filemap: convert some unsigned long to pgoff_t

Convert some 'unsigned long' to pgoff_t.

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 12 insertions, 11 deletions

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 8a83537d6978..862fc07dc6c0 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -84,11 +84,11 @@ static inline struct page *page_cache_alloc_cold(struct address_space *x)
 typedef int filler_t(void *, struct page *);
 
 extern struct page * find_get_page(struct address_space *mapping,
-                                unsigned long index);
+                                pgoff_t index);
 extern struct page * find_lock_page(struct address_space *mapping,
-                                unsigned long index);
+                                pgoff_t index);
 extern struct page * find_or_create_page(struct address_space *mapping,
-                                unsigned long index, gfp_t gfp_mask);
+                                pgoff_t index, gfp_t gfp_mask);
 unsigned find_get_pages(struct address_space *mapping, pgoff_t start,
                         unsigned int nr_pages, struct page **pages);
 unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t start,
@@ -99,41 +99,42 @@ unsigned find_get_pages_tag(struct address_space *mapping, pgoff_t *index,
 /*
  * Returns locked page at given index in given cache, creating it if needed.
  */
-static inline struct page *grab_cache_page(struct address_space *mapping, unsigned long index)
+static inline struct page *grab_cache_page(struct address_space *mapping,
+                                                                pgoff_t index)
 {
         return find_or_create_page(mapping, index, mapping_gfp_mask(mapping));
 }
 
 extern struct page * grab_cache_page_nowait(struct address_space *mapping,
-                                unsigned long index);
+                                pgoff_t index);
 extern struct page * read_cache_page_async(struct address_space *mapping,
-                                unsigned long index, filler_t *filler,
+                                pgoff_t index, filler_t *filler,
                                 void *data);
 extern struct page * read_cache_page(struct address_space *mapping,
-                                unsigned long index, filler_t *filler,
+                                pgoff_t index, filler_t *filler,
                                 void *data);
 extern int read_cache_pages(struct address_space *mapping,
                 struct list_head *pages, filler_t *filler, void *data);
 
 static inline struct page *read_mapping_page_async(
                                                 struct address_space *mapping,
-                                             unsigned long index, void *data)
+                                                     pgoff_t index, void *data)
 {
         filler_t *filler = (filler_t *)mapping->a_ops->readpage;
         return read_cache_page_async(mapping, index, filler, data);
 }
 
 static inline struct page *read_mapping_page(struct address_space *mapping,
-                                             unsigned long index, void *data)
+                                             pgoff_t index, void *data)
 {
         filler_t *filler = (filler_t *)mapping->a_ops->readpage;
         return read_cache_page(mapping, index, filler, data);
 }
 
 int add_to_page_cache(struct page *page, struct address_space *mapping,
-                                unsigned long index, gfp_t gfp_mask);
+                                pgoff_t index, gfp_t gfp_mask);
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-                                unsigned long index, gfp_t gfp_mask);
+                                pgoff_t index, gfp_t gfp_mask);
 extern void remove_from_page_cache(struct page *page);
 extern void __remove_from_page_cache(struct page *page);