diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm_types.h | 12 | ||||
| -rw-r--r-- | include/linux/sched.h | 11 | ||||
| -rw-r--r-- | include/linux/vmacache.h | 2 |
3 files changed, 17 insertions, 8 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 4f6d440ad785..137797cd7b50 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -360,6 +360,18 @@ struct vm_area_struct { struct vm_userfaultfd_ctx vm_userfaultfd_ctx; }; +/* + * The per task VMA cache array: + */ +#define VMACACHE_BITS 2 +#define VMACACHE_SIZE (1U << VMACACHE_BITS) +#define VMACACHE_MASK (VMACACHE_SIZE - 1) + +struct vmacache { + u32 seqnum; + struct vm_area_struct *vmas[VMACACHE_SIZE]; +}; + struct core_thread { struct task_struct *task; struct core_thread *next; diff --git a/include/linux/sched.h b/include/linux/sched.h index 3f61baac928b..e87c97e1a947 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -134,10 +134,6 @@ struct blk_plug; struct filename; struct nameidata; -#define VMACACHE_BITS 2 -#define VMACACHE_SIZE (1U << VMACACHE_BITS) -#define VMACACHE_MASK (VMACACHE_SIZE - 1) - /* * These are the constant used to fake the fixed-point load-average * counting. Some notes: @@ -1550,9 +1546,10 @@ struct task_struct { #endif struct mm_struct *mm, *active_mm; - /* per-thread vma caching */ - u32 vmacache_seqnum; - struct vm_area_struct *vmacache[VMACACHE_SIZE]; + + /* Per-thread vma caching: */ + struct vmacache vmacache; + #if defined(SPLIT_RSS_COUNTING) struct task_rss_stat rss_stat; #endif diff --git a/include/linux/vmacache.h b/include/linux/vmacache.h index c3fa0fd43949..1081db987391 100644 --- a/include/linux/vmacache.h +++ b/include/linux/vmacache.h @@ -12,7 +12,7 @@ static inline void vmacache_flush(struct task_struct *tsk) { - memset(tsk->vmacache, 0, sizeof(tsk->vmacache)); + memset(tsk->vmacache.vmas, 0, sizeof(tsk->vmacache.vmas)); } extern void vmacache_flush_all(struct mm_struct *mm); |