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dkim=pass header.d=oracle.com header.s=corp-2021-07-09 header.b=rJ7cniuX; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=eU0rcKKr; dmarc=pass (policy=none) header.from=oracle.com; spf=none (imf20.hostedemail.com: domain of liam.howlett@oracle.com has no SPF policy when checking 205.220.177.32) smtp.mailfrom=liam.howlett@oracle.com X-HE-Tag: 1644936281-34934 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Liam R. Howlett" Since there is no longer a linked list, the range_has_overlap() function is identical to the find_vma_intersection() function. Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka --- mm/mmap.c | 28 +--------------------------- 1 file changed, 1 insertion(+), 27 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index 9d2baf4871f2..d40caf26b018 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -432,30 +432,6 @@ anon_vma_interval_tree_post_update_vma(struct vm_area_= struct *vma) anon_vma_interval_tree_insert(avc, &avc->anon_vma->rb_root); } =20 -/* - * range_has_overlap() - Check the @start - @end range for overlapping VMA= s and - * sets up a pointer to the previous VMA - * @mm: the mm struct - * @start: the start address of the range - * @end: the end address of the range - * @pprev: the pointer to the pointer of the previous VMA - * - * Returns: True if there is an overlapping VMA, false otherwise - */ -static inline -bool range_has_overlap(struct mm_struct *mm, unsigned long start, - unsigned long end, struct vm_area_struct **pprev) -{ - struct vm_area_struct *existing; - - MA_STATE(mas, &mm->mm_mt, start, start); - rcu_read_lock(); - existing =3D mas_find(&mas, end - 1); - *pprev =3D mas_prev(&mas, 0); - rcu_read_unlock(); - return existing ? true : false; -} - static unsigned long count_vma_pages_range(struct mm_struct *mm, unsigned long addr, unsigned long end) { @@ -3206,9 +3182,7 @@ void exit_mmap(struct mm_struct *mm) */ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) { - struct vm_area_struct *prev; - - if (range_has_overlap(mm, vma->vm_start, vma->vm_end, &prev)) + if (find_vma_intersection(mm, vma->vm_start, vma->vm_end)) return -ENOMEM; =20 if ((vma->vm_flags & VM_ACCOUNT) && --=20 2.34.1