thp: fix page_referenced to modify mapcount/vm_flags only if page is found

[mv-sheeva.git] / mm / vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index f6754663632272cfc555cea9ae282575b9d163e4..f9b166732e70f44f703a8a510cb4d0c850bd30a0 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -748,7 +748,7 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask)
        va = alloc_vmap_area(VMAP_BLOCK_SIZE, VMAP_BLOCK_SIZE,
                                        VMALLOC_START, VMALLOC_END,
                                        node, gfp_mask);
-       if (unlikely(IS_ERR(va))) {
+       if (IS_ERR(va)) {
                kfree(vb);
                return ERR_CAST(va);
        }
@@ -1175,6 +1175,7 @@ void unmap_kernel_range_noflush(unsigned long addr, unsigned long size)
 {
        vunmap_page_range(addr, addr + size);
 }
+EXPORT_SYMBOL_GPL(unmap_kernel_range_noflush);
 
 /**
  * unmap_kernel_range - unmap kernel VM area and flush cache and TLB
@@ -1530,25 +1531,12 @@ fail:
        return NULL;
 }
 
-void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
-{
-       void *addr = __vmalloc_area_node(area, gfp_mask, prot, -1,
-                                        __builtin_return_address(0));
-
-       /*
-        * A ref_count = 3 is needed because the vm_struct and vmap_area
-        * structures allocated in the __get_vm_area_node() function contain
-        * references to the virtual address of the vmalloc'ed block.
-        */
-       kmemleak_alloc(addr, area->size - PAGE_SIZE, 3, gfp_mask);
-
-       return addr;
-}
-
 /**
- *     __vmalloc_node  -  allocate virtually contiguous memory
+ *     __vmalloc_node_range  -  allocate virtually contiguous memory
  *     @size:          allocation size
  *     @align:         desired alignment
+ *     @start:         vm area range start
+ *     @end:           vm area range end
  *     @gfp_mask:      flags for the page level allocator
  *     @prot:          protection mask for the allocated pages
  *     @node:          node to use for allocation or -1
@@ -1558,9 +1546,9 @@ void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
  *     allocator with @gfp_mask flags.  Map them into contiguous
  *     kernel virtual space, using a pagetable protection of @prot.
  */
-static void *__vmalloc_node(unsigned long size, unsigned long align,
-                           gfp_t gfp_mask, pgprot_t prot,
-                           int node, void *caller)
+void *__vmalloc_node_range(unsigned long size, unsigned long align,
+                       unsigned long start, unsigned long end, gfp_t gfp_mask,
+                       pgprot_t prot, int node, void *caller)
 {
        struct vm_struct *area;
        void *addr;
@@ -1570,8 +1558,8 @@ static void *__vmalloc_node(unsigned long size, unsigned long align,
        if (!size || (size >> PAGE_SHIFT) > totalram_pages)
                return NULL;
 
-       area = __get_vm_area_node(size, align, VM_ALLOC, VMALLOC_START,
-                                 VMALLOC_END, node, gfp_mask, caller);
+       area = __get_vm_area_node(size, align, VM_ALLOC, start, end, node,
+                                 gfp_mask, caller);
 
        if (!area)
                return NULL;
@@ -1588,6 +1576,27 @@ static void *__vmalloc_node(unsigned long size, unsigned long align,
        return addr;
 }
 
+/**
+ *     __vmalloc_node  -  allocate virtually contiguous memory
+ *     @size:          allocation size
+ *     @align:         desired alignment
+ *     @gfp_mask:      flags for the page level allocator
+ *     @prot:          protection mask for the allocated pages
+ *     @node:          node to use for allocation or -1
+ *     @caller:        caller's return address
+ *
+ *     Allocate enough pages to cover @size from the page level
+ *     allocator with @gfp_mask flags.  Map them into contiguous
+ *     kernel virtual space, using a pagetable protection of @prot.
+ */
+static void *__vmalloc_node(unsigned long size, unsigned long align,
+                           gfp_t gfp_mask, pgprot_t prot,
+                           int node, void *caller)
+{
+       return __vmalloc_node_range(size, align, VMALLOC_START, VMALLOC_END,
+                               gfp_mask, prot, node, caller);
+}
+
 void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
 {
        return __vmalloc_node(size, 1, gfp_mask, prot, -1,