diff options
Diffstat (limited to 'include/linux/rmap.h')
| -rw-r--r-- | include/linux/rmap.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index af43cb9a0506..dc9b3c0bf5d4 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -81,6 +81,13 @@ static inline int anonvma_external_refcount(struct anon_vma *anon_vma) { return atomic_read(&anon_vma->external_refcount); } + +static inline void get_anon_vma(struct anon_vma *anon_vma) +{ + atomic_inc(&anon_vma->external_refcount); +} + +void drop_anon_vma(struct anon_vma *); #else static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) { @@ -90,6 +97,14 @@ static inline int anonvma_external_refcount(struct anon_vma *anon_vma) { return 0; } + +static inline void get_anon_vma(struct anon_vma *anon_vma) +{ +} + +static inline void drop_anon_vma(struct anon_vma *anon_vma) +{ +} #endif /* CONFIG_KSM */ static inline struct anon_vma *page_anon_vma(struct page *page) |