From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-57-137.mail.qq.com (out162-62-57-137.mail.qq.com [162.62.57.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C08794EB87F for ; Tue, 29 Sep 2026 09:27:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.57.137 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790674062; cv=none; b=k8rRbL4j2xp+BLqmFQxJ0Iete8VN/yz0g5jAHz6bMFI3Rx2Db+zbl3Ig5IaV0cFs2onqC5vt/kiy9S9G9H5TohWYCLVq6hpGrU+ArAIAH+dsGeNMrOGtLQSNJ6shumzqNNtKYTmNXyj1y/B7VLMLVkWAHoheHE19fz/m59XDR98= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790674062; c=relaxed/simple; bh=j93BxfAGWJRlRwDQGHbijnMULy8q1YBGFG/QeFztJlE=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=nIJzROLBXqgvK/82CvpyUr8vSNMC5e0JCRygyV30shHyjwCLEXKnrmfsePzhJwN6rxytrrEnc3x1R6v0xnSIu2VopENKY+cISK4y79Qkvswj91ZsfpQIoq1ro/gHyYMbodDOiFSEnLffw7YRQ6vKEDTZq0e07Or/JM83ftvOjJ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=y6U+hzZo; arc=none smtp.client-ip=162.62.57.137 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="y6U+hzZo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1790674049; bh=AWUWyJ+l2DRWxplVbMpUfprXcHiO+Hhgpwu0TEAt2Ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=y6U+hzZowv/kQXd8zIXhFmREZFa55LBeSbfxK/Vg04f/Ev012G48P0Ze/zNpg7uKQ QdjFB3fLmQVjG9IdWaKkfK0N6S87t15yL4rpsr34RMei3oR0e3boYb4vpxVhfxDqzT p/NWNhvB5PkXfl2jnSjwUAdtJoRJlZneJnxthsVc= Received: from lzk-B860M-AORUS-PRO-WIFI7 ([2409:8a28:a83:5ba1:514f:5353:e14b:594e]) by newxmesmtplogicsvrsza53-0.qq.com (NewEsmtp) with SMTP id 6D804811; 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: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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