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mm/mmap: use find_vma_intersection() in do_mmap() for overlap

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Using find_vma_intersection() avoids the need for a temporary variable and
makes the code cleaner.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Liam R. Howlett <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Liam Howlett
2021-06-29 10:53:51 -07:00
committed by Linus Torvalds
parent 96d990239e
commit 35e43c5ff4
1 changed files with 1 additions and 3 deletions
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mm/mmap.c
+1 -3
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@@ -1457,9 +1457,7 @@ unsigned long do_mmap(struct file *file, unsigned long addr,
return addr;
if (flags & MAP_FIXED_NOREPLACE) {
struct vm_area_struct *vma = find_vma(mm, addr);
if (vma && vma->vm_start < addr + len)
if (find_vma_intersection(mm, addr, addr + len))
return -EEXIST;
}