| From | "Liam R. Howlett" <> | Subject | [PATCH v2 23/70] mmap: Use find_vma_intersection in do_mmap() for overlap | Date | Tue, 12 Jan 2021 11:11:53 -0500 |
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When detecting a conflict with MAP_FIXED_NOREPLACE, using the new interface avoids the need for a temp variable
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> --- mm/mmap.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c index 8bc4ee7cc2fff..c0a64c4726b67 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1445,9 +1445,7 @@ 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; } -- 2.28.0
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