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Mon, 17 Aug 2026 04:37:10 +0000 X-Migadu-Flow: FLOW_OUT From: Lance Yang To: nico.pache@linux.dev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, ziy@nvidia.com, baolin.wang@linux.alibaba.com, liam@infradead.org, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, usama.arif@linux.dev, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, corbet@lwn.net, skhan@linuxfoundation.org, Lance Yang Subject: Re: [PATCH v4 3/7] mm/khugepaged: introduce a count_collapse_event() helper Date: Mon, 17 Aug 2026 12:37:02 +0800 Message-Id: <20260817043702.83778-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20260811-khugepaged_pte_refactor-v4-3-ddac39d61c4a@linux.dev> References: <20260811-khugepaged_pte_refactor-v4-3-ddac39d61c4a@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 49BEC80004 X-Rspamd-Server: rspam10 X-Rspam-User: X-Stat-Signature: wiebmmaga8xc319o9pd9woxnx7u8q3yd X-HE-Tag: 1786941432-838200 X-HE-Meta: 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 YN5XT+TE rHeOpbL3KIVWCMOd58BIf4wHQByz56rer1j411dlIslPPxj0xQtM2fnunn2PJrOoS9yZ81+QIK1hwdAgMaVRS//VHxt/PHE8Eq26/jtxjV/mBChWvV1wU9kA1rmRcFAljAg0BLDIAIKt2zQJayjUD3phtx3VW3BKfbFqeRwfH3zxWqqeRfFvwl7ld9cxaU7u4S3IRY1MhRs6PfEdr/kBOBgvjDRLAxST6HEVEjtE99hApRQXb3Ct2dR2XOss1j1ERnAOnGAVv6D4KmyD77vFT2dKsSPFsrrg6DJxlgeZp5Tzq49UjPK4FUoda8cwEPR9V4HZcCk9wkekDWm7N8MuN1vZ3YCm3aLkKpdvGsv075scX9ruUEVFXOJzrXmhRZ7d+aMvw Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Aug 11, 2026 at 06:48:35AM -0600, Nico Pache (Red Hat) wrote: >Provide a simple helper function to help reduce a often used, and >duplicate pattern across the khugepaged code. > >When collapsing to a PMD we need to record a vm_event and the mTHP_stat >event. When doing mTHP collapse we only update the mTHP stat. > >Reviewed-by: Baolin Wang >Acked-by: David Hildenbrand (Arm) >Acked-by: Usama Arif >Signed-off-by: Nico Pache (Red Hat) >--- Reviewed-by: Lance Yang