The ->pmd member record the pmd entry that maps the user PTE page
table page. When the pmd entry changes, ->pmd needs to be updated
synchronously.
Signed-off-by: Qi Zheng <[email protected]>
---
mm/mremap.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/mremap.c b/mm/mremap.c
index 088a7a75cb4b..4661cdec79dc 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -278,6 +278,7 @@ static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,
VM_BUG_ON(!pmd_none(*new_pmd));
pmd_populate(mm, new_pmd, pmd_pgtable(pmd));
+ pte_update_pmd(pmd, new_pmd);
flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
--
2.11.0