1 files changed, 4 insertions, 18 deletions

diff --git a/drivers/xen/privcmd-buf.c b/drivers/xen/privcmd-buf.c
index df1ed37c3269..de01a6d0059d 100644
--- a/drivers/xen/privcmd-buf.c
+++ b/drivers/xen/privcmd-buf.c
@@ -21,15 +21,9 @@
 
 MODULE_LICENSE("GPL");
 
-static unsigned int limit = 64;
-module_param(limit, uint, 0644);
-MODULE_PARM_DESC(limit, "Maximum number of pages that may be allocated by "
-                        "the privcmd-buf device per open file");
-
 struct privcmd_buf_private {
         struct mutex lock;
         struct list_head list;
-        unsigned int allocated;
 };
 
 struct privcmd_buf_vma_private {
@@ -60,13 +54,10 @@ static void privcmd_buf_vmapriv_free(struct privcmd_buf_vma_private *vma_priv)
 {
         unsigned int i;
 
-        vma_priv->file_priv->allocated -= vma_priv->n_pages;
-
         list_del(&vma_priv->list);
 
         for (i = 0; i < vma_priv->n_pages; i++)
-                if (vma_priv->pages[i])
-                        __free_page(vma_priv->pages[i]);
+                __free_page(vma_priv->pages[i]);
 
         kfree(vma_priv);
 }
@@ -146,8 +137,7 @@ static int privcmd_buf_mmap(struct file *file, struct vm_area_struct *vma)
         unsigned int i;
         int ret = 0;
 
-        if (!(vma->vm_flags & VM_SHARED) || count > limit ||
-            file_priv->allocated + count > limit)
+        if (!(vma->vm_flags & VM_SHARED))
                 return -EINVAL;
 
         vma_priv = kzalloc(sizeof(*vma_priv) + count * sizeof(void *),
@@ -155,19 +145,15 @@ static int privcmd_buf_mmap(struct file *file, struct vm_area_struct *vma)
         if (!vma_priv)
                 return -ENOMEM;
 
-        vma_priv->n_pages = count;
-        count = 0;
-        for (i = 0; i < vma_priv->n_pages; i++) {
+        for (i = 0; i < count; i++) {
                 vma_priv->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO);
                 if (!vma_priv->pages[i])
                         break;
-                count++;
+                vma_priv->n_pages++;
         }
 
         mutex_lock(&file_priv->lock);
 
-        file_priv->allocated += count;
-
         vma_priv->file_priv = file_priv;
         vma_priv->users = 1;