From 4fd840d1743308b2ef470534523009dd99b3ce2b Mon Sep 17 00:00:00 2001
From: Sami Tolvanen <samitolvanen@google.com>
Date: Wed, 16 Aug 2017 14:38:13 -0700
Subject: [PATCH] mm: fix filler function type mismatch

Bug: 67506682
Change-Id: I6f615164ccd86b407540ada9bbcb39d910395db9
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---
 fs/fuse/file.c          | 4 ++--
 include/linux/pagemap.h | 4 ++--
 mm/filemap.c            | 6 +++---
 mm/readahead.c          | 2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 996aa23c409e..c4353da0591d 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -839,9 +839,9 @@ struct fuse_fill_data {
 	unsigned nr_pages;
 };
 
-static int fuse_readpages_fill(void *_data, struct page *page)
+static int fuse_readpages_fill(struct file *_data, struct page *page)
 {
-	struct fuse_fill_data *data = _data;
+	struct fuse_fill_data *data = (struct fuse_fill_data *)_data;
 	struct fuse_req *req = data->req;
 	struct inode *inode = data->inode;
 	struct fuse_conn *fc = get_fuse_conn(inode);
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 7dbe9148b2f8..0741609bf4ab 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -225,7 +225,7 @@ static inline gfp_t readahead_gfp_mask(struct address_space *x)
 				  __GFP_COLD | __GFP_NORETRY | __GFP_NOWARN;
 }
 
-typedef int filler_t(void *, struct page *);
+typedef int filler_t(struct file *, struct page *);
 
 pgoff_t page_cache_next_hole(struct address_space *mapping,
 			     pgoff_t index, unsigned long max_scan);
@@ -369,7 +369,7 @@ extern int read_cache_pages(struct address_space *mapping,
 static inline struct page *read_mapping_page(struct address_space *mapping,
 				pgoff_t index, void *data)
 {
-	filler_t *filler = (filler_t *)mapping->a_ops->readpage;
+	filler_t *filler = mapping->a_ops->readpage;
 	return read_cache_page(mapping, index, filler, data);
 }
 
diff --git a/mm/filemap.c b/mm/filemap.c
index edfb90e3830c..14977f73eff7 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2388,7 +2388,7 @@ static struct page *wait_on_page_read(struct page *page)
 
 static struct page *do_read_cache_page(struct address_space *mapping,
 				pgoff_t index,
-				int (*filler)(void *, struct page *),
+				int (*filler)(struct file *, struct page *),
 				void *data,
 				gfp_t gfp)
 {
@@ -2495,7 +2495,7 @@ out:
  */
 struct page *read_cache_page(struct address_space *mapping,
 				pgoff_t index,
-				int (*filler)(void *, struct page *),
+				int (*filler)(struct file *, struct page *),
 				void *data)
 {
 	return do_read_cache_page(mapping, index, filler, data, mapping_gfp_mask(mapping));
@@ -2517,7 +2517,7 @@ struct page *read_cache_page_gfp(struct address_space *mapping,
 				pgoff_t index,
 				gfp_t gfp)
 {
-	filler_t *filler = (filler_t *)mapping->a_ops->readpage;
+	filler_t *filler = mapping->a_ops->readpage;
 
 	return do_read_cache_page(mapping, index, filler, NULL, gfp);
 }
diff --git a/mm/readahead.c b/mm/readahead.c
index c8a955b1297e..3c1d2a4612c8 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -81,7 +81,7 @@ static void read_cache_pages_invalidate_pages(struct address_space *mapping,
  * 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)(void *, struct page *), void *data)
+			int (*filler)(struct file *, struct page *), void *data)
 {
 	struct page *page;
 	int ret = 0;