--- cmsfs-1.1.7.orig/cmsfs24x.c 2003-03-04 11:56:17.000000000 -0600
+++ cmsfs-1.1.7/cmsfs24x.c      2003-07-17 03:06:14.000000000 -0500
@@ -463,6 +463,108 @@
         open:           cmsfs_file_open,
 };
 
+static int
+cmsfs_readpage( struct file *fi, struct page *pg )
+{
+    struct CMSINODE *ci;
+    unsigned long offset;
+    unsigned long needlen;
+    unsigned long blksz;
+    unsigned long rdblk;
+    unsigned long len;
+    void *buf;
+    char *ptr;
+    int result = -EIO;
+
+    ci = fi->f_dentry->d_inode->u.generic_ip;
+    if( ci->vfsinode != fi->f_dentry->d_inode )
+    {
+        sprintf( cmsfs_ermsg,
+                 "cmsfs_readpage(): CMS struct for inode %lu is corrupted",
+                 fi->f_dentry->d_inode->i_ino );
+        cmsfs_error( cmsfs_ermsg );
+        return result;
+    }
+
+    if( ci->recfm[ 0 ] != 'F' )
+    {
+        sprintf( cmsfs_ermsg,
+                 "cmsfs_readpage(): Record format not fixed" );
+        cmsfs_error( cmsfs_ermsg );
+        return result;
+    }
+
+    if( ci->rdbuf == NULL )
+    {
+        ci->rdbuf = cmsfs_malloc( ci->cmssuper->blksz );
+        if( ci->rdbuf == NULL )
+        {
+            cmsfs_error( "cmsfs_readpage(): unable to allocate a work buffer");
+            return result;
+        }
+    }
+
+#if CMSFS_DEBUG
+    sprintf( cmsfs_ermsg,
+             "cmsfs_readpage(): inode %lu, file '%s'",
+             fi->f_dentry->d_inode->i_ino,ci->name );
+    cmsfs_error( cmsfs_ermsg );
+#endif
+
+    page_cache_get( pg );
+    buf = kmap( pg );
+    if( buf )
+    {
+        offset = pg->index << PAGE_CACHE_SHIFT;
+        if( offset < ci->bytes )
+        {
+            blksz = ci->cmssuper->blksz;
+            rdblk = offset / blksz;
+            ptr = buf;
+        
+            needlen = PAGE_SIZE;
+            while( needlen > 0 )
+            {
+                if( cmsfsrd2( ci, ci->rdbuf, rdblk ) != blksz )
+                { 
+                    cmsfs_error( "cmsfs_read(): could not read block" );
+                    break;
+                }
+                len = min_t( unsigned long, needlen, blksz );
+
+                memcpy( ptr, ci->rdbuf, len );
+                ptr += len;
+                needlen -= len;
+                rdblk++;
+            }
+
+            if( needlen == 0 )
+            {
+                SetPageUptodate( pg );
+                result = 0;
+            }
+        }
+
+        if( result )
+        {
+            memset( buf, 0, PAGE_SIZE );
+            SetPageError( pg );
+        }
+
+        flush_dcache_page( pg );
+        UnlockPage( pg );
+        kunmap( pg );
+    }
+
+    page_cache_release( pg );
+
+    return result;
+}
+
+static struct address_space_operations cmsfs_aops = {
+        readpage: cmsfs_readpage
+};
+
 /* -------------------------------------------------- CMSFS_INODE_LOOKUP
  *  Search for the file in the CMS directory.
  *  Calls:  cmsfs_lookup() to find the file,
@@ -720,6 +822,7 @@
     cmsfs_error(cmsfs_ermsg);
 #endif
     cmssuper->inuse += ct;
+    in->i_data.a_ops = &cmsfs_aops;
 #ifdef  CMSFS_DEBUG
     (void) sprintf(cmsfs_ermsg,
         "cmsfs_read_inode(): CMS superblock usage now %d",