diff options
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 059839c..557f9b6 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -162,6 +162,10 @@ struct vm_area_struct { * linkage into the address_space->i_mmap prio tree, or * linkage to the list of like vmas hanging off its node, or * linkage of vma in the address_space->i_mmap_nonlinear list. + * + * For private anonymous mappings, a pointer to a null terminated string + * in the user process containing the name given to the vma, or NULL + * if unnamed. */ union { struct { @@ -171,6 +175,7 @@ struct vm_area_struct { } vm_set; struct raw_prio_tree_node prio_tree_node; + const char __user *anon_name; } shared; /* @@ -345,4 +350,14 @@ static inline cpumask_t *mm_cpumask(struct mm_struct *mm) return mm->cpu_vm_mask_var; } + +/* Return the name for an anonymous mapping or NULL for a file-backed mapping */ +static inline const char __user *vma_get_anon_name(struct vm_area_struct *vma) +{ + if (vma->vm_file) + return NULL; + + return vma->shared.anon_name; +} + #endif /* _LINUX_MM_TYPES_H */ |