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mm/memory.c: use helper macro min and max in unmap_mapping_range_tree()

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Use helper macro min and max to help simplify the code logic.  Minor
readability improvement.

Link: https://lkml.kernel.org/r/20220224121134.35068-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-03-22 14:42:33 -07:00 committed by Linus Torvalds
parent 88a359125a
commit f9871da927
1 changed files with 2 additions and 6 deletions
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8
mm/memory.c
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@ -3350,12 +3350,8 @@ static inline void unmap_mapping_range_tree(struct rb_root_cached *root,
vma_interval_tree_foreach(vma, root, first_index, last_index) { vma_interval_tree_foreach(vma, root, first_index, last_index) {
vba = vma->vm_pgoff; vba = vma->vm_pgoff;
vea = vba + vma_pages(vma) - 1; vea = vba + vma_pages(vma) - 1;
zba = first_index; zba = max(first_index, vba);
if (zba < vba) zea = min(last_index, vea);
zba = vba;
zea = last_index;
if (zea > vea)
zea = vea;
unmap_mapping_range_vma(vma, unmap_mapping_range_vma(vma,
((zba - vba) << PAGE_SHIFT) + vma->vm_start, ((zba - vba) << PAGE_SHIFT) + vma->vm_start,