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 8005d0b2b843..8ce1b7632fbb 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -246,6 +246,9 @@ unsigned long move_page_tables(struct vm_area_struct *vma, struct mmu_notifier_range range; pmd_t *old_pmd, *new_pmd; + if (!len) + return 0; + old_end = old_addr + len; flush_cache_range(vma, old_addr, old_end); |