defaults.{c,h}: _resume functions added

* cleaned up whitespace
* untabify

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1500 (Mount point should not be in-accessible between reconnect to server)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1500

1 files changed, 858 insertions, 938 deletions

diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
index 5aa0fad8937..d51cc8cca68 100644
--- a/libglusterfs/src/defaults.c
+++ b/libglusterfs/src/defaults.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (c) 2006-2009 Gluster, Inc. <http://www.gluster.com>
+  Copyright (c) 2006-2010 Gluster, Inc. <http://www.gluster.com>
   This file is part of GlusterFS.
 
   GlusterFS is free software; you can redistribute it and/or modify
@@ -18,11 +18,14 @@
 */
 
 /* libglusterfs/src/defaults.c:
-   This file contains functions, which are used to fill the 'fops' and 'mops'
+   This file contains functions, which are used to fill the 'fops', 'cbk'
    structures in the xlator structures, if they are not written. Here, all the
    function calls are plainly forwared to the first child of the xlator, and
    all the *_cbk function does plain STACK_UNWIND of the frame, and returns.
 
+   This function also implements *_resume () functions, which does same
+   operation as a fop().
+
    All the functions are plain enough to understand.
 */
 
@@ -33,1299 +36,1216 @@
 
 #include "xlator.h"
 
-static int32_t
-default_lookup_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-		    inode_t *inode,
-		    struct iatt *buf,
-                    dict_t *dict,
+/* _CBK function section */
+
+int32_t
+default_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, inode_t *inode,
+                    struct iatt *buf, dict_t *dict, struct iatt *postparent)
+{
+        STACK_UNWIND_STRICT (lookup, frame, op_ret, op_errno, inode, buf,
+                             dict, postparent);
+        return 0;
+}
+
+int32_t
+default_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                  int32_t op_ret, int32_t op_errno, struct iatt *buf)
+{
+        STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf);
+        return 0;
+}
+
+
+int32_t
+default_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                      struct iatt *postbuf)
+{
+        STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
+                             postbuf);
+        return 0;
+}
+
+int32_t
+default_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                       struct iatt *postbuf)
+{
+        STACK_UNWIND_STRICT (ftruncate, frame, op_ret, op_errno, prebuf,
+                             postbuf);
+        return 0;
+}
+
+int32_t
+default_access_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno)
+{
+        STACK_UNWIND_STRICT (access, frame, op_ret, op_errno);
+        return 0;
+}
+
+int32_t
+default_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, const char *path,
+                      struct iatt *buf)
+{
+        STACK_UNWIND_STRICT (readlink, frame, op_ret, op_errno, path, buf);
+        return 0;
+}
+
+
+int32_t
+default_mknod_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, inode_t *inode,
+                   struct iatt *buf, struct iatt *preparent,
+                   struct iatt *postparent)
+{
+        STACK_UNWIND_STRICT (mknod, frame, op_ret, op_errno, inode,
+                             buf, preparent, postparent);
+        return 0;
+}
+
+int32_t
+default_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, inode_t *inode,
+                   struct iatt *buf, struct iatt *preparent,
+                   struct iatt *postparent)
+{
+        STACK_UNWIND_STRICT (mkdir, frame, op_ret, op_errno, inode,
+                             buf, preparent, postparent);
+        return 0;
+}
+
+int32_t
+default_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, struct iatt *preparent,
                     struct iatt *postparent)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      inode,
-		      buf,
-                      dict,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (unlink, frame, op_ret, op_errno, preparent,
+                             postparent);
+        return 0;
 }
 
 int32_t
-default_lookup (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc,
-		dict_t *xattr_req)
+default_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                   struct iatt *postparent)
 {
-	STACK_WIND (frame,
-		    default_lookup_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->lookup,
-		    loc,
-		    xattr_req);
-	return 0;
+        STACK_UNWIND_STRICT (rmdir, frame, op_ret, op_errno, preparent,
+                             postparent);
+        return 0;
 }
 
 
 int32_t
-default_forget (xlator_t *this,
-		inode_t *inode)
+default_symlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, inode_t *inode,
+                     struct iatt *buf, struct iatt *preparent,
+                     struct iatt *postparent)
 {
-	return 0;
+        STACK_UNWIND_STRICT (symlink, frame, op_ret, op_errno, inode, buf,
+                             preparent, postparent);
+        return 0;
 }
 
-static int32_t
-default_stat_cbk (call_frame_t *frame,
-		  void *cookie,
-		  xlator_t *this,
-		  int32_t op_ret,
-		  int32_t op_errno,
-		  struct iatt *buf)
+
+int32_t
+default_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                    struct iatt *preoldparent, struct iatt *postoldparent,
+                    struct iatt *prenewparent, struct iatt *postnewparent)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      buf);
-	return 0;
+        STACK_UNWIND_STRICT (rename, frame, op_ret, op_errno, buf, preoldparent,
+                             postoldparent, prenewparent, postnewparent);
+        return 0;
 }
 
+
 int32_t
-default_stat (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc)
+default_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                  int32_t op_ret, int32_t op_errno, inode_t *inode,
+                  struct iatt *buf, struct iatt *preparent,
+                  struct iatt *postparent)
 {
-	STACK_WIND (frame,
-		    default_stat_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->stat,
-		    loc);
-	return 0;
+        STACK_UNWIND_STRICT (link, frame, op_ret, op_errno, inode, buf,
+                             preparent, postparent);
+        return 0;
 }
 
+
 int32_t
-default_truncate_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno,
-		      struct iatt *prebuf,
-                      struct iatt *postbuf)
+default_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, fd_t *fd, inode_t *inode,
+                    struct iatt *buf, struct iatt *preparent,
+                    struct iatt *postparent)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      prebuf,
-                      postbuf);
-	return 0;
+        STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
+                             preparent, postparent);
+        return 0;
 }
 
 int32_t
-default_truncate (call_frame_t *frame,
-		  xlator_t *this,
-		  loc_t *loc,
-		  off_t offset)
+default_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                  int32_t op_ret, int32_t op_errno, fd_t *fd)
 {
-	STACK_WIND (frame,
-		    default_truncate_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->truncate,
-		    loc,
-		    offset);
-	return 0;
+        STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd);
+        return 0;
 }
 
