[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, 2 insertions, 4 deletions

diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c
index 1663f5c3c6aa..6708e1d68a9e 100644
--- a/fs/ntfs/attrib.c
+++ b/fs/ntfs/attrib.c
@@ -2529,8 +2529,7 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val)
         end >>= PAGE_CACHE_SHIFT;
         /* If there is a first partial page, need to do it the slow way. */
         if (start_ofs) {
-                page = read_cache_page(mapping, idx,
-                                (filler_t*)mapping->a_ops->readpage, NULL);
+                page = read_mapping_page(mapping, idx, NULL);
                 if (IS_ERR(page)) {
                         ntfs_error(vol->sb, "Failed to read first partial "
                                         "page (sync error, index 0x%lx).", idx);
@@ -2600,8 +2599,7 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val)
         }
         /* If there is a last partial page, need to do it the slow way. */
         if (end_ofs) {
-                page = read_cache_page(mapping, idx,
-                                (filler_t*)mapping->a_ops->readpage, NULL);
+                page = read_mapping_page(mapping, idx, NULL);
                 if (IS_ERR(page)) {
                         ntfs_error(vol->sb, "Failed to read last partial page "
                                         "(sync error, index 0x%lx).", idx);