linux-kernel - [PATCH 1/3] mm/damon/core: unset damos->walk

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Message-Id: <20250210182737.134994-2-sj@kernel.org>
Date: Mon, 10 Feb 2025 10:27:34 -0800
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 1/3] mm/damon/core: unset damos->walk_completed after confimed set

damos->walk_completed is only set, not unset.  This can cause next
damos_walk() finish earlier than expected.  Unset it after all
walk_completed is confirmed.

Fixes: bf0eaba0ff9c ("mm/damon/core: implement damos_walk()")
Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index 1a4dd644949b..1d9025d14d83 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -1489,6 +1489,9 @@ static void damos_walk_complete(struct damon_ctx *ctx, struct damos *s)
 		if (!siter->walk_completed)
 			return;
 	}
+	damon_for_each_scheme(siter, ctx)
+		siter->walk_completed = false;
+
 	complete(&control->completion);
 	mutex_lock(&ctx->walk_control_lock);
 	ctx->walk_control = NULL;
-- 
2.39.5