-static int32_t
-default_ftruncate_cbk (call_frame_t *frame,
-		       void *cookie,
-		       xlator_t *this,
-		       int32_t op_ret,
-		       int32_t op_errno,
-		       struct iatt *prebuf,
-                       struct iatt *postbuf)
+int32_t
+default_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct iovec *vector,
+                   int32_t count, struct iatt *stbuf, struct iobref *iobref)
+{
+        STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
+                             stbuf, iobref);
+        return 0;
+}
+
+
+int32_t
+default_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                    struct iatt *postbuf)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      prebuf,
-                      postbuf);
-	return 0;
+        STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf);
+        return 0;
 }
 
+
 int32_t
-default_ftruncate (call_frame_t *frame,
-		   xlator_t *this,
-		   fd_t *fd,
-		   off_t offset)
+default_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno)
 {
-	STACK_WIND (frame,
-		    default_ftruncate_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->ftruncate,
-		    fd,
-		    offset);
-	return 0;
+        STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno);
+        return 0;
 }
 
+
+
 int32_t
-default_access_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno)
+default_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                   struct iatt *postbuf)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf);
+        return 0;
 }
 
 int32_t
-default_access (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc,
-		int32_t mask)
+default_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct iatt *buf)
 {
-	STACK_WIND (frame,
-		    default_access_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->access,
-		    loc,
-		    mask);
-	return 0;
+        STACK_UNWIND_STRICT (fstat, frame, op_ret, op_errno, buf);
+        return 0;
 }
 
+int32_t
+default_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, fd_t *fd)
+{
+        STACK_UNWIND_STRICT (opendir, frame, op_ret, op_errno, fd);
+        return 0;
+}
 
 int32_t
-default_readlink_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno,
-		      const char *path,
-                      struct iatt *buf)
+default_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      path,
-                      buf);
-	return 0;
+        STACK_UNWIND_STRICT (fsyncdir, frame, op_ret, op_errno);
+        return 0;
 }
 
 int32_t
-default_readlink (call_frame_t *frame,
-		  xlator_t *this,
-		  loc_t *loc,
-		  size_t size)
+default_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, struct statvfs *buf)
 {
-	STACK_WIND (frame,
-		    default_readlink_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->readlink,
-		    loc,
-		    size);
-	return 0;
+        STACK_UNWIND_STRICT (statfs, frame, op_ret, op_errno, buf);
+        return 0;
 }
 
 
 int32_t
-default_mknod_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   inode_t *inode,
-                   struct iatt *buf,
-                   struct iatt *preparent,
-                   struct iatt *postparent)
+default_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      inode,
-                      buf,
-                      preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno);
+        return 0;
 }
 
 
-int
-default_mknod (call_frame_t *frame, xlator_t *this,
-	       loc_t *loc, mode_t mode, dev_t rdev, dict_t *parms)
+int32_t
+default_fsetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno)
 {
-	STACK_WIND (frame, default_mknod_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->mknod,
-		    loc, mode, rdev, parms);
-	return 0;
+        STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno);
+        return 0;
 }
 
+
+
 int32_t
-default_mkdir_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   inode_t *inode,
-                   struct iatt *buf,
-                   struct iatt *preparent,
-                   struct iatt *postparent)
+default_fgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno, dict_t *dict)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      inode,
-                      buf,
-                      preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, dict);
+        return 0;
 }
 
 
-int
-default_mkdir (call_frame_t *frame, xlator_t *this,
-	       loc_t *loc, mode_t mode, dict_t *params)
+int32_t
+default_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, dict_t *dict)
 {
-	STACK_WIND (frame, default_mkdir_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->mkdir,
-		    loc, mode, params);
-	return 0;
+        STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict);
+        return 0;
 }
 
 int32_t
-default_unlink_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-                    struct iatt *preparent,
-                    struct iatt *postparent)
+default_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, dict_t *dict)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent);
-	return 0;
+        STACK_UNWIND_STRICT (xattrop, frame, op_ret, op_errno, dict);
+        return 0;
 }
 
 int32_t
-default_unlink (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc)
+default_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, dict_t *dict)
 {
-	STACK_WIND (frame,
-		    default_unlink_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->unlink,
-		    loc);
-	return 0;
+        STACK_UNWIND_STRICT (fxattrop, frame, op_ret, op_errno, dict);
+        return 0;
 }
 
+
 int32_t
-default_rmdir_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-                   struct iatt *preparent,
-                   struct iatt *postparent)
+default_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno)
+{
+        STACK_UNWIND_STRICT (removexattr, frame, op_ret, op_errno);
+        return 0;
+}
+
+int32_t
+default_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                int32_t op_ret, int32_t op_errno, struct flock *lock)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-                      preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (lk, frame, op_ret, op_errno, lock);
+        return 0;
 }
 
 int32_t
-default_rmdir (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc)
+default_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno)
 {
-	STACK_WIND (frame,
-		    default_rmdir_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->rmdir,
-		    loc);
-	return 0;
+        STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno);
+        return 0;
 }
 
 
 int32_t
-default_symlink_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     inode_t *inode,
-                     struct iatt *buf,
-                     struct iatt *preparent,
-                     struct iatt *postparent)
+default_finodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno)
 {
-        STACK_UNWIND (frame, op_ret, op_errno, inode, buf, preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (finodelk, frame, op_ret, op_errno);
+        return 0;
 }
 
+int32_t
+default_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno)
+{
+        STACK_UNWIND_STRICT (entrylk, frame, op_ret, op_errno);
+        return 0;
+}
 
