Fixing Android Net Test compilation

Reverting the below commits resolve the compilation error. The below
abandoned commits from upstream were pushed in to the QC kernel
repository which is causing Android Kernel Net Tests to fail.

"ANDROID: mm: fix filler function type mismatch" commit
"ANDROID: fs: fuse: fix filler function type mismatch" commit.

Change-Id: Id6da458fa838d741f4de234d61b6e39116dc186c
Signed-off-by: Arnav Sharma <arnav_s@codeaurora.org>
diff --git a/mm/readahead.c b/mm/readahead.c
index 4b47bef..4e63014 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -83,7 +83,7 @@
  * Hides the details of the LRU cache etc from the filesystems.
  */
 int read_cache_pages(struct address_space *mapping, struct list_head *pages,
-			int (*filler)(struct file *, struct page *), void *data)
+			int (*filler)(void *, struct page *), void *data)
 {
 	struct page *page;
 	int ret = 0;