_STAT:
+		break;
 	default:
+		/* DAMOS actions that not yet supported by 'paddr'. */
 		break;
 	}
 	return 0;
-- 
2.25.1