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Wed, 28 Apr 2021 15:37:22 +0000 From: Liam Howlett To: "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton CC: Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse , Liam Howlett Subject: [PATCH 69/94] kernel/acct: Use maple tree iterators instead of linked list Thread-Topic: [PATCH 69/94] kernel/acct: Use maple tree iterators instead of linked list Thread-Index: AQHXPEQ9tY/56IFiC063oZwYqAVPwg== Date: Wed, 28 Apr 2021 15:36:22 +0000 Message-ID: <20210428153542.2814175-70-Liam.Howlett@Oracle.com> References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> In-Reply-To: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 authentication-results: lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=none action=none header.from=oracle.com; x-originating-ip: [23.233.25.87] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 7314be04-8273-4567-5206-08d90a5b83fa x-ms-traffictypediagnostic: CO1PR10MB4515: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:1303; 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Howlett --- kernel/acct.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/acct.c b/kernel/acct.c index a64102be2bb0..82c79cab4faf 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -534,16 +534,16 @@ void acct_collect(long exitcode, int group_dead) struct pacct_struct *pacct = ¤t->signal->pacct; u64 utime, stime; unsigned long vsize = 0; + MA_STATE(mas, ¤t->mm->mm_mt, 0, 0); if (group_dead && current->mm) { struct vm_area_struct *vma; mmap_read_lock(current->mm); - vma = current->mm->mmap; - while (vma) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) vsize += vma->vm_end - vma->vm_start; - vma = vma->vm_next; - } + rcu_read_unlock(); mmap_read_unlock(current->mm); }