X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmremap.c;h=9c769fa29f32aff451ef6ff86ce836c1fc0bf856;hb=2dc20a51dc1e2da6eae1182cfe4c4835fca26017;hp=1903bdf65e428d88e5bf124243d99ee7ab7c51e3;hpb=0825788ff27c7145e9d558cb2a26f3837d1f9be5;p=linux-2.6

diff --git a/mm/mremap.c b/mm/mremap.c
index 1903bdf65e..9c769fa29f 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -97,7 +97,8 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
  	new_pte = pte_offset_map_nested(new_pmd, new_addr);
 	new_ptl = pte_lockptr(mm, new_pmd);
 	if (new_ptl != old_ptl)
-		spin_lock(new_ptl);
+		spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
+	arch_enter_lazy_mmu_mode();
 
 	for (; old_addr < old_end; old_pte++, old_addr += PAGE_SIZE,
 				   new_pte++, new_addr += PAGE_SIZE) {
@@ -109,6 +110,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
 		set_pte_at(mm, new_addr, new_pte, pte);
 	}
 
+	arch_leave_lazy_mmu_mode();
 	if (new_ptl != old_ptl)
 		spin_unlock(new_ptl);
 	pte_unmap_nested(new_pte - 1);