From patchwork Tue May 21 11:49:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Yang X-Patchwork-Id: 13668888 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53145C25B77 for ; Tue, 21 May 2024 03:41:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B08816B0092; Mon, 20 May 2024 23:41:48 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AB8436B0096; Mon, 20 May 2024 23:41:48 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 958B46B0098; Mon, 20 May 2024 23:41:48 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 766E16B0092 for ; Mon, 20 May 2024 23:41:48 -0400 (EDT) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id DDA47C0EC7 for ; Tue, 21 May 2024 03:41:47 +0000 (UTC) X-FDA: 82141003854.12.05A4343 Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-db3eur04on2050.outbound.protection.outlook.com [40.107.6.50]) by imf17.hostedemail.com (Postfix) with ESMTP id 2EF8B40016 for ; Tue, 21 May 2024 03:41:44 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=nxp.com header.s=selector2 header.b=hTjkG08T; spf=pass (imf17.hostedemail.com: domain of xu.yang_2@nxp.com designates 40.107.6.50 as permitted sender) smtp.mailfrom=xu.yang_2@nxp.com; dmarc=pass (policy=none) header.from=nxp.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1716262905; a=rsa-sha256; cv=pass; b=31VQqBBs6phXivz4+0Fjx2zoAC8Vxzu6ckoRSwa3Gu5qt6UDuscQGnLCqp7vk057F6Y7sA 7tMtU5Jbbq3h9C4uHIR75unEknGIaB9G5xbg3PeApO46ozotSqZrKquvTpeDgpTsfsyMxA f0c6wguUuddcHbwkS13z0eXwmd79Mlk= ARC-Authentication-Results: i=2; imf17.hostedemail.com; dkim=pass header.d=nxp.com header.s=selector2 header.b=hTjkG08T; spf=pass (imf17.hostedemail.com: domain of xu.yang_2@nxp.com designates 40.107.6.50 as permitted sender) smtp.mailfrom=xu.yang_2@nxp.com; dmarc=pass (policy=none) header.from=nxp.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1716262905; 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-type: content-transfer-encoding:content-transfer-encoding:in-reply-to: references:dkim-signature; bh=xoD4U5KT5tLz3wUrOl0GKj4h7wjVLs02V9P6S9Sa7+4=; b=rh8pBxY7UzMMlSP1yGxOa+AD+vs9jOadTlyuifCHEyhhAZ2s6OH7xcr7X19AflzGXQaA2c ZAwVXnPfoym/ClBa6cceDdqUR9QASNr7SFnkuvWUofxkV0APUpbgrn0zCTM6Y2+0qq69ZN coiD3+nGuwRzbWGZ2tyV0JqDyGYsx4w= ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KdvauhSZ4qLgTnl32v9stb7pL+AJtxsSdHWpih2OpUzpSBNR1q9bKtRZoL0FgTuFurWdPdhu+0wQE2Ce83gw3TASMfPZCqzRLZ8H5wMfJKsupgys3OJwzorgrdQTw0gLlQaPDnglgqtc6gS/YG+ODPptVEb2IONrGrSZUOls4LfFGbqHmtQ+azWP/coOsNA8KzziI9BKuNrGOSwUgPhlpVhAyk0OL2phRcPHGcCMampZS8QRApRGL3OayYv4HA8ItqNwRBdyJjUkrgrE362sVtcEencTMdKMkHQ2qsxX9rG5UE38Dl/4zhCQ4sx6aZQm3Jir9Ap25bX08fIPLMM86Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=xoD4U5KT5tLz3wUrOl0GKj4h7wjVLs02V9P6S9Sa7+4=; b=oaiV6SLZYhVumquoaFFAeyJKYTqkCT8vlMy1xpFv2wqcayxdFqYimdR7TmDdXauIfMHWdti4iboyu5Q529MiQXAxNGBpuBzKderFT6ZXMxc3h/MoCRyftWAlkgXrDvU1aGSjxCG08g0Y/a3arKvY0JQzWtVGUFx8hAaN3C0qMbXTXTKGwao6RYGuxcUET8FHyOl+BtgmQk8ONNIBLafoRkZfsV7mBITuJjbS7ukc4ipbUG7IU0jojihciRAdgasydggiQwFdl8qNIc7rxOKKqB1YBDh37dTs1pFz59ptyr7pVdgmmkQtn3RJxmBXhyr8919Xon2Wrse+LRPA7pABCw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=xoD4U5KT5tLz3wUrOl0GKj4h7wjVLs02V9P6S9Sa7+4=; b=hTjkG08TVrbSsn2gORJ8zEs2nmsnuvj/6/GcvURCJj3ntTsU33WaYmAYY4TvvnVQpgwsSRXe/QY2tU+FXh4HNKSgJYMWgRdWJgcHhmeGA/cSPuqXJJciTDp2UNy8+dRvPjKPQHYwEeBvhJC5RRTWYkadKEhBRNp49QaYQC9rM98= Received: from DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) by AM9PR04MB8212.eurprd04.prod.outlook.com (2603:10a6:20b:3b7::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7587.36; Tue, 21 May 2024 03:41:42 +0000 Received: from DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::8d2f:ac7e:966a:2f5f]) by DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::8d2f:ac7e:966a:2f5f%6]) with mapi id 15.20.7587.035; Tue, 21 May 2024 03:41:42 +0000 From: Xu Yang To: brauner@kernel.org, djwong@kernel.org, willy@infradead.org, akpm@linux-foundation.org Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, jun.li@nxp.com Subject: [PATCH v5 1/2] filemap: add helper mapping_max_folio_size() Date: Tue, 21 May 2024 19:49:38 +0800 Message-Id: <20240521114939.2541461-1-xu.yang_2@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SG3P274CA0016.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:be::28) To DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8822:EE_|AM9PR04MB8212:EE_ X-MS-Office365-Filtering-Correlation-Id: ef153253-185b-4de2-7431-08dc7947ee16 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|1800799015|52116005|376005|366007|38350700005; X-Microsoft-Antispam-Message-Info: 62iSDpyhjaKEEEaGGhgBQvd4WKW1jPkEyNFP4OZlw8ih6Gh4ntssEUrzer+TiUBFCGUxhfwOWg/PDcApjIv5WY8uAwPZi3ZzMr41dDbbFzyWXuMBGQmQJ1fhX55F5h2qS8cxlM6rs7bIEDXPAZPYdCougowmxYTgFW70N4XM4Iie9pu+RcAxbw6N9JVE63RSJqBnWQG9rhAM5kDJgDUTp6jmmYMPyJ6Qp5KxHyVGFFphMtAF7HbwouFz1Tr+8PTiDNcLcahq8FGcUDwwkuOfl30oJaLlQaG/uylcRFquim5XwNsyIpIEEuWUB5HCtKsDEjtJXkeGhYzm4XZo8dtUvdRkKXXRcM+A2gBy6vAqHZwAj8mUOZvUEvtouNbQxVbx+jldGH3MloSVnxedEeq1UTBHztIPUb9rzQGoAdxkk8mwZmkXdGoe45i7dqS6WFOkbXOKMG4ZZ/f5PIVztUpfm1tziA9iTJWkAmzNJQ7Aw6FSo9L2wxOmO/gm7eHX7nXZZOpGH3kc9IiHkcvp9Fej46Hlk+MifEUllc5D82da0H/NrOsekCvMJgf03uvVtsWwHWN/aCXyZAD6vJ2Drlu1k2HnSu187MuKHyiRSYpv2TlYOQv1lWATo72PeEuAJ3ssXYwujxi7eqUaDta2YimT91gzltGzl8L26zXBGSxiGfvvwqRQ6k3BkK5vbXdHVeVuCj/+IwhveHdywnEp8vbLUvrIU5OqRgFvbE5+6XqqlysQa0muYLgaA4SCvWik7j9yjZ/3hf9Jbt0LrdKQYZCLdqhIGnG1qmO0FOGpfaHibKNxMvK44AQskxBNhtFg+pH/BiYEw0kq5LcOynTp11N4eyEj7A5VgctqECaxI7eB9KLrkV7TSsolaPMGxp10zxC/px3t7mFa7EdhQtJf1PPclnR+lXZfh2Fh4xSz+hlYbStcbqWeJin8Q5/98OJMvhr8bM6BlTYZzFYZBYjLFmD4u+cB7uD8UJ2bcyYnqS4G4cHJtcLzXDq9Ugw0V60jpNv1KxHeRpo99djRUe8d0ZnenQADQQqKTAqrcSFuIunpFbso3yNlLi0xkhdWj/jLeYZmX+qBtLjJNa4U27LGILI6PwZr9wyzCrhz2I+32LU9+pw+AozZKmZ1BEqwnAv8bnt7tkORNxWH8Wf9HtAitkqcnSDKnzFqYW3HavDhAG+vuuLtZkamU7Mtl5RLJ4LDPRhxc57NFhpwTATPPTTlOlh93pWaCeF1h82Y5UbRqRwOeWa+U/azR7MZ48vs36B63DZXtzRxgx/y4JrgVpSwQMpwr8KfDsuKcT9sqLLkJq8xzZZnRtkvDghTQ5Jk15eiFkIO X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DU2PR04MB8822.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(1800799015)(52116005)(376005)(366007)(38350700005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: ef153253-185b-4de2-7431-08dc7947ee16 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8822.