-int
-default_symlink (call_frame_t *frame, xlator_t *this,
-		 const char *linkpath, loc_t *loc, dict_t *params)
+int32_t
+default_fentrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno)
 {
-	STACK_WIND (frame, default_symlink_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->symlink,
-		    linkpath, loc, params);
-	return 0;
+        STACK_UNWIND_STRICT (fentrylk, frame, op_ret, op_errno);
+        return 0;
 }
 
 
 int32_t
-default_rename_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-		    struct iatt *buf,
-                    struct iatt *preoldparent,
-                    struct iatt *postoldparent,
-                    struct iatt *prenewparent,
-                    struct iatt *postnewparent)
+default_rchecksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno, uint32_t weak_checksum,
+                       uint8_t *strong_checksum)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, buf, preoldparent, postoldparent,
-                      prenewparent, postnewparent);
-	return 0;
+        STACK_UNWIND_STRICT (rchecksum, frame, op_ret, op_errno, weak_checksum,
+                             strong_checksum);
+        return 0;
 }
 
+
 int32_t
-default_rename (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *oldloc,
-		loc_t *newloc)
+default_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, gf_dirent_t *entries)
 {
-	STACK_WIND (frame,
-		    default_rename_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->rename,
-		    oldloc, newloc);
-	return 0;
+        STACK_UNWIND_STRICT (readdir, frame, op_ret, op_errno, entries);
+        return 0;
 }
 
 
 int32_t
-default_link_cbk (call_frame_t *frame,
-		  void *cookie,
-		  xlator_t *this,
-		  int32_t op_ret,
-		  int32_t op_errno,
-		  inode_t *inode,
-                  struct iatt *buf,
-                  struct iatt *preparent,
-                  struct iatt *postparent)
+default_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, gf_dirent_t *entries)
 {
-        STACK_UNWIND (frame, op_ret, op_errno, inode, buf, preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (readdirp, frame, op_ret, op_errno, entries);
+        return 0;
 }
 
 int32_t
-default_link (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *oldloc,
-	      loc_t *newloc)
+default_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, struct iatt *statpre,
+                     struct iatt *statpost)
 {
-	STACK_WIND (frame,
-		    default_link_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->link,
-		    oldloc, newloc);
-	return 0;
+        STACK_UNWIND_STRICT (setattr, frame, op_ret, op_errno, statpre,
+                             statpost);
+        return 0;
 }
 
+int32_t
+default_fsetattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, struct iatt *statpre,
+                      struct iatt *statpost)
+{
+        STACK_UNWIND_STRICT (fsetattr, frame, op_ret, op_errno, statpre,
+                             statpost);
+        return 0;
+}
 
 int32_t
-default_create_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-		    fd_t *fd,
-		    inode_t *inode,
-		    struct iatt *buf,
-                    struct iatt *preparent,
-                    struct iatt *postparent)
+default_getspec_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, char *spec_data)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf, preparent,
-                      postparent);
-	return 0;
+        STACK_UNWIND_STRICT (getspec, frame, op_ret, op_errno, spec_data);
+        return 0;
 }
 
+/* RESUME */
+
 int32_t
-default_create (call_frame_t *frame, xlator_t *this,
-		loc_t *loc, int32_t flags, mode_t mode,
-                fd_t *fd, dict_t *params)
+default_fgetxattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                          const char *name)
 {
-	STACK_WIND (frame, default_create_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->create,
-		    loc, flags, mode, fd, params);
-	return 0;
+        STACK_WIND (frame, default_fgetxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fgetxattr, fd, name);
+        return 0;
 }
 
 int32_t
-default_open_cbk (call_frame_t *frame,
-		  void *cookie,
-		  xlator_t *this,
-		  int32_t op_ret,
-		  int32_t op_errno,
-		  fd_t *fd)
+default_fsetxattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                          dict_t *dict, int32_t flags)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      fd);
-	return 0;
+        STACK_WIND (frame, default_fsetxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags);
+        return 0;
 }
 
 int32_t
-default_open (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc,
-	      int32_t flags, fd_t *fd,
-              int32_t wbflags)
+default_setxattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                         dict_t *dict, int32_t flags)
 {
-	STACK_WIND (frame,
-		    default_open_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->open,
-		    loc, flags, fd, wbflags);
-	return 0;
+        STACK_WIND (frame, default_setxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->setxattr, loc, dict, flags);
+        return 0;
 }
 
 int32_t
-default_readv_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   struct iovec *vector,
-		   int32_t count,
-		   struct iatt *stbuf,
-                   struct iobref *iobref)
+default_statfs_resume (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      vector,
-		      count,
-		      stbuf,
-                      iobref);
-	return 0;
+        STACK_WIND (frame, default_statfs_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->statfs, loc);
+        return 0;
 }
 
 int32_t
-default_readv (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd,
-	       size_t size,
-	       off_t offset)
+default_fsyncdir_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                         int32_t flags)
 {
-	STACK_WIND (frame,
-		    default_readv_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->readv,
-		    fd,
-		    size,
-		    offset);
-	return 0;
+        STACK_WIND (frame, default_fsyncdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsyncdir, fd, flags);
+        return 0;
 }
 
