Message ID | 20230105191517.3099082-19-Liam.Howlett@oracle.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Thu, 5 Jan 2023 19:16:01 +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 15.20.5944.019; Thu, 5 Jan 2023 19:16:01 +0000 From: Liam Howlett <liam.howlett@oracle.com> To: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org> CC: Liam Howlett <liam.howlett@oracle.com>, Liam Howlett <liam.howlett@oracle.com> Subject: [PATCH v2 18/44] mempolicy: Convert to vma iterator Thread-Topic: [PATCH v2 18/44] mempolicy: Convert to vma iterator Thread-Index: AQHZITojQR0bNu46JEWQV7nrYFuiYA== Date: Thu, 5 Jan 2023 19:15:57 +0000 Message-ID: <20230105191517.3099082-19-Liam.Howlett@oracle.com> References: <20230105191517.3099082-1-Liam.Howlett@oracle.com> In-Reply-To: <20230105191517.3099082-1-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_|IA1PR10MB6075:EE_ x-ms-office365-filtering-correlation-id: 33094665-4373-43d5-e008-08daef5148a5 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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Series |
VMA tree type safety and remove __vma_adjust()
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expand
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diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 02c8a712282f..6f41a30c24d5 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -787,24 +787,21 @@ static int vma_replace_policy(struct vm_area_struct *vma, static int mbind_range(struct mm_struct *mm, unsigned long start, unsigned long end, struct mempolicy *new_pol) { - MA_STATE(mas, &mm->mm_mt, start, start); + VMA_ITERATOR(vmi, mm, start); struct vm_area_struct *prev; struct vm_area_struct *vma; int err = 0; pgoff_t pgoff; - prev = mas_prev(&mas, 0); - if (unlikely(!prev)) - mas_set(&mas, start); - - vma = mas_find(&mas, end - 1); + prev = vma_prev(&vmi); + vma = vma_find(&vmi, end); if (WARN_ON(!vma)) return 0; if (start > vma->vm_start) prev = vma; - for (; vma; vma = mas_next(&mas, end - 1)) { + do { unsigned long vmstart = max(start, vma->vm_start); unsigned long vmend = min(end, vma->vm_end); @@ -813,29 +810,23 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, pgoff = vma->vm_pgoff + ((vmstart - vma->vm_start) >> PAGE_SHIFT); - prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags, + prev = vmi_vma_merge(&vmi, mm, prev, vmstart, vmend, vma->vm_flags, vma->anon_vma, vma->vm_file, pgoff, new_pol, vma->vm_userfaultfd_ctx, anon_vma_name(vma)); if (prev) { - /* vma_merge() invalidated the mas */ - mas_pause(&mas); vma = prev; goto replace; } if (vma->vm_start != vmstart) { - err = split_vma(vma->vm_mm, vma, vmstart, 1); + err = vmi_split_vma(&vmi, vma->vm_mm, vma, vmstart, 1); if (err) goto out; - /* split_vma() invalidated the mas */ - mas_pause(&mas); } if (vma->vm_end != vmend) { - err = split_vma(vma->vm_mm, vma, vmend, 0); + err = vmi_split_vma(&vmi, vma->vm_mm, vma, vmend, 0); if (err) goto out; - /* split_vma() invalidated the mas */ - mas_pause(&mas); } replace: err = vma_replace_policy(vma, new_pol); @@ -843,7 +834,7 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, goto out; next: prev = vma; - } + } for_each_vma_range(vmi, vma, end); out: return err;