From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 84BC4C7EE31 for ; Wed, 25 Jun 2025 16:31:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UrRQCjQ5jlerZdhk12+Q27kP0ZFsOCfu6LtqtVUtRc8=; b=uXOTyzRjKMkOsi h1QT5xt5qMBdr7oBtVMfW32xWBY7sjvEJ1CT8e8r325p+ZWyOzM7bZMrCzhrojXe/ORXo5HiV9V1m l/gTcvQ0Pt4TtjcN9M10BmBPnFXr3els8r7XJ0xnK5//JRkdfpjjsKIMcQRb1zvB9vodJHTA2V5R7 fRBn6gre29oyYA4i/rtXX/nD3dikCCMOh8VhcoUQ4mNh3/P2keuMdwRQuYfd4refFl7TC905LcNAe qSf5CU5b3qgfJ1Kwid3bn4EiSZiCiIr8mdJlocJQdOMnhLMRL/FV67fXuV63qDKJVKY+Q/eLLCCRf 14pl51MQAATGKHebhlsg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uUT2C-00000009JGB-1K13; Wed, 25 Jun 2025 16:31:40 +0000 Received: from out-183.mta0.migadu.com ([2001:41d0:1004:224b::b7]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uUP7q-00000008bZM-0ccD for linux-riscv@lists.infradead.org; Wed, 25 Jun 2025 12:21:15 +0000 Message-ID: <42f1d84f-2d17-43b7-8fa2-83322fcca44f@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1750854071; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wqF4hhowZcujiHY+iHQl6x5APphUIOsbur9usB3fHMI=; b=dbqPp1zP9dlPKWTDlI3t3zLN5/ONrptH3RYgCcrl9omGqZ7+bmrO3bJa0JRrkvhXraycoV elWuByVDPJUxyjtr6uiYD7om3L3B+0RvEw5odBoxkKBn51UWDL3LIG2VCW5LCytZ2sryAb zKos2fVOnRiQvX68sWQjMUop6cK7z4g= Date: Wed, 25 Jun 2025 20:20:59 +0800 MIME-Version: 1.0 Subject: Re: [PATCH v4 3/4] mm: Support batched unmap for lazyfree large folios during reclamation Content-Language: en-US To: David Hildenbrand Cc: akpm@linux-foundation.org, baolin.wang@linux.alibaba.com, chrisl@kernel.org, kasong@tencent.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, lorenzo.stoakes@oracle.com, ryan.roberts@arm.com, v-songbaohua@oppo.com, x86@kernel.org, ying.huang@intel.com, zhengtangquan@oppo.com, Lance Yang , Barry Song <21cnbao@gmail.com> References: <2c19a6cf-0b42-477b-a672-ed8c1edd4267@redhat.com> <20250624162503.78957-1-ioworker0@gmail.com> <27d174e0-c209-4851-825a-0baeb56df86f@redhat.com> <938c4726-b93e-46df-bceb-65c7574714a6@linux.dev> <5ba95609-302b-456a-a863-2bd5df51baf2@redhat.com> <6179dd30-5351-4a79-b0d6-f0e85650a926@redhat.com> <5db6fb4c-079d-4237-80b3-637565457f39@redhat.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Lance Yang In-Reply-To: <5db6fb4c-079d-4237-80b3-637565457f39@redhat.