1 files changed, 10 insertions, 10 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index b5346576e58d..768687f1d46b 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -66,7 +66,7 @@ generic_file_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
  *
  *  ->mmap_sem
  *    ->i_mmap_lock
- *      ->page_table_lock       (various places, mainly in mmap.c)
+ *      ->page_table_lock or pte_lock   (various, mainly in memory.c)
  *        ->mapping->tree_lock  (arch-dependent flush_dcache_mmap_lock)
  *
  *  ->mmap_sem
@@ -86,9 +86,9 @@ generic_file_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
  *    ->anon_vma.lock           (vma_adjust)
  *
  *  ->anon_vma.lock
- *    ->page_table_lock         (anon_vma_prepare and various)
+ *    ->page_table_lock or pte_lock     (anon_vma_prepare and various)
  *
- *  ->page_table_lock
+ *  ->page_table_lock or pte_lock
  *    ->swap_lock               (try_to_unmap_one)
  *    ->private_lock            (try_to_unmap_one)
  *    ->tree_lock               (try_to_unmap_one)
@@ -152,7 +152,7 @@ static int sync_page(void *word)
          * in the ->sync_page() methods make essential use of the
          * page_mapping(), merely passing the page down to the backing
          * device's unplug functions when it's non-NULL, which in turn
-         * ignore it for all cases but swap, where only page->private is
+         * ignore it for all cases but swap, where only page_private(page) is
          * of interest. When page_mapping() does go NULL, the entire
          * call stack gracefully ignores the page and returns.
          * -- wli
@@ -377,7 +377,7 @@ int filemap_write_and_wait_range(struct address_space *mapping,
  * This function does not add the page to the LRU.  The caller must do that.
  */
 int add_to_page_cache(struct page *page, struct address_space *mapping,
-                pgoff_t offset, int gfp_mask)
+                pgoff_t offset, gfp_t gfp_mask)
 {
         int error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM);
 
@@ -401,7 +401,7 @@ int add_to_page_cache(struct page *page, struct address_space *mapping,
 EXPORT_SYMBOL(add_to_page_cache);
 
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-                                pgoff_t offset, int gfp_mask)
+                                pgoff_t offset, gfp_t gfp_mask)
 {
         int ret = add_to_page_cache(page, mapping, offset, gfp_mask);
         if (ret == 0)
@@ -591,7 +591,7 @@ EXPORT_SYMBOL(find_lock_page);
  * memory exhaustion.
  */
 struct page *find_or_create_page(struct address_space *mapping,
-                unsigned long index, unsigned int gfp_mask)
+                unsigned long index, gfp_t gfp_mask)
 {
         struct page *page, *cached_page = NULL;
         int err;
@@ -683,7 +683,7 @@ struct page *
 grab_cache_page_nowait(struct address_space *mapping, unsigned long index)
 {
         struct page *page = find_get_page(mapping, index);
-        unsigned int gfp_mask;
+        gfp_t gfp_mask;
 
         if (page) {
                 if (!TestSetPageLocked(page))
@@ -1520,7 +1520,7 @@ repeat:
                         page_cache_release(page);
                         return err;
                 }
-        } else {
+        } else if (vma->vm_flags & VM_NONLINEAR) {
                 /* No page was found just because we can't read it in now (being
                  * here implies nonblock != 0), but the page may exist, so set
                  * the PTE to fault it in later. */
@@ -1537,6 +1537,7 @@ repeat:
 
         return 0;
 }
+EXPORT_SYMBOL(filemap_populate);
 
 struct vm_operations_struct generic_file_vm_ops = {
         .nopage         = filemap_nopage,
@@ -1555,7 +1556,6 @@ int generic_file_mmap(struct file * file, struct vm_area_struct * vma)
         vma->vm_ops = &generic_file_vm_ops;
         return 0;
 }
-EXPORT_SYMBOL(filemap_populate);
 
 /*
  * This is for filesystems which do not implement ->writepage.