[PATCH] Make address_space_operations->sync_page return void

The only user ignores the return value, and the only instanace
(block_sync_page) always returns 0...

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 7 insertions, 6 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 3b3ab5281920..0b9456fd074f 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3007,7 +3007,7 @@ out:
 }
 EXPORT_SYMBOL(try_to_free_buffers);
 
-int block_sync_page(struct page *page)
+void block_sync_page(struct page *page)
 {
         struct address_space *mapping;
 
@@ -3015,7 +3015,6 @@ int block_sync_page(struct page *page)
         mapping = page_mapping(page);
         if (mapping)
                 blk_run_backing_dev(mapping->backing_dev_info, page);
-        return 0;
 }
 
 /*
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 165d67426381..fb49aef1f2ec 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1339,7 +1339,7 @@ int cifs_fsync(struct file *file, struct dentry *dentry, int datasync)
         return rc;
 }
 
-/* static int cifs_sync_page(struct page *page)
+/* static void cifs_sync_page(struct page *page)
 {
         struct address_space *mapping;
         struct inode *inode;
@@ -1353,16 +1353,18 @@ int cifs_fsync(struct file *file, struct dentry *dentry, int datasync)
                 return 0;
         inode = mapping->host;
         if (!inode)
-                return 0; */
+                return; */
 
 /*      fill in rpages then 
         result = cifs_pagein_inode(inode, index, rpages); */ /* BB finish */
 
 /*      cFYI(1, ("rpages is %d for sync page of Index %ld ", rpages, index));
 
+#if 0
         if (rc < 0)
                 return rc;
         return 0;
+#endif
 } */
 
 /*
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 9f159baf153f..27dd97b3fce9 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -200,7 +200,7 @@ int cont_prepare_write(struct page*, unsigned, unsigned, get_block_t*,
 int generic_cont_expand(struct inode *inode, loff_t size);
 int generic_cont_expand_simple(struct inode *inode, loff_t size);
 int block_commit_write(struct page *page, unsigned from, unsigned to);
-int block_sync_page(struct page *);
+void block_sync_page(struct page *);
 sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
 int generic_commit_write(struct file *, struct page *, unsigned, unsigned);
 int block_truncate_page(struct address_space *, loff_t, get_block_t *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5adf32b90f36..972435d4df5c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -350,7 +350,7 @@ struct writeback_control;
 struct address_space_operations {
         int (*writepage)(struct page *page, struct writeback_control *wbc);
         int (*readpage)(struct file *, struct page *);
-        int (*sync_page)(struct page *);
+        void (*sync_page)(struct page *);
 
         /* Write back some dirty pages from this mapping. */
         int (*writepages)(struct address_space *, struct writeback_control *);