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250625_052114_331251_8C8FBA65 X-CRM114-Status: GOOD ( 17.13 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org CgpPbiAyMDI1LzYvMjUgMjA6MDksIERhdmlkIEhpbGRlbmJyYW5kIHdyb3RlOgo+Pgo+PiBTb21l aG93LCBJIGZlZWwgd2UgY291bGQgY29tYmluZSB5b3VyIGNsZWFudXAgY29kZeKAlHdoaWNoIGhh bmRsZXMgYSBiYXRjaAo+PiBzaXplIG9mICJuciIgYmV0d2VlbiAxIGFuZCBucl9wYWdlc+KAlHdp dGggdGhlCj4+ICJpZiAobnJfcGFnZXMgPT0gZm9saW9fbnJfcGFnZXMoZm9saW8pKSBnb3RvIHdh bGtfZG9uZSIgY2hlY2suCj4gCj4gWWVhaCwgdGhhdCdzIHdoYXQgSSB3YXMgc3VnZ2VzdGluZy4g SXQgd291bGQgaGF2ZSB0byBiZSBwYXJ0IG9mIHRoZSAKPiBjbGVhbnVwIEkgdGhpbmsuCj4gCj4g SSdtIHN0aWxsIHdvbmRlcmluZyBpZiB0aGVyZSBpcyBhIGNhc2Ugd2hlcmUKPiAKPiBpZiAobnJf cGFnZXMgPT0gZm9saW9fbnJfcGFnZXMoZm9saW8pKQo+ICDCoMKgwqDCoGdvdG8gd2Fsa19kb25l Owo+IAo+IHdvdWxkIGJlIHdyb25nIHdoZW4gZGVhbGluZyB3aXRoIHNtYWxsIGZvbGlvcy4KPiAK Pj4gSW4gcHJhY3RpY2UsIHRoaXMgd291bGQgbGV0IHVzIHNraXAgYWxtb3N0IGFsbCB1bm5lY2Vz c2FyeSBjaGVja3MsCj4+IGV4Y2VwdCBmb3IgYSBmZXcgcmFyZSBjb3JuZXIgY2FzZXMuCj4+Cj4+ IEZvciB0aG9zZSBjb3JuZXIgY2FzZXMgd2hlcmUgIm5yIiB0cnVseSBmYWxscyBiZXR3ZWVuIDEg YW5kIG5yX3BhZ2VzLAo+PiB3ZSBjYW4ganVzdCBsZWF2ZSB0aGVtIGFzLWlz4oCUcGVyZm9ybWlu ZyB0aGUgcmVkdW5kYW50IGNoZWNrIGluc2lkZQo+PiBwYWdlX3ZtYV9tYXBwZWRfd2FsaygpLgo+ IAo+IEkgbWVhbiwgYmF0Y2hpbmcgbWFwY291bnQrcmVmY291bnQgdXBkYXRlcyBldGMuIGlzIGFs d2F5cyBhIHdpbi4gSWYgd2UgCj4gZW5kIHVwIGRvaW5nIHNvbWUgdW5uZWNlc3NhcnkgcHRlX25v bmUoKSBjaGVja3MsIHRoYXQgbWlnaHQgYmUgCj4gc3Vib3B0aW1hbCBidXQgbW9zdGx5IG5vaXNl IGluIGNvbnRyYXN0IHRvIHRoZSBvdGhlciBzdHVmZiB3ZSB3aWxsIAo+IG9wdGltaXplIG91dCDw n5mCCj4gCj4gQWdyZWVkIHRoYXQgaWYgd2UgY2FuIGVhc2lseSBhdm9pZCB0aGVzZSBwdGVfbm9u ZSgpIGNoZWNrcywgd2Ugc2hvdWxkIGRvIAo+IHRoYXQuIE9wdGltaXppbmcgdGhhdCBmb3IgIm5y X3BhZ2VzID09IGZvbGlvX25yX3BhZ2VzKGZvbGlvKSIgbWFrZXMgc2Vuc2UuCgpIbW0uLi4gSSBo YXZlIGEgcXVlc3Rpb24gYWJvdXQgdGhlIHJlZmVyZW5jZSBjb3VudGluZyBoZXJlIC4uLgoKCQlp ZiAodm1hLT52bV9mbGFncyAmIFZNX0xPQ0tFRCkKCQkJbWxvY2tfZHJhaW5fbG9jYWwoKTsKCQlm b2xpb19wdXQoZm9saW8pOwoJCS8qIFdlIGhhdmUgYWxyZWFkeSBiYXRjaGVkIHRoZSBlbnRpcmUg Zm9saW8gKi8KCkRvZXMgYW55b25lIGVsc2Ugc3RpbGwgaG9sZCBhIHJlZmVyZW5jZSB0byB0aGlz IGZvbGlvIGFmdGVyIGZvbGlvX3B1dCgpPwoKCQlpZiAobnJfcGFnZXMgPT0gZm9saW9fbnJfcGFn ZXMoZm9saW8pKQoJCQlnb3RvIHdhbGtfZG9uZTsKCQljb250aW51ZTsKd2Fsa19hYm9ydDoKCQly ZXQgPSBmYWxzZTsKd2Fsa19kb25lOgoJCXBhZ2Vfdm1hX21hcHBlZF93YWxrX2RvbmUoJnB2bXcp OwoJCWJyZWFrOwoJfQoKVGhhbmtzLApMYW5jZQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNj dkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4v bGlzdGluZm8vbGludXgtcmlzY3YK