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Tue, 29 Sep 2026 17:27:24 +0800 X-QQ-mid: xmsmtpt1790674044t61f9qe0i Message-ID: X-QQ-XMAILINFO: NG+oLgkBIWry3Wz4maLN7rRkyN41slc9JvtS1xFpKIhL57k1NV4x7PDHWi8WdX o99f03YS8qokgloaivFfemf3brjidrYniLNj7+KxYFNhw0/N9KVKX8GkuqHRb+re6xXkmIU5x27C X5jkJo5iGDhaezZ0jkbJNVDNXP3oTQD9fmVAd3LqwdV8IBezdHn/pcY/aMY7cFbHd/BvXhXapkPW UCEl/eIN0mAekh9Jfjn6t6x8et5fXKjVQ1TUOvztXip3ThfvBaiHrKKmnf1P09JG+iCxq252eLGM vS3J1QxzZffF1CHsBz5gLpW7mN30Zc1rrCXWf3/kLo1tKZweSS7KsGkJkh/6xoqL8AGjeKZsu7zV HBsOsp1tzyturg0vdJgFV1SZzHbjlsrz3edV6zJkhyCLHihNLSXmdEPMGRx/dtBPRtoAGH5VtHyQ kTLtKoEJoYQoOk337rRVtGGObqJhxKRZw6WaI9xmIy6YZmc+8BFo+h9evPVAjNLVUnRC7n5qqr1h tvzD+yDaETQVdVKaZvIRwrTrt5wnzxPbeWr+X1k2mXNv9VPyKFT4JHIfuZEd/+m5h4MlldUkxIFu SB3izGdEElpPErImYCgB7E6l6G25RIrtipqueulmDzPA6IHriiKKkJBDRnAhVK78rV8VokJ2u/Oz Exv0sGBIFoY0WoiBjU+WV3rgOWAbb1tqv2VhFNmDUQSR2SYz92mLMUP0tciXX758vUZtSesCsxXo ChFFeZ1sFeDKcKKjZsoWFEXlecDNu9KKy5DnvmyMOWxPOAm6xmJjydotxUEihoWKMrkWGiCOJI5Z Bk4hUE+kQ7PfVJYW6mjIqxL0QIRLMJEz7Fg126fbGnxjLXLdzV7ejO0UhmkCXmEXLpZ7mZWZk1LE 7T5OM32oytXF69Bu4fMDG2raTMAH8X/jkhxZc5hiItqSCM8bT4Il9qrOXbmWL06Ieufz+3KGzYrI GauRTZL+NZAC24JEPKWGdARnDtHgNr721bzXcb6ZX7D/JAadiueABo1sWIUyRJv+MF6HvTHVDzk+ dcUOYyCHvydM3x5qkRxJr+4F3oXORLCpQOU0NvPs8yEhetcP6osu1AXWc8krMaYxWdqez/HaTMgL laPnN9SD7iTiPEADADvS1cEkTWJXJ664WN6fJbJhkP7tMO4Qtoc6oM+/hd1W7mFGGL8NmCudsyFD 6HgFlNyPgZkduHYUWYQJYYu6fiULY9iCMKizI= X-QQ-XMRINFO: M/715EihBoGS47X28/vv4NpnfpeBLnr4Qg== From: Zongkun Lei To: David Hildenbrand Cc: Zongkun Lei , linux-mm@kvack.org, Andrew Morton , Muchun Song , Oscar Salvador , Peter Xu , Matthew Wilcox , Kairui Song , Michal Hocko , Johannes Weiner , Hugh Dickins , Naoya Horiguchi , Zi Yan , Lorenzo Stoakes , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 0/6] mm: swap support for hugetlb folios Date: Tue, 29 Sep 2026 17:26:30 +0800 X-OQ-MSGID: <20260929092720.544090-1-leizongkun@qq.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: mote68o7e9iuidgkupxcmf8tbucu1ri7 X-Rspamd-Queue-Id: B2FC420008 X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1790674053-750379 X-HE-Meta: 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 Y0g07bCf mmhpe4yshWrvEGoYGXLkU2LBb/RWzSpX0+KUKOaNWbLaRcutHxNUaR7L8QHKQOcdDWgXaQ9ijfDBoTz7AdEgTRk9mRKnqfR1plFn5kePRDAw5gm9G61Zlo27Y153z3xhhtg6aZCT+czCplBmBV6mw/t8zuqNStsVGs4w7554slc1AtTT8J4AWyYAQbDuxtnQaTX/Us7P/7CgmGwK/Bt8jCRJgldNG0A7QBFVo9iOd6KAG/CWOUTrYc7YahgYplBeMmvb6mjEOs/uAkjVqLFRhnJA5b6ONcvdSjxXY79WpF0O2wVg= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 29 Sep 2026 10:02:11 +0200, David Hildenbrand wrote: > Hugetlb is effectively in a feature freeze. There is no interest in > maintaining even more of the special hugetlb sauce, sorry. :/ Understood -- thank you for the direct answer. My mistake was misreading the subsystem's direction. I had read the earlier list discussions and concluded that the red line was touching hugetlb's reservation semantics, so I designed the whole series to keep them intact -- user-driven only, no LRU, no reclaim hooks. I see now that the actual position is a feature freeze: not "new features are welcome if reservations stay sacred", but no new features at all. Going forward I will stick to work that reduces hugetlb's divergence from generic code rather than adding to it, and I will float ideas on the list before putting serious effort into anything big. Thanks, Zongkun