HID: tiny patch to remove a kmalloc cast

[sfrench/cifs-2.6.git] / mm / vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 1133dd3aafcf4c02e5b2d109b02f45013b7d9d11..86897ee792d6b4a2f8e00a94cf4b12e2c1d6f075 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -160,13 +160,15 @@ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
        return err;
 }
 
-struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
-                               unsigned long start, unsigned long end, int node)
+static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
+                                           unsigned long start, unsigned long end,
+                                           int node, gfp_t gfp_mask)
 {
        struct vm_struct **p, *tmp, *area;
        unsigned long align = 1;
        unsigned long addr;
 
+       BUG_ON(in_interrupt());
        if (flags & VM_IOREMAP) {
                int bit = fls(size);
 
@@ -179,16 +181,13 @@ struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
        }
        addr = ALIGN(start, align);
        size = PAGE_ALIGN(size);
+       if (unlikely(!size))
+               return NULL;
 
-       area = kmalloc_node(sizeof(*area), GFP_KERNEL, node);
+       area = kmalloc_node(sizeof(*area), gfp_mask & GFP_LEVEL_MASK, node);
        if (unlikely(!area))
                return NULL;
 
-       if (unlikely(!size)) {
-               kfree (area);
-               return NULL;
-       }
-
        /*
         * We always allocate a guard page.
         */
@@ -236,7 +235,7 @@ out:
 struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
                                unsigned long start, unsigned long end)
 {
-       return __get_vm_area_node(size, flags, start, end, -1);
+       return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL);
 }
 
 /**
@@ -253,9 +252,11 @@ struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
        return __get_vm_area(size, flags, VMALLOC_START, VMALLOC_END);
 }
 
-struct vm_struct *get_vm_area_node(unsigned long size, unsigned long flags, int node)
+struct vm_struct *get_vm_area_node(unsigned long size, unsigned long flags,
+                                  int node, gfp_t gfp_mask)
 {
-       return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END, node);
+       return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END, node,
+                                 gfp_mask);
 }
 
 /* Caller must hold vmlist_lock */
@@ -487,7 +488,7 @@ static void *__vmalloc_node(unsigned long size, gfp_t gfp_mask, pgprot_t prot,
        if (!size || (size >> PAGE_SHIFT) > num_physpages)
                return NULL;
 
-       area = get_vm_area_node(size, VM_ALLOC, node);
+       area = get_vm_area_node(size, VM_ALLOC, node, gfp_mask);
        if (!area)
                return NULL;
 
@@ -528,11 +529,12 @@ void *vmalloc_user(unsigned long size)
        void *ret;
 
        ret = __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
-       write_lock(&vmlist_lock);
-       area = __find_vm_area(ret);
-       area->flags |= VM_USERMAP;
-       write_unlock(&vmlist_lock);
-
+       if (ret) {
+               write_lock(&vmlist_lock);
+               area = __find_vm_area(ret);
+               area->flags |= VM_USERMAP;
+               write_unlock(&vmlist_lock);
+       }
        return ret;
 }
 EXPORT_SYMBOL(vmalloc_user);
@@ -601,11 +603,12 @@ void *vmalloc_32_user(unsigned long size)
        void *ret;
 
        ret = __vmalloc(size, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
-       write_lock(&vmlist_lock);
-       area = __find_vm_area(ret);
-       area->flags |= VM_USERMAP;
-       write_unlock(&vmlist_lock);
-
+       if (ret) {
+               write_lock(&vmlist_lock);
+               area = __find_vm_area(ret);
+               area->flags |= VM_USERMAP;
+               write_unlock(&vmlist_lock);
+       }
        return ret;
 }
 EXPORT_SYMBOL(vmalloc_32_user);