Message ID | 20230120162650.984577-40-Liam.Howlett@oracle.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Howlett" <Liam.Howlett@oracle.com> To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, maple-tree@lists.infradead.org Cc: "Liam R. Howlett" <Liam.Howlett@Oracle.com>, "Liam R . 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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/mmap.c b/mm/mmap.c index 56483b837ef9..b83c70c59a76 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)) 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)