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-rw-r--r--mm/mmap.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index de2c1769cc68..234edffec1d0 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2943,9 +2943,19 @@ static const char *special_mapping_name(struct vm_area_struct *vma)
return ((struct vm_special_mapping *)vma->vm_private_data)->name;
}
+static int special_mapping_mremap(struct vm_area_struct *new_vma)
+{
+ struct vm_special_mapping *sm = new_vma->vm_private_data;
+
+ if (sm->mremap)
+ return sm->mremap(sm, new_vma);
+ return 0;
+}
+
static const struct vm_operations_struct special_mapping_vmops = {
.close = special_mapping_close,
.fault = special_mapping_fault,
+ .mremap = special_mapping_mremap,
.name = special_mapping_name,
};