return ret;
}
+/*
+ * Return byte-offset into filesystem object for page.
+ */
+static inline loff_t page_offset(struct page *page)
+{
+ return ((loff_t)page->index) << PAGE_CACHE_SHIFT;
+}
+
static inline pgoff_t linear_page_index(struct vm_area_struct *vma,
unsigned long address)
{
static inline void lock_page(struct page *page)
{
+ might_sleep();
if (TestSetPageLocked(page))
__lock_page(page);
}