linux-kernel - [PATCH 4/8] mm/damon/reclaim: Use damon_select_ops() instead of damon_{v,p}a_set

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Message-Id: <20220215184603.1479-5-sj@kernel.org>
Date:   Tue, 15 Feb 2022 18:45:59 +0000
From:   SeongJae Park <sj@...nel.org>
To:     akpm@...ux-foundation.org
Cc:     xhao@...ux.alibaba.com, rientjes@...gle.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH 4/8] mm/damon/reclaim: Use damon_select_ops() instead of damon_{v,p}a_set_operations()

This commit makes DAMON_RECLAIM to select the registered monitoring
operations for the physical address space instead of setting it on its
own.  This allows DAMON_RECLAIM be independent of DAMON_PADDR, but leave
the dependency as is, because it's the only one monitoring operations it
use, and therefore it makes no sense to build DAMON_RECLAIM without
DAMON_PADDR.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/reclaim.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index 3c93095c793c..b53d9c22fad1 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -384,7 +384,9 @@ static int __init damon_reclaim_init(void)
 	if (!ctx)
 		return -ENOMEM;
 
-	damon_pa_set_operations(ctx);
+	if (damon_select_ops(ctx, DAMON_OPS_PADDR))
+		return -EINVAL;
+
 	ctx->callback.after_aggregation = damon_reclaim_after_aggregation;
 
 	target = damon_new_target();
-- 
2.17.1