4 files changed, 13 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 065cdf8c09fb..b1ea37fc7a24 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -104,6 +104,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_CAN_NONLINEAR 0x08000000     /* Has ->fault & does nonlinear pages */
 #define VM_MIXEDMAP     0x10000000      /* Can contain "struct page" and pure PFN pages */
 #define VM_SAO          0x20000000      /* Strong Access Ordering (powerpc) */
+#define VM_PFN_AT_MMAP  0x40000000      /* PFNMAP vma that is fully mapped at mmap time */
 
 #ifndef VM_STACK_DEFAULT_FLAGS          /* arch can override this */
 #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
@@ -145,7 +146,7 @@ extern pgprot_t protection_map[16];
  */
 static inline int is_linear_pfn_mapping(struct vm_area_struct *vma)
 {
-        return ((vma->vm_flags & VM_PFNMAP) && vma->vm_pgoff);
+        return (vma->vm_flags & VM_PFN_AT_MMAP);
 }
 
 static inline int is_pfn_mapping(struct vm_area_struct *vma)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 92915e81443f..d84feb7bdbf0 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -276,4 +276,7 @@ struct mm_struct {
 #endif
 };
 
+/* Future-safe accessor for struct mm_struct's cpu_vm_mask. */
+#define mm_cpumask(mm) (&(mm)->cpu_vm_mask)
+
 #endif /* _LINUX_MM_TYPES_H */
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 54a968b4b924..ee5615d65211 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -107,10 +107,14 @@ typedef void (*pcpu_populate_pte_fn_t)(unsigned long addr);
 
 extern size_t __init pcpu_setup_first_chunk(pcpu_get_page_fn_t get_page_fn,
                                 size_t static_size, size_t reserved_size,
-                                ssize_t unit_size, ssize_t dyn_size,
+                                ssize_t dyn_size, ssize_t unit_size,
                                 void *base_addr,
                                 pcpu_populate_pte_fn_t populate_pte_fn);
 
+extern ssize_t __init pcpu_embed_first_chunk(
+                                size_t static_size, size_t reserved_size,
+                                ssize_t dyn_size, ssize_t unit_size);
+
 /*
  * Use this to get to a cpu's version of the per-cpu object
  * dynamically allocated. Non-atomic access to the current CPU's
diff --git a/include/linux/sched.h b/include/linux/sched.h
index a7c7698583bb..46d680643f89 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1418,6 +1418,9 @@ struct task_struct {
 #endif
 };
 
+/* Future-safe accessor for struct task_struct's cpus_allowed. */
+#define tsk_cpumask(tsk) (&(tsk)->cpus_allowed)
+
 /*
  * Priority of a process goes from 0..MAX_PRIO-1, valid RT
  * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH