Message ID | 20230117023335.1690727-40-Liam.Howlett@oracle.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Tue, 17 Jan 2023 02:34:59 +0000 Received: from SN6PR10MB3022.namprd10.prod.outlook.com ([fe80::a02:2ac8:ee3e:682]) by SN6PR10MB3022.namprd10.prod.outlook.com ([fe80::a02:2ac8:ee3e:682%4]) with mapi id 15.20.6002.012; Tue, 17 Jan 2023 02:34:59 +0000 From: Liam Howlett <liam.howlett@oracle.com> To: "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org> CC: Liam Howlett <liam.howlett@oracle.com>, Liam Howlett <liam.howlett@oracle.com> Subject: [PATCH v3 39/48] mm/mmap: move anon_vma setting in __vma_adjust() Thread-Topic: [PATCH v3 39/48] mm/mmap: move anon_vma setting in __vma_adjust() Thread-Index: AQHZKhw1UVetSQCxhEaEgbid8eLidQ== Date: Tue, 17 Jan 2023 02:34:22 +0000 Message-ID: <20230117023335.1690727-40-Liam.Howlett@oracle.com> References: <20230117023335.1690727-1-Liam.Howlett@oracle.com> In-Reply-To: <20230117023335.1690727-1-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 2.35.1 x-ms-publictraffictype: Email x-ms-traffictypediagnostic: SN6PR10MB3022:EE_|SJ0PR10MB4814:EE_ x-ms-office365-filtering-correlation-id: 85850537-0d3a-402d-dfe9-08daf8336da0 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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VMA tree type safety and remove __vma_adjust()
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expand
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diff --git a/mm/mmap.c b/mm/mmap.c index 434020155f8a..90638fa48734 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -685,6 +685,14 @@ int __vma_adjust(struct vma_iterator *vmi, struct vm_area_struct *vma, if (vma_iter_prealloc(vmi, vma)) return -ENOMEM; + anon_vma = vma->anon_vma; + if (!anon_vma && adjust_next) + anon_vma = next->anon_vma; + + if (anon_vma) + VM_WARN_ON(adjust_next && next->anon_vma && + anon_vma != next->anon_vma); + vma_adjust_trans_huge(orig_vma, start, end, adjust_next); if (file) { mapping = file->f_mapping; @@ -706,12 +714,7 @@ int __vma_adjust(struct vma_iterator *vmi, struct vm_area_struct *vma, } } - anon_vma = vma->anon_vma; - if (!anon_vma && adjust_next) - anon_vma = next->anon_vma; if (anon_vma) { - VM_WARN_ON(adjust_next && next->anon_vma && - anon_vma != next->anon_vma); anon_vma_lock_write(anon_vma); anon_vma_interval_tree_pre_update_vma(vma); if (adjust_next)