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bh=3vYcUeBmXr4garxcQHjJx07QLWWSN2yZSMq4StEXQLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P0xtLSkFs7pqEae043u1j3xnB95Eun6fs+QGZgZO9d81R7nVANe8WzFd7INUNaH5J G0cu5g13QicS+7SpfXLfFYjeCO7OZky97UtEnCU1Fg8vOIqL0guCnn+Met1AgHKg5M 5NTPXJXNgEVF4hk8vk1FGAsAu82jhb0v522m+QxbyOFfL7UlnXHN/ha84/c+mqS2eq 0qSRuP9CaCpfcNNAkk+LdrdatyCNz+99Jk1hlLUrlAc3UBxmBAqyPlfv8/yoebiFZt WeGrFytSTuFCntaqviHlHDTKBMaMONUSg6xP56TYbN2K/XjRoJDfgJDnBS6pPwmnAS 6VzqV0nDquVZQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 34/37] mm/damon/core: report whether the page fault was for writing Date: Sun, 7 Dec 2025 22:29:38 -0800 Message-ID: <20251208062943.68824-35-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251208062943.68824-1-sj@kernel.org> References: <20251208062943.68824-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 64FD5C0008 X-Rspam-User: X-Rspamd-Server: rspam12 X-Stat-Signature: 5kmmkq5txy3zhnyut4edzdtatdocwgxq X-HE-Tag: 1765175443-798716 X-HE-Meta: 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 C047fW4x 7tZCiiTRjHSUBwe2vz07sjeJagMc8h4MYZpHxUYySDuyEjMylReu4TgWJIcFaG3jAphOBytIU5GKw48A0Hsj2O5voV9EjWBfqwef7uQMSat2HRuzxIpFtw6vNof/7dPRL/H2SagMKyJnHXHHwXBkRwX2HS25YBWbdIMW9VAmT8MVGK1A8crTvkgs1lW7TZ8lcKvU8TtLmlyjoKLEFfHPR3cfuHQ== 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: List-Subscribe: List-Unsubscribe: The page fault event reporting function can know if the access was for writing or reading. Add the information to the report. Signed-off-by: SeongJae Park --- mm/damon/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index 782af39ef0c0..e2fd17b83a92 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1732,6 +1732,7 @@ void damon_report_page_fault(struct vm_fault *vmf, bool huge_pmd) .size = 1, /* todo: set appripriately */ .cpu = smp_processor_id(), .tid = task_pid_vnr(current), + .is_write = vmf->flags & FAULT_FLAG_WRITE, }; if (huge_pmd) -- 2.47.3