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Mon, 9 Oct 2023 20:16:45 +0000 From: Sidhartha Kumar To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, maple-tree@lists.infradead.org Cc: akpm@linux-foundation.org, willy@infradead.org, liam.howlett@oracle.com, zhangpeng.00@bytedance.com, Sidhartha Kumar Subject: [PATCH 0/3] align maple tree write paths Date: Mon, 9 Oct 2023 13:16:36 -0700 Message-ID: <20231009201639.920512-1-sidhartha.kumar@oracle.com> X-Mailer: git-send-email 2.41.0 X-ClientProxiedBy: BY5PR04CA0029.namprd04.prod.outlook.com (2603:10b6:a03:1d0::39) To CH0PR10MB5113.namprd10.prod.outlook.com (2603:10b6:610:c9::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH0PR10MB5113:EE_|SA3PR10MB6998:EE_ X-MS-Office365-Filtering-Correlation-Id: 113e29e2-ba27-4b4e-58c6-08dbc904a88b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH0PR10MB5113.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366004)(136003)(39860400002)(376002)(346002)(396003)(230922051799003)(1800799009)(451199024)(64100799003)(186009)(86362001)(38100700002)(36756003)(6486002)(966005)(6512007)(2906002)(6666004)(478600001)(8936002)(44832011)(5660300002)(41300700001)(8676002)(6506007)(4326008)(107886003)(83380400001)(2616005)(1076003)(66946007)(66556008)(66476007)(316002);DIR:OUT;SFP:1101; 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Mon, 09 Oct 2023 13:17:43 -0700 (PDT) X-Spam-Level: ** X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779310437364697598 X-GMAIL-MSGID: 1779310437364697598 This series modifies the store paths in mas_store_gfp() and mas_erase() to use the newly refined preallocation calculation before their calls to mas_wr_store_entry(). This will avoid having to do worst case calculations. Patch 1 abstracts the calculation outside of mas_preallocate() so it can be used externally. Patch 2 modifies the write path in mas_store_gfp() to use preallocations and patch 3 does this in mas_erase(). The motivation for this series is part of the Maple Tree work list[1]. ========== TESTING ============== Testing was done with the maple tree test suite. maple_tree: 570172962 of 570172962 tests passed rebased on mm-unstable 10/09/23 [1]: https://lore.kernel.org/linux-mm/20230912172845.o54szwf33hc6p7ee@revolver/T/ Sidhartha Kumar (3): maple_tree: introduce mas_prealloc_calc() maple_tree: use preallocations in mas_store_gfp() maple_tree: use preallocations in mas_erase() lib/maple_tree.c | 128 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 88 insertions(+), 40 deletions(-)