+int32_t
+default_opendir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                        fd_t *fd)
+{
+        STACK_WIND (frame, default_opendir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->opendir, loc, fd);
+        return 0;
+}
 
 int32_t
-default_writev_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-                    struct iatt *prebuf,
-		    struct iatt *postbuf)
+default_fstat_resume (call_frame_t *frame, xlator_t *this, fd_t *fd)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-                      prebuf,
-		      postbuf);
-	return 0;
+        STACK_WIND (frame, default_fstat_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fstat, fd);
+        return 0;
 }
 
 int32_t
-default_writev (call_frame_t *frame,
-		xlator_t *this,
-		fd_t *fd,
-		struct iovec *vector,
-		int32_t count,
-		off_t off,
-                struct iobref *iobref)
+default_fsync_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                      int32_t flags)
 {
-	STACK_WIND (frame,
-		    default_writev_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->writev,
-		    fd,
-		    vector,
-		    count,
-		    off,
+        STACK_WIND (frame, default_fsync_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsync, fd, flags);
+        return 0;
+}
+
+int32_t
+default_flush_resume (call_frame_t *frame, xlator_t *this, fd_t *fd)
+{
+        STACK_WIND (frame, default_flush_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->flush, fd);
+        return 0;
+}
+
+int32_t
+default_writev_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                       struct iovec *vector, int32_t count, off_t off,
+                       struct iobref *iobref)
+{
+        STACK_WIND (frame, default_writev_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->writev, fd, vector, count, off,
                     iobref);
-	return 0;
+        return 0;
 }
 
-static int32_t
-default_flush_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno)
+int32_t
+default_readv_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                      size_t size, off_t offset)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_WIND (frame, default_readv_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readv, fd, size, offset);
+        return 0;
 }
 
+
 int32_t
-default_flush (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd)
+default_open_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                     int32_t flags, fd_t *fd, int32_t wbflags)
 {
-	STACK_WIND (frame,
-		    default_flush_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->flush,
-		    fd);
-	return 0;
+        STACK_WIND (frame, default_open_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->open, loc, flags, fd, wbflags);
+        return 0;
 }
 
+int32_t
+default_create_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                       int32_t flags, mode_t mode, fd_t *fd, dict_t *params)
+{
+        STACK_WIND (frame, default_create_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->create, loc, flags, mode, fd,
+                    params);
+        return 0;
+}
 
-static int32_t
-default_fsync_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-                   struct iatt *prebuf,
-                   struct iatt *postbuf)
+int32_t
+default_link_resume (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
+                     loc_t *newloc)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-                      prebuf,
-                      postbuf);
-	return 0;
+        STACK_WIND (frame, default_link_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->link, oldloc, newloc);
+        return 0;
 }
 
 int32_t
-default_fsync (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd,
-	       int32_t flags)
+default_rename_resume (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
+                       loc_t *newloc)
 {
-	STACK_WIND (frame,
-		    default_fsync_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fsync,
-		    fd,
-		    flags);
-	return 0;
+        STACK_WIND (frame, default_rename_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rename, oldloc, newloc);
+        return 0;
 }
 
-static int32_t
-default_fstat_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   struct iatt *buf)
+
+int
+default_symlink_resume (call_frame_t *frame, xlator_t *this,
+                        const char *linkpath, loc_t *loc, dict_t *params)
+{
+        STACK_WIND (frame, default_symlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->symlink, linkpath, loc, params);
+        return 0;
+}
+
+int32_t
+default_rmdir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc)
+{
+        STACK_WIND (frame, default_rmdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rmdir, loc);
+        return 0;
+}
+
+int32_t
+default_unlink_resume (call_frame_t *frame, xlator_t *this, loc_t *loc)
+{
+        STACK_WIND (frame, default_unlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->unlink, loc);
+        return 0;
+}
+
+int
+default_mkdir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                      mode_t mode, dict_t *params)
+{
+        STACK_WIND (frame, default_mkdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->mkdir, loc, mode, params);
+        return 0;
+}
+
+
+int
+default_mknod_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                      mode_t mode, dev_t rdev, dict_t *parms)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      buf);
-	return 0;
+        STACK_WIND (frame, default_mknod_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->mknod, loc, mode, rdev, parms);
+        return 0;
 }
 
 int32_t
-default_fstat (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd)
+default_readlink_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                         size_t size)
 {
-	STACK_WIND (frame,
-		    default_fstat_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fstat,
-		    fd);
-	return 0;
+        STACK_WIND (frame, default_readlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readlink, loc, size);
+        return 0;
 }
 
+
 int32_t
-default_opendir_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     fd_t *fd)
+default_access_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                       int32_t mask)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      fd);
-	return 0;
+        STACK_WIND (frame, default_access_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->access, loc, mask);
+        return 0;
 }
 
 int32_t
-default_opendir (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc, fd_t *fd)
+default_ftruncate_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                          off_t offset)
 {
-	STACK_WIND (frame,
-		    default_opendir_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->opendir,
-		    loc, fd);
-	return 0;
+        STACK_WIND (frame, default_ftruncate_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->ftruncate, fd, offset);
+        return 0;
 }
 
-static int32_t
-default_fsyncdir_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno)
+int32_t
+default_getxattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                         const char *name)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_WIND (frame, default_getxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->getxattr, loc, name);
+        return 0;
 }
 
+
 int32_t
-default_fsyncdir (call_frame_t *frame,
-		  xlator_t *this,
-		  fd_t *fd,
-		  int32_t flags)
+default_xattrop_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                        gf_xattrop_flags_t flags, dict_t *dict)
 {
-	STACK_WIND (frame,
-		    default_fsyncdir_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fsyncdir,
-		    fd,
-		    flags);
-	return 0;
+        STACK_WIND (frame, default_xattrop_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->xattrop, loc, flags, dict);
+        return 0;
 }
 
+int32_t
+default_fxattrop_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                         gf_xattrop_flags_t flags, dict_t *dict)
+{
+        STACK_WIND (frame, default_fxattrop_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fxattrop, fd, flags, dict);
+        return 0;
+}
 
-static int32_t
-default_statfs_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-		    struct statvfs *buf)
+int32_t
+default_removexattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                            const char *name)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      buf);
-	return 0;
+        STACK_WIND (frame, default_removexattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->removexattr, loc, name);
+        return 0;
 }
 
 int32_t
-default_statfs (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc)
+default_lk_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                   int32_t cmd, struct flock *lock)
 {
-	STACK_WIND (frame,
-		    default_statfs_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->statfs,
-		    loc);
-	return 0;
+        STACK_WIND (frame, default_lk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->lk, fd, cmd, lock);
+        return 0;
 }
 
 
-static int32_t
-default_setxattr_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno)
+int32_t
+default_inodelk_resume (call_frame_t *frame, xlator_t *this,
+                        const char *volume, loc_t *loc, int32_t cmd,
+                        struct flock *lock)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_WIND (frame, default_inodelk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->inodelk,
+                    volume, loc, cmd, lock);
+        return 0;
 }
 
 int32_t
-default_setxattr (call_frame_t *frame,
-		  xlator_t *this,
-		  loc_t *loc,
-		  dict_t *dict,
-		  int32_t flags)
+default_finodelk_resume (call_frame_t *frame, xlator_t *this,
+                         const char *volume, fd_t *fd, int32_t cmd,
+                         struct flock *lock)
 {
-	STACK_WIND (frame,
-		    default_setxattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->setxattr,
-		    loc,
-		    dict,
-		    flags);
-	return 0;
+        STACK_WIND (frame, default_finodelk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->finodelk,
+                    volume, fd, cmd, lock);
+        return 0;
 }
 
+int32_t
+default_entrylk_resume (call_frame_t *frame, xlator_t *this,
+                        const char *volume, loc_t *loc, const char *basename,
+                        entrylk_cmd cmd, entrylk_type type)
+{
+        STACK_WIND (frame, default_entrylk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->entrylk,
+                    volume, loc, basename, cmd, type);
+        return 0;
+}
 
-static int32_t
-default_fsetxattr_cbk (call_frame_t *frame,
-                       void *cookie,
-                       xlator_t *this,
-                       int32_t op_ret,
-                       int32_t op_errno)
+int32_t
+default_fentrylk_resume (call_frame_t *frame, xlator_t *this,
+                         const char *volume, fd_t *fd, const char *basename,
+                         entrylk_cmd cmd, entrylk_type type)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_WIND (frame, default_fentrylk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fentrylk,
+                    volume, fd, basename, cmd, type);
+        return 0;
 }
 
 int32_t
-default_fsetxattr (call_frame_t *frame,
-                   xlator_t *this,
-                   fd_t *fd,
-                   dict_t *dict,
-                   int32_t flags)
+default_rchecksum_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                          off_t offset, int32_t len)
 {
-	STACK_WIND (frame,
-		    default_fsetxattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fsetxattr,
-		    fd,
-		    dict,
-		    flags);
-	return 0;
+        STACK_WIND (frame, default_rchecksum_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rchecksum, fd, offset, len);
+        return 0;
 }
 
 
-static int32_t
-default_fgetxattr_cbk (call_frame_t *frame,
-                       void *cookie,
-                       xlator_t *this,
-                       int32_t op_ret,
-                       int32_t op_errno,
-                       dict_t *dict)
+int32_t
+default_readdir_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                        size_t size, off_t off)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      dict);
-	return 0;
+        STACK_WIND (frame, default_readdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readdir, fd, size, off);
+        return 0;
 }
 
 
 int32_t
-default_fgetxattr (call_frame_t *frame,
-                   xlator_t *this,
-                   fd_t *fd,
-                   const char *name)
+default_readdirp_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                         size_t size, off_t off)
 {
-	STACK_WIND (frame,
-		    default_fgetxattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fgetxattr,
-		    fd,
-		    name);
-	return 0;
+        STACK_WIND (frame, default_readdirp_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readdirp, fd, size, off);
+        return 0;
 }
 
-static int32_t
-default_getxattr_cbk (call_frame_t *frame,
-                      void *cookie,
-                      xlator_t *this,
-                      int32_t op_ret,
-                      int32_t op_errno,
-                      dict_t *dict)
+int32_t
+default_setattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                        struct iatt *stbuf, int32_t valid)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      dict);
-	return 0;
+        STACK_WIND (frame, default_setattr_cbk, FIRST_CHILD (this),
+                    FIRST_CHILD (this)->fops->setattr, loc, stbuf, valid);
+        return 0;
 }
 
 int32_t
-default_getxattr (call_frame_t *frame,
-		  xlator_t *this,
-		  loc_t *loc,
-		  const char *name)
+default_truncate_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                         off_t offset)
 {
-	STACK_WIND (frame,
-		    default_getxattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->getxattr,
-		    loc,
-		    name);
-	return 0;
+        STACK_WIND (frame, default_truncate_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->truncate, loc, offset);
+        return 0;
 }
 
 int32_t
-default_xattrop_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     dict_t *dict)
+default_stat_resume (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, dict);
-	return 0;
+        STACK_WIND (frame, default_stat_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->stat, loc);
+        return 0;
 }
 
 int32_t
-default_xattrop (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc,
-		 gf_xattrop_flags_t flags,
-		 dict_t *dict)
+default_lookup_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                       dict_t *xattr_req)
 {
-	STACK_WIND (frame,
-		    default_xattrop_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->xattrop,
-		    loc,
-		    flags,
-		    dict);
-	return 0;
+        STACK_WIND (frame, default_lookup_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->lookup, loc, xattr_req);
+        return 0;
 }
 
 int32_t
-default_fxattrop_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno,
-		      dict_t *dict)
+default_fsetattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                         struct iatt *stbuf, int32_t valid)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, dict);
-	return 0;
+        STACK_WIND (frame, default_fsetattr_cbk, FIRST_CHILD (this),
+                    FIRST_CHILD (this)->fops->fsetattr, fd, stbuf, valid);
+        return 0;
 }
 
+/* FOPS */
+
 int32_t
-default_fxattrop (call_frame_t *frame,
-		  xlator_t *this,
-		  fd_t *fd,
-		  gf_xattrop_flags_t flags,
-		  dict_t *dict)
+default_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                   const char *name)
 {
-	STACK_WIND (frame,
-		    default_fxattrop_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fxattrop,
-		    fd,
-		    flags,
-		    dict);
-	return 0;
+        STACK_WIND (frame, default_fgetxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fgetxattr, fd, name);
+        return 0;
 }
 
