tree-wide: fix assorted typos all over the place

[safe/jmp/linux-2.6] / drivers / char / mspec.c

diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 04ac155..ecb89d7 100644 (file)
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -180,7 +180,7 @@ mspec_close(struct vm_area_struct *vma)
                my_page = vdata->maddr[index];
                vdata->maddr[index] = 0;
                if (!mspec_zero_block(my_page, PAGE_SIZE))
-                       uncached_free_page(my_page);
+                       uncached_free_page(my_page, 1);
                else
                        printk(KERN_WARNING "mspec_close(): "
                               "failed to zero page %ld\n", my_page);
@@ -193,32 +193,30 @@ mspec_close(struct vm_area_struct *vma)
 }
 
 /*
- * mspec_nopfn
+ * mspec_fault
  *
  * Creates a mspec page and maps it to user space.
  */
-static unsigned long
-mspec_nopfn(struct vm_area_struct *vma, unsigned long address)
+static int
+mspec_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
        unsigned long paddr, maddr;
        unsigned long pfn;
-       int index;
+       pgoff_t index = vmf->pgoff;
        struct vma_data *vdata = vma->vm_private_data;
 
-       BUG_ON(address < vdata->vm_start || address >= vdata->vm_end);
-       index = (address - vdata->vm_start) >> PAGE_SHIFT;
        maddr = (volatile unsigned long) vdata->maddr[index];
        if (maddr == 0) {
-               maddr = uncached_alloc_page(numa_node_id());
+               maddr = uncached_alloc_page(numa_node_id(), 1);
                if (maddr == 0)
-                       return NOPFN_OOM;
+                       return VM_FAULT_OOM;
 
                spin_lock(&vdata->lock);
                if (vdata->maddr[index] == 0) {
                        vdata->count++;
                        vdata->maddr[index] = maddr;
                } else {
-                       uncached_free_page(maddr);
+                       uncached_free_page(maddr, 1);
                        maddr = vdata->maddr[index];
                }
                spin_unlock(&vdata->lock);
@@ -231,19 +229,26 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address)
 
        pfn = paddr >> PAGE_SHIFT;
 
-       return pfn;
+       /*
+        * vm_insert_pfn can fail with -EBUSY, but in that case it will
+        * be because another thread has installed the pte first, so it
+        * is no problem.
+        */
+       vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
+
+       return VM_FAULT_NOPAGE;
 }
 
-static struct vm_operations_struct mspec_vm_ops = {
+static const struct vm_operations_struct mspec_vm_ops = {
        .open = mspec_open,
        .close = mspec_close,
-       .nopfn = mspec_nopfn
+       .fault = mspec_fault,
 };
 
 /*
  * mspec_mmap
  *
- * Called when mmaping the device.  Initializes the vma with a fault handler
+ * Called when mmapping the device.  Initializes the vma with a fault handler
  * and private data structure necessary to allocate, track, and free the
  * underlying pages.
  */
@@ -283,7 +288,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
        vdata->refcnt = ATOMIC_INIT(1);
        vma->vm_private_data = vdata;
 
-       vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP);
+       vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP | VM_DONTEXPAND);
        if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
                vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
        vma->vm_ops = &mspec_vm_ops;
@@ -362,12 +367,12 @@ mspec_init(void)
                is_sn2 = 1;
                if (is_shub2()) {
                        ret = -ENOMEM;
-                       for_each_online_node(nid) {
+                       for_each_node_state(nid, N_ONLINE) {
                                int actual_nid;
                                int nasid;
                                unsigned long phys;
 
-                               scratch_page[nid] = uncached_alloc_page(nid);
+                               scratch_page[nid] = uncached_alloc_page(nid, 1);
                                if (scratch_page[nid] == 0)
                                        goto free_scratch_pages;
                                phys = __pa(scratch_page[nid]);
@@ -414,7 +419,7 @@ mspec_init(void)
  free_scratch_pages:
        for_each_node(nid) {
                if (scratch_page[nid] != 0)
-                       uncached_free_page(scratch_page[nid]);
+                       uncached_free_page(scratch_page[nid], 1);
        }
        return ret;
 }
@@ -431,7 +436,7 @@ mspec_exit(void)
 
                for_each_node(nid) {
                        if (scratch_page[nid] != 0)
-                               uncached_free_page(scratch_page[nid]);
+                               uncached_free_page(scratch_page[nid], 1);
                }
        }
 }