Message ID | 20221129164352.3374638-12-Liam.Howlett@oracle.com (mailing list archive) |
---|---|
State | New |
Headers | show
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VMA type safety through VMA iterator
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expand
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diff --git a/mm/mmap.c b/mm/mmap.c index e2701bc92c1e..fb9dd634b1ba 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -584,7 +584,7 @@ static int vma_link(struct mm_struct *mm, struct vm_area_struct *vma) * * Returns: 0 on success */ -inline int vma_expand(struct ma_state *mas, struct vm_area_struct *vma, +inline int vma_expand(struct vma_iterator *vmi, struct vm_area_struct *vma, unsigned long start, unsigned long end, pgoff_t pgoff, struct vm_area_struct *next) { @@ -613,7 +613,7 @@ inline int vma_expand(struct ma_state *mas, struct vm_area_struct *vma, /* Only handles expanding */ VM_BUG_ON(vma->vm_start < start || vma->vm_end > end); - if (mas_preallocate(mas, vma, GFP_KERNEL)) + if (vma_iter_prealloc(vmi, vma)) goto nomem; vma_adjust_trans_huge(vma, start, end, 0); @@ -638,8 +638,7 @@ inline int vma_expand(struct ma_state *mas, struct vm_area_struct *vma, vma->vm_start = start; vma->vm_end = end; vma->vm_pgoff = pgoff; - /* Note: mas must be pointing to the expanding VMA */ - vma_mas_store(vma, mas); + vma_iter_store(vmi, vma); if (file) { vma_interval_tree_insert(vma, root); @@ -2656,7 +2655,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr, /* Actually expand, if possible */ if (vma && - !vma_expand(&vmi.mas, vma, merge_start, merge_end, vm_pgoff, next)) { + !vma_expand(&vmi, vma, merge_start, merge_end, vm_pgoff, next)) { khugepaged_enter_vma(vma, vm_flags); goto expanded; }