Use helper mlock_future_check to check whether it's safe to resize the
locked_vm to simplify the code. Minor readability improvement.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/mremap.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/mm/mremap.c b/mm/mremap.c
index 9d76da79594d..e776d4c2345c 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -763,14 +763,8 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
if (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP))
return ERR_PTR(-EFAULT);
- if (vma->vm_flags & VM_LOCKED) {
- unsigned long locked, lock_limit;
- locked = mm->locked_vm << PAGE_SHIFT;
- lock_limit = rlimit(RLIMIT_MEMLOCK);
- locked += new_len - old_len;
- if (locked > lock_limit && !capable(CAP_IPC_LOCK))
- return ERR_PTR(-EAGAIN);
- }
+ if (mlock_future_check(mm, vma->vm_flags, new_len - old_len))
+ return ERR_PTR(-EAGAIN);
if (!may_expand_vm(mm, vma->vm_flags,
(new_len - old_len) >> PAGE_SHIFT))
--
2.23.0
