1 files changed, 12 insertions, 17 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 13a54953a273..107454312d5e 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -752,7 +752,6 @@ struct vmap_block_queue {
 struct vmap_block {
         spinlock_t lock;
         struct vmap_area *va;
-        struct vmap_block_queue *vbq;
         unsigned long free, dirty;
         DECLARE_BITMAP(dirty_map, VMAP_BBMAP_BITS);
         struct list_head free_list;
@@ -830,7 +829,6 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask)
         radix_tree_preload_end();
 
         vbq = &get_cpu_var(vmap_block_queue);
-        vb->vbq = vbq;
         spin_lock(&vbq->lock);
         list_add_rcu(&vb->free_list, &vbq->free);
         spin_unlock(&vbq->lock);
@@ -1018,15 +1016,16 @@ void vm_unmap_aliases(void)
 
                 rcu_read_lock();
                 list_for_each_entry_rcu(vb, &vbq->free, free_list) {
-                        int i;
+                        int i, j;
 
                         spin_lock(&vb->lock);
                         i = find_first_bit(vb->dirty_map, VMAP_BBMAP_BITS);
-                        while (i < VMAP_BBMAP_BITS) {
+                        if (i < VMAP_BBMAP_BITS) {
                                 unsigned long s, e;
-                                int j;
-                                j = find_next_zero_bit(vb->dirty_map,
-                                        VMAP_BBMAP_BITS, i);
+
+                                j = find_last_bit(vb->dirty_map,
+                                                        VMAP_BBMAP_BITS);
+                                j = j + 1; /* need exclusive index */
 
                                 s = vb->va->va_start + (i << PAGE_SHIFT);
                                 e = vb->va->va_start + (j << PAGE_SHIFT);
@@ -1036,10 +1035,6 @@ void vm_unmap_aliases(void)
                                         start = s;
                                 if (e > end)
                                         end = e;
-
-                                i = j;
-                                i = find_next_bit(vb->dirty_map,
-                                                        VMAP_BBMAP_BITS, i);
                         }
                         spin_unlock(&vb->lock);
                 }
@@ -1263,7 +1258,7 @@ void unmap_kernel_range(unsigned long addr, unsigned long size)
 int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
 {
         unsigned long addr = (unsigned long)area->addr;
-        unsigned long end = addr + area->size - PAGE_SIZE;
+        unsigned long end = addr + get_vm_area_size(area);
         int err;
 
         err = vmap_page_range(addr, end, prot, *pages);
@@ -1558,7 +1553,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
         unsigned int nr_pages, array_size, i;
         gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
 
-        nr_pages = (area->size - PAGE_SIZE) >> PAGE_SHIFT;
+        nr_pages = get_vm_area_size(area) >> PAGE_SHIFT;
         array_size = (nr_pages * sizeof(struct page *));
 
         area->nr_pages = nr_pages;
@@ -1990,7 +1985,7 @@ long vread(char *buf, char *addr, unsigned long count)
 
                 vm = va->vm;
                 vaddr = (char *) vm->addr;
-                if (addr >= vaddr + vm->size - PAGE_SIZE)
+                if (addr >= vaddr + get_vm_area_size(vm))
                         continue;
                 while (addr < vaddr) {
                         if (count == 0)
@@ -2000,7 +1995,7 @@ long vread(char *buf, char *addr, unsigned long count)
                         addr++;
                         count--;
                 }
-                n = vaddr + vm->size - PAGE_SIZE - addr;
+                n = vaddr + get_vm_area_size(vm) - addr;
                 if (n > count)
                         n = count;
                 if (!(vm->flags & VM_IOREMAP))
@@ -2072,7 +2067,7 @@ long vwrite(char *buf, char *addr, unsigned long count)
 
                 vm = va->vm;
                 vaddr = (char *) vm->addr;
-                if (addr >= vaddr + vm->size - PAGE_SIZE)
+                if (addr >= vaddr + get_vm_area_size(vm))
                         continue;
                 while (addr < vaddr) {
                         if (count == 0)
@@ -2081,7 +2076,7 @@ long vwrite(char *buf, char *addr, unsigned long count)
                         addr++;
                         count--;
                 }
-                n = vaddr + vm->size - PAGE_SIZE - addr;
+                n = vaddr + get_vm_area_size(vm) - addr;
                 if (n > count)
                         n = count;
                 if (!(vm->flags & VM_IOREMAP)) {