mm/vmalloc.c: change void* into explict vm_struct*

vmap_area->private is void* but we don't use the field for various purpose
but use only for vm_struct.  So change it to a vm_struct* with naming to
improve for readability and type checking.

Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 21fdf46ad5a..877ca046f43 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -256,7 +256,7 @@ struct vmap_area {
         struct rb_node rb_node;         /* address sorted rbtree */
         struct list_head list;          /* address sorted list */
         struct list_head purge_list;    /* "lazy purge" list */
-        void *private;
+        struct vm_struct *vm;
         struct rcu_head rcu_head;
 };
 
@@ -1285,7 +1285,7 @@ static void setup_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va,
         vm->addr = (void *)va->va_start;
         vm->size = va->va_end - va->va_start;
         vm->caller = caller;
-        va->private = vm;
+        va->vm = vm;
         va->flags |= VM_VM_AREA;
 }
 
@@ -1408,7 +1408,7 @@ static struct vm_struct *find_vm_area(const void *addr)
 
         va = find_vmap_area((unsigned long)addr);
         if (va && va->flags & VM_VM_AREA)
-                return va->private;
+                return va->vm;
 
         return NULL;
 }
@@ -1427,7 +1427,7 @@ struct vm_struct *remove_vm_area(const void *addr)
 
         va = find_vmap_area((unsigned long)addr);
         if (va && va->flags & VM_VM_AREA) {
-                struct vm_struct *vm = va->private;
+                struct vm_struct *vm = va->vm;
 
                 if (!(vm->flags & VM_UNLIST)) {
                         struct vm_struct *tmp, **p;