+int32_t
+default_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
+                   int32_t flags)
+{
+        STACK_WIND (frame, default_fsetxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags);
+        return 0;
+}
 
-static int32_t
-default_removexattr_cbk (call_frame_t *frame,
-			 void *cookie,
-			 xlator_t *this,
-			 int32_t op_ret,
-			 int32_t op_errno)
+int32_t
+default_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *dict,
+                  int32_t flags)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno);
-	return 0;
+        STACK_WIND (frame, default_setxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->setxattr, loc, dict, flags);
+        return 0;
 }
 
 int32_t
-default_removexattr (call_frame_t *frame,
-		     xlator_t *this,
-		     loc_t *loc,
-		     const char *name)
+default_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	STACK_WIND (frame,
-		    default_removexattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->removexattr,
-		    loc,
-		    name);
-	return 0;
+        STACK_WIND (frame, default_statfs_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->statfs, loc);
+        return 0;
 }
 
-static int32_t
-default_lk_cbk (call_frame_t *frame,
-		void *cookie,
-		xlator_t *this,
-		int32_t op_ret,
-		int32_t op_errno,
-		struct flock *lock)
+int32_t
+default_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      lock);
-	return 0;
+        STACK_WIND (frame, default_fsyncdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsyncdir, fd, flags);
+        return 0;
 }
 
 int32_t
-default_lk (call_frame_t *frame,
-	    xlator_t *this,
-	    fd_t *fd,
-	    int32_t cmd,
-	    struct flock *lock)
+default_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd)
 {
-	STACK_WIND (frame,
-		    default_lk_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->lk,
-		    fd,
-		    cmd,
-		    lock);
-	return 0;
+        STACK_WIND (frame, default_opendir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->opendir, loc, fd);
+        return 0;
 }
 
+int32_t
+default_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd)
+{
+        STACK_WIND (frame, default_fstat_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fstat, fd);
+        return 0;
+}
 
-static int32_t
-default_inodelk_cbk (call_frame_t *frame, void *cookie,
-		     xlator_t *this, int32_t op_ret, int32_t op_errno)
+int32_t
+default_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags)
+{
+        STACK_WIND (frame, default_fsync_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsync, fd, flags);
+        return 0;
+}
 
+int32_t
+default_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
 {
-	STACK_UNWIND (frame, op_ret, op_errno);
-	return 0;
+        STACK_WIND (frame, default_flush_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->flush, fd);
+        return 0;
 }
 
+int32_t
+default_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                struct iovec *vector, int32_t count, off_t off,
+                struct iobref *iobref)
+{
+        STACK_WIND (frame, default_writev_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->writev, fd, vector, count, off,
+                    iobref);
+        return 0;
+}
 
 int32_t
-default_inodelk (call_frame_t *frame, xlator_t *this,
-		 const char *volume, loc_t *loc, int32_t cmd, 
-                 struct flock *lock)
+default_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
+               off_t offset)
 {
-	STACK_WIND (frame,
-		    default_inodelk_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->inodelk,
-		    volume, loc, cmd, lock);
-	return 0;
+        STACK_WIND (frame, default_readv_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readv, fd, size, offset);
+        return 0;
 }
 
 
-static int32_t
-default_finodelk_cbk (call_frame_t *frame, void *cookie,
-		      xlator_t *this, int32_t op_ret, int32_t op_errno)
+int32_t
+default_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
+              fd_t *fd, int32_t wbflags)
+{
+        STACK_WIND (frame, default_open_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->open, loc, flags, fd, wbflags);
+        return 0;
+}
 
+int32_t
+default_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
+                mode_t mode, fd_t *fd, dict_t *params)
 {
-	STACK_UNWIND (frame, op_ret, op_errno);
-	return 0;
+        STACK_WIND (frame, default_create_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->create, loc, flags, mode, fd,
+                    params);
+        return 0;
 }
 
+int32_t
+default_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc)
+{
+        STACK_WIND (frame, default_link_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->link, oldloc, newloc);
+        return 0;
+}
 
 int32_t
-default_finodelk (call_frame_t *frame, xlator_t *this,
-		  const char *volume, fd_t *fd, int32_t cmd, struct flock *lock)
+default_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
+                loc_t *newloc)
 {
-	STACK_WIND (frame,
-		    default_finodelk_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->finodelk,
-		    volume, fd, cmd, lock);
-	return 0;
+        STACK_WIND (frame, default_rename_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rename, oldloc, newloc);
+        return 0;
 }
 
 
-static int32_t
-default_entrylk_cbk (call_frame_t *frame, void *cookie,
-		     xlator_t *this, int32_t op_ret, int32_t op_errno)
+int
+default_symlink (call_frame_t *frame, xlator_t *this, const char *linkpath,
+                 loc_t *loc, dict_t *params)
+{
+        STACK_WIND (frame, default_symlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->symlink, linkpath, loc, params);
+        return 0;
+}
 
+int32_t
+default_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	STACK_UNWIND (frame, op_ret, op_errno);
-	return 0;
+        STACK_WIND (frame, default_rmdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rmdir, loc);
+        return 0;
 }
 
 int32_t
-default_entrylk (call_frame_t *frame, xlator_t *this,
-		 const char *volume, loc_t *loc, const char *basename,
-		 entrylk_cmd cmd, entrylk_type type)
+default_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc)
+{
+        STACK_WIND (frame, default_unlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->unlink, loc);
+        return 0;
+}
+
+int
+default_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
+               dict_t *params)
 {
-	STACK_WIND (frame, default_entrylk_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->entrylk,
-		    volume, loc, basename, cmd, type);
-	return 0;
+        STACK_WIND (frame, default_mkdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->mkdir, loc, mode, params);
+        return 0;
 }
 
