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-rw-r--r--include/linux/pagemap.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index fb0814ca65c7..a6c78e00ea96 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -671,4 +671,10 @@ static inline int add_to_page_cache(struct page *page,
return error;
}
+static inline unsigned long dir_pages(struct inode *inode)
+{
+ return (unsigned long)(inode->i_size + PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
+}
+
#endif /* _LINUX_PAGEMAP_H */