+// writepage inspired by/stolen from smbfs
+//
+
+static int yaffs_writepage(struct page *page)
+{
+ struct address_space *mapping = page->mapping;
+ struct inode *inode;
+ unsigned long end_index;
+ char *buffer;
+ yaffs_Object *obj;
+ int nWritten = 0;
+ unsigned nBytes;
+
+ if (!mapping)
+ BUG();
+ inode = mapping->host;
+ if (!inode)
+ BUG();
+
+ end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+
+ /* easy case */
+ if (page->index < end_index)
+ {
+ nBytes = PAGE_CACHE_SIZE;
+ }
+ else
+ {
+ nBytes = inode->i_size & (PAGE_CACHE_SIZE-1);
+ }
+ // What's happening here?
+ ///* OK, are we completely out? */
+ //if (page->index >= end_index+1 || !offset)
+ // return -EIO;
+
+ get_page(page);
+
+
+ buffer = kmap(page);
+
+ obj = yaffs_InodeToObject(inode);
+ yaffs_GrossLock(obj->myDev);
+
+
+ nWritten = yaffs_WriteDataToFile(obj,buffer,page->index << PAGE_CACHE_SHIFT,nBytes);
+
+ yaffs_GrossUnlock(obj->myDev);
+
+ kunmap(page);
+ SetPageUptodate(page);
+ UnlockPage(page);
+ put_page(page);
+
+ return (nWritten == nBytes) ? 0 : -ENOSPC;
+}
+
+