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b=B0KOOB1vokuwb80M4eI7jlPbhSZfGFRBd+Dw9CLV57xwAGfJHlTnfX+eM+xLnASqG S0Btv1Ykwk3sSzloClyfGKdCOMFgXCY0mC+vP9zbB1bKt5T3364+sTMduxm+FNRyZf o44W808vD0BwHDU+4d7iuQe4CfR7+DMCGPwxCHGvV04jJKc6FXDUGijAazry20Xj9V qw/vk2nA53vKZ6SsiAQ1JN1eGHE2ZGYTme8CB/SbTty/TWcncWUyMQPwB26aPaywq2 Oq6KLUwQE3PJH72GtzMlUePxyfmruDAYZGWbHonJnC6m9U8/wM9o5jGl8QZC8zndTK q6BQYZoE1y1+g== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 4/8] mm/damon/reclaim: remove duplicated min_region_sz power of 2 check Date: Sun, 5 Jul 2026 08:55:55 -0700 Message-ID: <20260705155600.96555-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260705155600.96555-1-sj@kernel.org> References: <20260705155600.96555-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: C4C2C1A0009 X-Stat-Signature: 1hmt7wyu8t8p6gzr8uz5eja6htodh8xk X-HE-Tag: 1783266966-687617 X-HE-Meta: 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 T1f3cxKu 7c2iOn2wLzoxukplkPKJXOoD5qsLD4vgUvF/9wwFA8d95pH9ICwGkHsAJ3fUjnwYCPoKjhMui3KB6MZdvJuVPMmxSJIJWMnk0CYhlAiNfrtV2NDWRi4UVt0N50kIxduRJ4GNSf7pcAdt36mK3GL0iVpr2jCl1+7i+zi8iFlMassGoCNAF7tH1aw1mUygY+6Rk7q5kd5SEtQJIAGoCgIZjdgwVX8kuKh3VBVfAiGp5FZKP+o61sRERuzedb/A1LjvE4zGbdW3AmXw/cClmHk74y27gSQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: DAMON_RECLAIM validates the user input for min_region_sz. The same validation is done inside damon_start() and damon_commit_ctx(). Remove the duplicate. Signed-off-by: SJ Park --- mm/damon/reclaim.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index 11b70d0a9a6f0..6469b25cc34f9 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -208,11 +208,6 @@ static int damon_reclaim_apply_parameters(void) param_ctx->addr_unit = addr_unit; param_ctx->min_region_sz = max(DAMON_MIN_REGION_SZ / addr_unit, 1); - if (!is_power_of_2(param_ctx->min_region_sz)) { - err = -EINVAL; - goto out; - } - if (!damon_reclaim_mon_attrs.aggr_interval) { err = -EINVAL; goto out; -- 2.47.3