diff options
| -rw-r--r-- | mm/mmap.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index ffd6c6c9bcf..22dff49d579 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -657,9 +657,6 @@ again: remove_next = 1 + (end > next->vm_end); validate_mm(mm); } -/* Flags that can be inherited from an existing mapping when merging */ -#define VM_MERGEABLE_FLAGS (VM_CAN_NONLINEAR) - /* * If the vma has a ->close operation then the driver probably needs to release * per-vma resources, so we don't attempt to merge those. @@ -667,7 +664,8 @@ again: remove_next = 1 + (end > next->vm_end); static inline int is_mergeable_vma(struct vm_area_struct *vma, struct file *file, unsigned long vm_flags) { - if ((vma->vm_flags ^ vm_flags) & ~VM_MERGEABLE_FLAGS) + /* VM_CAN_NONLINEAR may get set later by f_op->mmap() */ + if ((vma->vm_flags ^ vm_flags) & ~VM_CAN_NONLINEAR) return 0; if (vma->vm_file != file) return 0; |