@@ -807,6 +807,8 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
extern int vmtruncate(struct inode * inode, loff_t offset);
extern int vmtruncate_range(struct inode * inode, loff_t offset, loff_t end);
+
+extern struct vm_operations_struct revoked_vm_ops;
extern void remap_file_mappings(struct file *file, struct vm_operations_struct *vm_ops);
#ifdef CONFIG_MMU
@@ -2378,6 +2378,15 @@ out:
spin_lock(&mapping->i_mmap_lock);
}
+static int revoked_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+ return VM_FAULT_SIGBUS;
+}
+
+struct vm_operations_struct revoked_vm_ops = {
+ .fault = revoked_fault,
+};
+
void remap_file_mappings(struct file *file, struct vm_operations_struct *vm_ops)
{
/* After file->f_ops has been changed update the vmas */
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- include/linux/mm.h | 2 ++ mm/memory.c | 9 +++++++++ 2 files changed, 11 insertions(+), 0 deletions(-)