diff options
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index 3a3b40ee4b9c..118e71f5d27b 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -276,8 +276,13 @@ unsigned long do_mremap(unsigned long addr, ret = -ENOMEM; if (flags & MREMAP_MAYMOVE) { if (!(flags & MREMAP_FIXED)) { - new_addr = get_unmapped_area(0, new_len); - if (!new_addr) + unsigned long map_flags = 0; + if (vma->vm_flags & VM_SHARED) + map_flags |= MAP_SHARED; + + new_addr = get_unmapped_area(vma->vm_file, 0, new_len, vma->vm_pgoff, map_flags); + ret = new_addr; + if (new_addr & ~PAGE_MASK) goto out; } ret = move_vma(vma, addr, old_len, new_len, new_addr); |