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[158.174.22.5]) by smtp.gmail.com with ESMTPSA id t82sm172281lff.50.2021.10.14.00.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Oct 2021 00:50:58 -0700 (PDT) From: Rikard Falkeborn To: SeongJae Park , Andrew Morton , Naoya Horiguchi Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Rikard Falkeborn Subject: [PATCH 1/2] mm/damon/vaddr: constify static mm_walk_ops Date: Thu, 14 Oct 2021 09:50:41 +0200 Message-Id: <20211014075042.17174-2-rikard.falkeborn@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211014075042.17174-1-rikard.falkeborn@gmail.com> References: <20211014075042.17174-1-rikard.falkeborn@gmail.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: 6A50E1902 X-Stat-Signature: phspfpsjfby15gfig1tqokf6qguicz7n Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=khfhiOqD; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf22.hostedemail.com: domain of rikard.falkeborn@gmail.com designates 209.85.167.42 as permitted sender) smtp.mailfrom=rikard.falkeborn@gmail.com X-Rspamd-Server: rspam02 X-HE-Tag: 1634197860-282431 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The only usage of these structs is to pass their addresses to walk_page_range(), which takes a pointer to const mm_walk_ops as argument. Make them const to allow the compiler to put them in read-only memory. Signed-off-by: Rikard Falkeborn Reviewed-by: SeongJae Park Reviewed-by: Anshuman Khandual --- mm/damon/vaddr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 953c145b4f08..65d4f115fa66 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -476,7 +476,7 @@ static int damon_mkold_pmd_entry(pmd_t *pmd, unsigned long addr, return 0; } -static struct mm_walk_ops damon_mkold_ops = { +static const struct mm_walk_ops damon_mkold_ops = { .pmd_entry = damon_mkold_pmd_entry, }; @@ -572,7 +572,7 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr, return 0; } -static struct mm_walk_ops damon_young_ops = { +static const struct mm_walk_ops damon_young_ops = { .pmd_entry = damon_young_pmd_entry, };