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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9262E7C71B for ; Sun, 1 Feb 2026 12:26:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5BB276B008C; Sun, 1 Feb 2026 07:26:55 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 55C096B0092; Sun, 1 Feb 2026 07:26:55 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4299B6B0093; Sun, 1 Feb 2026 07:26:55 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 3307C6B008C for ; Sun, 1 Feb 2026 07:26:55 -0500 (EST) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id E39D68C8E3 for ; Sun, 1 Feb 2026 12:26:54 +0000 (UTC) X-FDA: 84395811948.26.D8A6FC7 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) by imf26.hostedemail.com (Postfix) with ESMTP id 09D80140003 for ; Sun, 1 Feb 2026 12:26:52 +0000 (UTC) Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b="WpVI/XVD"; spf=pass (imf26.hostedemail.com: domain of vernon2gm@gmail.com designates 209.85.210.175 as permitted sender) smtp.mailfrom=vernon2gm@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1769948813; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=sZwZ8lWYZ1YuosjYTvabOBDHoXCdZD0VZNoRi/PLmWs=; b=6iQA1R+VmPTKISqvnoLJp9yvwW7fkiuL6WuIP4EHAiBYd0NFu5x/p9kS25zTp3endh8kBk RS/eDboIbx+ikZAQeIfG8wktVU5eBnB6kYkaYWPa66R5b9nUxpt30rjfEFQ7H1NidTTNYb Jp2ILYqoXbGI0khhXCDzRoJ9L/hFmic= ARC-Authentication-Results: i=1; imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b="WpVI/XVD"; spf=pass (imf26.hostedemail.com: domain of vernon2gm@gmail.com designates 209.85.210.175 as permitted sender) smtp.mailfrom=vernon2gm@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1769948813; a=rsa-sha256; cv=none; b=A4KKT6w/MWlCLTFdgZzsr/GAMaQBXnlsnQEPN2bZTn2WDl168Xs7i7G8kMm/cXgxh933GL W+Cybag/5cYY53ml3PTH5HysKw3rvRXCJWsIQi9ZGnt/6Fr2PBQBIIyJteiuU7XjxC0HFc ZgXXWBF6PS3HXOQYW5NQYuMuiBVrkGc= Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-81f4c0e2b42so1952661b3a.1 for ; Sun, 01 Feb 2026 04:26:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769948812; x=1770553612; darn=kvack.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=sZwZ8lWYZ1YuosjYTvabOBDHoXCdZD0VZNoRi/PLmWs=; b=WpVI/XVD4ZnSpOgwqB/jDVLPu5MXfyA0K2DHA/WeWTgD7wuM6YRrXPhV135ONbD+KB KWup+hrMgK+iVYPm8ASUeLXonUTb+012RAQ+Zndr2At0TTCtRZGc6FZXBb0RvmxmYqeC MWNY5SVCjco+k0DxwyyUXgeaFN0Z59NW/aRpCHEw1Q/7cHi5t2nC2VSbVvsxps1JM/gk xGCGKP81DbNjBQdKNJHn0p0eT5rn+0tsuNNzpWNKI2tbxoECZL8/rjjn8woXiVmR7igg 4b8dLt37J+UZFs5WDG12dTD33Dk9TIvjzJQD2L0POWhPibUlKG/+eOdBCGOGTEcqh+s5 muyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769948812; x=1770553612; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=sZwZ8lWYZ1YuosjYTvabOBDHoXCdZD0VZNoRi/PLmWs=; b=YGtcXrkTlZ0HbrcNOQQvpKh1E6T8PZr8ISth0VJrDjvlfYaPkx+yqr4ba0tq8Oaf8E izgbnuI1+Wf2bvU9wajGnaulAmFmVpenpsgbGAQSJJ2wk6s/kKxD8l8vqBi176H0q/cu KTSJg8vVV/iAtnW/sVvEOXvlqq6FHWHy0g7nUcJWwD7cfCSa/zhNaCTCiAx291jN2U0I 66wVpU7Q1PtXmfptfa+MGGJGj72HGzIZipZ55AwkwBi1vt9cUWYG4SgEL2Ehsn3uKMaw ZD5QMuMHTYjFdVtNa9iwHN9xuNxCBNoGprQYAE9X9Mbv0ZYH5UZY6DyP/JOJRWjOPZ9o y+Iw== X-Forwarded-Encrypted: i=1; AJvYcCWc3m88rpzlS0JHTIbG1nCJuJm7FSsq0TeDOjuPagZkow25T4a8PHfC01nB7eaTkFstaG62beybkw==@kvack.org X-Gm-Message-State: AOJu0YxSX8ghE1KfaLrXCaLleqbmaBRi3Znt7ISipKvjMfICHkvpiDnx vVB5KCSx3P6V7tFh6Opihax45clXbCGpNkGDEFdEhGv3VcRucRW5fHmg X-Gm-Gg: AZuq6aLgOXi8713LArnR1S/XtKywEinIE+4vXBtwDlPReS2wONON0AaleprtZ9Nfmcf hQjiAPOJf0qJNmo45STPqn2uxGi0u0uQpfQf3RSth03Wq0XWoTRsW/5Ahu9neZsAFVde/Fu6SYv qrWTzBk+31hcEnXbROP4uptSTjgM6Zj6CVWMIT1RzD49M9+BPsSOGWEv8iXxI/+13TT77sfXHlR 5caxBCBiYn8k1Lgpog9bv11A0ltsxi4hLY+Q6PRueCiZjtQKxKBJ/hEXTX+RvtjCjW5pDj0ftyM UMXJJGwP2t3u3r0Rwrlu2qF+nqpQRg1B74HCS2CNcfBpwcLPxTub9ooPtHLLOYI6Ct+TKPfh/VG Y+x/T+ItRFrct2FepXQUKJk8czL/kOaBOYfvE9SIRU3M6V8sA470uvmeO85aiRoIY7egNIBbgjv WByAuf9QV4siRMmSF070lw9Rvt X-Received: by 2002:a05:6a20:7f98:b0:38e:8842:6683 with SMTP id adf61e73a8af0-392dffda013mr9289237637.5.1769948811817; Sun, 01 Feb 2026 04:26:51 -0800 (PST) Received: from localhost.localdomain ([114.231.118.96]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a88b6e5ac4sm116941185ad.86.2026.02.01.04.26.