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 May 2024 03:41:42.5220 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: xY7871XynTdTnSjQtcIG6GrB8YJHXe/SJwB6WsB1ITXO+8W7/7HvNeskIS9ULwLqnIoOphTCpwaLZ/cU8hrVEA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR04MB8212 X-Rspamd-Queue-Id: 2EF8B40016 X-Rspam-User: X-Rspamd-Server: rspam12 X-Stat-Signature: y7xqgkjqmrdzwk3hsaet1gc4uwbdth7c X-HE-Tag: 1716262904-586025 X-HE-Meta: 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 E2hrn7NN ooGnoZQonZb/fI6VsZGF2jpqKzeflZjObYPbq9O0a0S5f7LSF9wHhyZu8RbY4nLXhpAoDDwEZKXRKiKNMQyuUL2rsZSMfTRK4YMNv9u1Qb2MzuDLZh2E4IZoX4jLVewXmFN2iBgH+t7CQIckwlmNZ5JcnOQxW/UgfTf+Gc7U9XgTzNDlFmBOBYOAVoJjGbeSMJK9vFgCPyi8B3Mt0fDq0+W1BtoOWDJF5Vd5vpiv/aoBtrQc4I7lkZkmIwSXB8QrQTnp/n+QslfoatEgM6s6T3ZUXiyznOvCcPK/3bN6g8O+ZILXycPpyr5QsGpe7Jjeb+mg26u58bICLDxdRhcc7CROw65y2Yek95Ex3psjREtKY2ASossRn8ZvoazG9X6U9RJ00+jpnnE0Ogig= 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: Add mapping_max_folio_size() to get the maximum folio size for this pagecache mapping. Fixes: 5d8edfb900d5 ("iomap: Copy larger chunks from userspace") Cc: stable@vger.kernel.org Reviewed-by: Darrick J. Wong Signed-off-by: Xu Yang Reviewed-by: Ritesh Harjani (IBM) Reviewed-by: Christoph Hellwig Reviewed-by: Matthew Wilcox (Oracle) --- Changes in v4: - split the mapping_max_folio_size() from v3 - adjust mapping_max_folio_size() comment - add Rb tag Changes in v5: - add fix tag and stable list --- include/linux/pagemap.h | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index c5e33e2ca48a..d43cf36bb68b 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -346,6 +346,19 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask) m->gfp_mask = mask; } +/* + * There are some parts of the kernel which assume that PMD entries + * are exactly HPAGE_PMD_ORDER. Those should be fixed, but until then, + * limit the maximum allocation order to PMD size. I'm not aware of any + * assumptions about maximum order if THP are disabled, but 8 seems like + * a good order (that's 1MB if you're using 4kB pages) + */ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define MAX_PAGECACHE_ORDER HPAGE_PMD_ORDER +#else +#define MAX_PAGECACHE_ORDER 8 +#endif + /** * mapping_set_large_folios() - Indicate the file supports large folios. * @mapping: The file. @@ -372,6 +385,14 @@ static inline bool mapping_large_folio_support(struct address_space *mapping) test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags); } +/* Return the maximum folio size for this pagecache mapping, in bytes. */ +static inline size_t mapping_max_folio_size(struct address_space *mapping) +{ + if (mapping_large_folio_support(mapping)) + return PAGE_SIZE << MAX_PAGECACHE_ORDER; + return PAGE_SIZE; +} + static inline int filemap_nr_thps(struct address_space *mapping) { #ifdef CONFIG_READ_ONLY_THP_FOR_FS @@ -530,19 +551,6 @@ static inline void *detach_page_private(struct page *page) return folio_detach_private(page_folio(page)); } -/* - * There are some parts of the kernel which assume that PMD entries - * are exactly HPAGE_PMD_ORDER. Those should be fixed, but until then, - * limit the maximum allocation order to PMD size. I'm not aware of any - * assumptions about maximum order if THP are disabled, but 8 seems like - * a good order (that's 1MB if you're using 4kB pages) - */ -#ifdef CONFIG_TRANSPARENT_HUGEPAGE -#define MAX_PAGECACHE_ORDER HPAGE_PMD_ORDER -#else -#define MAX_PAGECACHE_ORDER 8 -#endif - #ifdef CONFIG_NUMA struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order); #else