[PATCH] read_mapping_page for address space

Add read_mapping_page() which is used for callers that pass
mapping->a_ops->readpage as the filler for read_cache_page.  This removes
some duplication from filesystem code.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/mm/swapfile.c b/mm/swapfile.c
index f2824c3c31b4..cc367f7e75d8 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1477,8 +1477,7 @@ asmlinkage long sys_swapon(const char __user * specialfile, int swap_flags)
                 error = -EINVAL;
                 goto bad_swap;
         }
-        page = read_cache_page(mapping, 0,
-                        (filler_t *)mapping->a_ops->readpage, swap_file);
+        page = read_mapping_page(mapping, 0, swap_file);
         if (IS_ERR(page)) {
                 error = PTR_ERR(page);
                 goto bad_swap;