-static int32_t
-default_fentrylk_cbk (call_frame_t *frame, void *cookie,
-		      xlator_t *this, int32_t op_ret, int32_t op_errno)
 
+int
+default_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
+               dev_t rdev, dict_t *parms)
 {
-	STACK_UNWIND (frame, op_ret, op_errno);
-	return 0;
+        STACK_WIND (frame, default_mknod_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->mknod, loc, mode, rdev, parms);
+        return 0;
 }
 
 int32_t
-default_fentrylk (call_frame_t *frame, xlator_t *this,
-		  const char *volume, fd_t *fd, const char *basename,
-		  entrylk_cmd cmd, entrylk_type type)
+default_readlink (call_frame_t *frame, xlator_t *this, loc_t *loc, size_t size)
 {
-	STACK_WIND (frame, default_fentrylk_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->fentrylk,
-		    volume, fd, basename, cmd, type);
-	return 0;
+        STACK_WIND (frame, default_readlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readlink, loc, size);
+        return 0;
 }
 
 
-/* Management operations */
+int32_t
+default_access (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask)
+{
+        STACK_WIND (frame, default_access_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->access, loc, mask);
+        return 0;
+}
+
+int32_t
+default_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset)
+{
+        STACK_WIND (frame, default_ftruncate_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->ftruncate, fd, offset);
+        return 0;
+}
 
-static int32_t
-default_getspec_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     char *spec_data)
+int32_t
+default_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                  const char *name)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      spec_data);
-	return 0;
+        STACK_WIND (frame, default_getxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->getxattr, loc, name);
+        return 0;
 }
 
 
 int32_t
-default_getspec (call_frame_t *frame,
-		 xlator_t *this,
-		 const char *key,
-		 int32_t flags)
+default_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                 gf_xattrop_flags_t flags, dict_t *dict)
 {
-	STACK_WIND (frame,
-		    default_getspec_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->getspec,
-		    key, flags);
-	return 0;
+        STACK_WIND (frame, default_xattrop_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->xattrop, loc, flags, dict);
+        return 0;
 }
 
-static int32_t
-default_rchecksum_cbk (call_frame_t *frame,
-                       void *cookie,
-                       xlator_t *this,
-                       int32_t op_ret,
-                       int32_t op_errno,
-                       uint32_t weak_checksum,
-                       uint8_t *strong_checksum)
+int32_t
+default_fxattrop (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                  gf_xattrop_flags_t flags, dict_t *dict)
 {
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      weak_checksum,
-		      strong_checksum);
-	return 0;
+        STACK_WIND (frame, default_fxattrop_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fxattrop, fd, flags, dict);
+        return 0;
 }
 
+int32_t
+default_removexattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                     const char *name)
+{
+        STACK_WIND (frame, default_removexattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->removexattr, loc, name);
+        return 0;
+}
 
 int32_t
-default_rchecksum (call_frame_t *frame,
-                   xlator_t *this,
-                   fd_t *fd, off_t offset,
-                   int32_t len)
+default_lk (call_frame_t *frame, xlator_t *this, fd_t *fd,
+            int32_t cmd, struct flock *lock)
 {
-	STACK_WIND (frame,
-		    default_rchecksum_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->rchecksum,
-		    fd, offset, len);
-	return 0;
+        STACK_WIND (frame, default_lk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->lk, fd, cmd, lock);
+        return 0;
 }
 
 
 int32_t
-default_readdir_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     gf_dirent_t *entries)
+default_inodelk (call_frame_t *frame, xlator_t *this,
+                 const char *volume, loc_t *loc, int32_t cmd,
+                 struct flock *lock)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, entries);
-	return 0;
+        STACK_WIND (frame, default_inodelk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->inodelk,
+                    volume, loc, cmd, lock);
+        return 0;
 }
 
+int32_t
+default_finodelk (call_frame_t *frame, xlator_t *this,
+                  const char *volume, fd_t *fd, int32_t cmd, struct flock *lock)
+{
+        STACK_WIND (frame, default_finodelk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->finodelk,
+                    volume, fd, cmd, lock);
+        return 0;
+}
+
+int32_t
+default_entrylk (call_frame_t *frame, xlator_t *this,
+                 const char *volume, loc_t *loc, const char *basename,
+                 entrylk_cmd cmd, entrylk_type type)
+{
+        STACK_WIND (frame, default_entrylk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->entrylk,
+                    volume, loc, basename, cmd, type);
+        return 0;
+}
 
 int32_t
-default_readdirp_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno,
-		      gf_dirent_t *entries)
+default_fentrylk (call_frame_t *frame, xlator_t *this,
+                  const char *volume, fd_t *fd, const char *basename,
+                  entrylk_cmd cmd, entrylk_type type)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, entries);
-	return 0;
+        STACK_WIND (frame, default_fentrylk_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fentrylk,
+                    volume, fd, basename, cmd, type);
+        return 0;
 }
 
 int32_t
-default_readdir (call_frame_t *frame,
-		 xlator_t *this,
-		 fd_t *fd,
-		 size_t size,
-		 off_t off)
+default_rchecksum (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
+                   int32_t len)
 {
-	STACK_WIND (frame,
-		    default_readdir_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->readdir,
-		    fd, size, off);
-	return 0;
+        STACK_WIND (frame, default_rchecksum_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->rchecksum, fd, offset, len);
+        return 0;
 }
 
 
 int32_t
-default_readdirp (call_frame_t *frame,
-		  xlator_t *this,
-		  fd_t *fd,
-		  size_t size,
-		  off_t off)
+default_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                 size_t size, off_t off)
 {
-	STACK_WIND (frame,
-		    default_readdirp_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->readdirp,
-		    fd, size, off);
-	return 0;
+        STACK_WIND (frame, default_readdir_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readdir, fd, size, off);
+        return 0;
 }
 
