diff options
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index 33d8bbe24ddd..3cf9d77b3334 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -201,6 +201,9 @@ unsigned long move_page_tables(struct vm_area_struct *vma, unsigned long mmun_start; /* For mmu_notifiers */ unsigned long mmun_end; /* For mmu_notifiers */ + if (!len) + return 0; + old_end = old_addr + len; flush_cache_range(vma, old_addr, old_end); |