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authorMiaohe Lin <linmiaohe@huawei.com>2022-03-23 00:42:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-23 01:57:05 +0300
commit0e6799db9672dcdc995b0f4bfa5cde4420868c93 (patch)
treebe4e04f5269f4ba0ac104464f6ce9db376a0f0ed /mm/mremap.c
parent360cd06173d6f139581b6b7cf322f66884860e0f (diff)
downloadlinux-0e6799db9672dcdc995b0f4bfa5cde4420868c93.tar.xz
mm/mremap:: use vma_lookup() instead of find_vma()
Using vma_lookup() verifies the address is contained in the found vma. This results in easier to read code. Link: https://lkml.kernel.org/r/20220312083118.48284-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mremap.c')
-rw-r--r--mm/mremap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index 002eec83e91e..9d76da79594d 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -942,8 +942,8 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
if (mmap_write_lock_killable(current->mm))
return -EINTR;
- vma = find_vma(mm, addr);
- if (!vma || vma->vm_start > addr) {
+ vma = vma_lookup(mm, addr);
+ if (!vma) {
ret = EFAULT;
goto out;
}