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Feb 2026 04:26:51 -0800 (PST) From: Vernon Yang To: akpm@linux-foundation.org, david@kernel.org Cc: lorenzo.stoakes@oracle.com, ziy@nvidia.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vernon Yang Subject: [PATCH mm-new v6 3/5] mm: add folio_test_lazyfree helper Date: Sun, 1 Feb 2026 20:25:52 +0800 Message-ID: <20260201122554.1470071-4-vernon2gm@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260201122554.1470071-1-vernon2gm@gmail.com> References: <20260201122554.1470071-1-vernon2gm@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 09D80140003 X-Stat-Signature: fib8d6tqs6ppne1nf5kx6hsp4744tzhu X-Rspam-User: X-HE-Tag: 1769948812-519679 X-HE-Meta: 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 wW3yz6R+ 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 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: From: Vernon Yang Add folio_test_lazyfree() function to identify lazy-free folios to improve code readability. Signed-off-by: Vernon Yang Acked-by: David Hildenbrand (Red Hat) Reviewed-by: Lance Yang Reviewed-by: Dev Jain Reviewed-by: Barry Song --- include/linux/page-flags.h | 5 +++++ mm/rmap.c | 2 +- mm/vmscan.c | 5 ++--- 3 files changed, 8 insertions(+), 4 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index f7a0e4af0c73..415e9f2ef616 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -724,6 +724,11 @@ static __always_inline bool folio_test_anon(const struct folio *folio) return ((unsigned long)folio->mapping & FOLIO_MAPPING_ANON) != 0; } +static __always_inline bool folio_test_lazyfree(const struct folio *folio) +{ + return folio_test_anon(folio) && !folio_test_swapbacked(folio); +} + static __always_inline bool PageAnonNotKsm(const struct page *page) { unsigned long flags = (unsigned long)page_folio(page)->mapping; diff --git a/mm/rmap.c b/mm/rmap.c index 618df3385c8b..ea55e12b3e87 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -2049,7 +2049,7 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, } if (!pvmw.pte) { - if (folio_test_anon(folio) && !folio_test_swapbacked(folio)) { + if (folio_test_lazyfree(folio)) { if (unmap_huge_pmd_locked(vma, pvmw.address, pvmw.pmd, folio)) goto walk_done; /* diff --git a/mm/vmscan.c b/mm/vmscan.c index 01d3364fe506..17d039bdbb53 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -963,8 +963,7 @@ static void folio_check_dirty_writeback(struct folio *folio, * They could be mistakenly treated as file lru. So further anon * test is needed. */ - if (!folio_is_file_lru(folio) || - (folio_test_anon(folio) && !folio_test_swapbacked(folio))) { + if (!folio_is_file_lru(folio) || folio_test_lazyfree(folio)) { *dirty = false; *writeback = false; return; @@ -1508,7 +1507,7 @@ static unsigned int shrink_folio_list(struct list_head *folio_list, } } - if (folio_test_anon(folio) && !folio_test_swapbacked(folio)) { + if (folio_test_lazyfree(folio)) { /* follow __remove_mapping for reference */ if (!folio_ref_freeze(folio, 1)) goto keep_locked; -- 2.51.0