 
-/* notify */
-int
-default_notify (xlator_t *this, int32_t event, void *data, ...)
+int32_t
+default_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                  size_t size, off_t off)
 {
-	switch (event)
-	{
-	case GF_EVENT_PARENT_UP:
-	{
-		xlator_list_t *list = this->children;
-
-		while (list) {
-			xlator_notify (list->xlator, event, this);
-			list = list->next;
-		}
-	}
-	break;
-	case GF_EVENT_CHILD_CONNECTING:
-	case GF_EVENT_CHILD_UP:
-	{
-		xlator_list_t *parent = this->parents;
-                /* Handle the case of CHILD_UP specially, send it to fuse */
-                if (!parent && this->ctx && this->ctx->master)
-                        xlator_notify (this->ctx->master, event, this->graph, NULL);
+        STACK_WIND (frame, default_readdirp_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readdirp, fd, size, off);
+        return 0;
+}
 
-		while (parent) {
-                        if (parent->xlator->init_succeeded)
-                                xlator_notify (parent->xlator, event,
-                                               this, NULL);
-			parent = parent->next;
-		}
-	}
-	break;
-	case GF_EVENT_CHILD_DOWN:
-	default:
-	{
-		xlator_list_t *parent = this->parents;
-		while (parent) {
-                        if (parent->xlator->init_succeeded)
-                                xlator_notify (parent->xlator, event,
-                                               this, NULL);
-			parent = parent->next;
-		}
-	}
-	}
+int32_t
+default_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                 struct iatt *stbuf, int32_t valid)
+{
+        STACK_WIND (frame, default_setattr_cbk, FIRST_CHILD (this),
+                    FIRST_CHILD (this)->fops->setattr, loc, stbuf, valid);
+        return 0;
+}
 
-	return 0;
+int32_t
+default_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset)
+{
+        STACK_WIND (frame, default_truncate_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->truncate, loc, offset);
+        return 0;
 }
 
 int32_t
-default_releasedir (xlator_t *this,
-		    fd_t *fd)
+default_stat (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	return 0;
+        STACK_WIND (frame, default_stat_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->stat, loc);
+        return 0;
 }
 
 int32_t
-default_release (xlator_t *this,
-		 fd_t *fd)
+default_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                dict_t *xattr_req)
 {
-	return 0;
+        STACK_WIND (frame, default_lookup_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->lookup, loc, xattr_req);
+        return 0;
 }
 
 int32_t
-default_setattr_cbk (call_frame_t *frame,
-                     void *cookie,
-                     xlator_t *this,
-                     int32_t op_ret,
-                     int32_t op_errno,
-                     struct iatt *statpre,
-                     struct iatt *statpost)
+default_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                  struct iatt *stbuf, int32_t valid)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost);
-	return 0;
+        STACK_WIND (frame, default_fsetattr_cbk, FIRST_CHILD (this),
+                    FIRST_CHILD (this)->fops->fsetattr, fd, stbuf, valid);
+        return 0;
 }
 
+
 int32_t
-default_setattr (call_frame_t *frame,
-                 xlator_t *this,
-                 loc_t *loc,
-                 struct iatt *stbuf,
-                 int32_t valid)
+default_forget (xlator_t *this, inode_t *inode)
 {
-	STACK_WIND (frame,
-		    default_setattr_cbk,
-		    FIRST_CHILD (this),
-		    FIRST_CHILD (this)->fops->setattr,
-		    loc, stbuf, valid);
-	return 0;
+        return 0;
 }
 
+
 int32_t
-default_fsetattr_cbk (call_frame_t *frame,
-                      void *cookie,
-                      xlator_t *this,
-                      int32_t op_ret,
-                      int32_t op_errno,
-                      struct iatt *statpre,
-                      struct iatt *statpost)
+default_releasedir (xlator_t *this, fd_t *fd)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost);
-	return 0;
+        return 0;
 }
 
 int32_t
-default_fsetattr (call_frame_t *frame,
-                  xlator_t *this,
-                  fd_t *fd,
-                  struct iatt *stbuf,
-                  int32_t valid)
+default_release (xlator_t *this, fd_t *fd)
 {
-	STACK_WIND (frame,
-		    default_fsetattr_cbk,
-		    FIRST_CHILD (this),
-		    FIRST_CHILD (this)->fops->fsetattr,
-		    fd, stbuf, valid);
-	return 0;
+        return 0;
+}
+
+/* End of FOP/_CBK/_RESUME section */
+
+
+/* Management operations */
+
+int32_t
+default_getspec (call_frame_t *frame, xlator_t *this, const char *key,
+                 int32_t flags)
+{
+        STACK_WIND (frame, default_getspec_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->getspec, key, flags);
+        return 0;
+}
+
+/* notify */
+int
+default_notify (xlator_t *this, int32_t event, void *data, ...)
+{
+        switch (event)
+        {
+        case GF_EVENT_PARENT_UP:
+        {
+                xlator_list_t *list = this->children;
+
+                while (list) {
+                        xlator_notify (list->xlator, event, this);
+                        list = list->next;
+                }
+        }
+        break;
+        case GF_EVENT_CHILD_CONNECTING:
+        case GF_EVENT_CHILD_UP:
+        {
+                xlator_list_t *parent = this->parents;
+                /* Handle the case of CHILD_UP specially, send it to fuse */
+                if (!parent && this->ctx && this->ctx->master)
+                        xlator_notify (this->ctx->master, event, this->graph, NULL);
+
+                while (parent) {
+                        if (parent->xlator->init_succeeded)
+                                xlator_notify (parent->xlator, event,
+                                               this, NULL);
+                        parent = parent->next;
+                }
+        }
+        break;
+        case GF_EVENT_CHILD_DOWN:
+        default:
+        {
+                xlator_list_t *parent = this->parents;
+                while (parent) {
+                        if (parent->xlator->init_succeeded)
+                                xlator_notify (parent->xlator, event,
+                                               this, NULL);
+                        parent = parent->next;
+                }
+        }
+        }
+
+        return 0;
 }
 
 int32_t