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

2 files changed, 1340 insertions, 1166 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
diff --git a/libglusterfs/src/defaults.h b/libglusterfs/src/defaults.h
index a1177cb6c52..0f79b4c3abe 100644
--- a/libglusterfs/src/defaults.h
+++ b/libglusterfs/src/defaults.h
@@ -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
@@ -34,14 +34,9 @@
 /* Management Operations */
 
 int32_t default_getspec (call_frame_t *frame,
-			 xlator_t *this,
-			 const char *key,
-			 int32_t flag);
-
-int32_t default_checksum (call_frame_t *frame,
-			  xlator_t *this,
-			  loc_t *loc,
-			  int32_t flag);
+                         xlator_t *this,
+                         const char *key,
+                         int32_t flag);
 
 int32_t default_rchecksum (call_frame_t *frame,
                            xlator_t *this,
@@ -50,121 +45,121 @@ int32_t default_rchecksum (call_frame_t *frame,
 
 /* FileSystem operations */
 int32_t default_lookup (call_frame_t *frame,
-			xlator_t *this,
-			loc_t *loc,
-			dict_t *xattr_req);
+                        xlator_t *this,
+                        loc_t *loc,
+                        dict_t *xattr_req);
 
 int32_t default_stat (call_frame_t *frame,
-		      xlator_t *this,
-		      loc_t *loc);
+                      xlator_t *this,
+                      loc_t *loc);
 
 int32_t default_fstat (call_frame_t *frame,
-		       xlator_t *this,
-		       fd_t *fd);
+                       xlator_t *this,
+                       fd_t *fd);
 
 int32_t default_truncate (call_frame_t *frame,
-			  xlator_t *this,
-			  loc_t *loc,
-			  off_t offset);
+                          xlator_t *this,
+                          loc_t *loc,
+                          off_t offset);
 
 int32_t default_ftruncate (call_frame_t *frame,
-			   xlator_t *this,
-			   fd_t *fd,
-			   off_t offset);
+                           xlator_t *this,
+                           fd_t *fd,
+                           off_t offset);
 
 int32_t default_access (call_frame_t *frame,
-			xlator_t *this,
-			loc_t *loc,
-			int32_t mask);
+                        xlator_t *this,
+                        loc_t *loc,
+                        int32_t mask);
 
 int32_t default_readlink (call_frame_t *frame,
-			  xlator_t *this,
-			  loc_t *loc,
-			  size_t size);
+                          xlator_t *this,
+                          loc_t *loc,
+                          size_t size);
 
 int32_t default_mknod (call_frame_t *frame, xlator_t *this,
-		       loc_t *loc, mode_t mode, dev_t rdev, dict_t *params);
+                       loc_t *loc, mode_t mode, dev_t rdev, dict_t *params);
 
 int32_t default_mkdir (call_frame_t *frame, xlator_t *this,
-		       loc_t *loc, mode_t mode, dict_t *params);
+                       loc_t *loc, mode_t mode, dict_t *params);
 
 int32_t default_unlink (call_frame_t *frame,
-			xlator_t *this,
-			loc_t *loc);
+                        xlator_t *this,
+                        loc_t *loc);
 
 int32_t default_rmdir (call_frame_t *frame,
-		       xlator_t *this,
-		       loc_t *loc);
+                       xlator_t *this,
+                       loc_t *loc);
 
 int32_t default_symlink (call_frame_t *frame, xlator_t *this,
-			 const char *linkpath, loc_t *loc, dict_t *params);
+                         const char *linkpath, loc_t *loc, dict_t *params);
 
 int32_t default_rename (call_frame_t *frame,
-			xlator_t *this,
-			loc_t *oldloc,
-			loc_t *newloc);
+                        xlator_t *this,
+                        loc_t *oldloc,
+                        loc_t *newloc);
 
 int32_t default_link (call_frame_t *frame,
-		      xlator_t *this,
-		      loc_t *oldloc,
-		      loc_t *newloc);
+                      xlator_t *this,
+                      loc_t *oldloc,
+                      loc_t *newloc);
 
 int32_t default_create (call_frame_t *frame, xlator_t *this,
-			loc_t *loc, int32_t flags, mode_t mode,
+                        loc_t *loc, int32_t flags, mode_t mode,
                         fd_t *fd, dict_t *params);
 
 int32_t default_open (call_frame_t *frame,
-		      xlator_t *this,
-		      loc_t *loc,
-		      int32_t flags, fd_t *fd,
+                      xlator_t *this,
+                      loc_t *loc,
+                      int32_t flags, fd_t *fd,
                       int32_t wbflags);
 
 int32_t default_readv (call_frame_t *frame,
-		       xlator_t *this,
-		       fd_t *fd,
-		       size_t size,
-		       off_t offset);
+                       xlator_t *this,
+                       fd_t *fd,
+                       size_t size,
+                       off_t offset);
 
 int32_t default_writev (call_frame_t *frame,
-			xlator_t *this,
-			fd_t *fd,
-			struct iovec *vector,
-			int32_t count,
-			off_t offset,
+                        xlator_t *this,
+                        fd_t *fd,
+                        struct iovec *vector,
+                        int32_t count,
+                        off_t offset,
                         struct iobref *iobref);
 
 int32_t default_flush (call_frame_t *frame,
-		       xlator_t *this,
-		       fd_t *fd);
+                       xlator_t *this,
+                       fd_t *fd);
 
 int32_t default_fsync (call_frame_t *frame,
-		       xlator_t *this,
-		       fd_t *fd,
-		       int32_t datasync);
+                       xlator_t *this,
+                       fd_t *fd,
+                       int32_t datasync);
 
 int32_t default_opendir (call_frame_t *frame,
-			 xlator_t *this,
-			 loc_t *loc, fd_t *fd);
+                         xlator_t *this,
+                         loc_t *loc, fd_t *fd);
 
 int32_t default_fsyncdir (call_frame_t *frame,
-			  xlator_t *this,
-			  fd_t *fd,
-			  int32_t datasync);
+                          xlator_t *this,
+                          fd_t *fd,
+                          int32_t datasync);
 
 int32_t default_statfs (call_frame_t *frame,
-			xlator_t *this,
-			loc_t *loc);
+                        xlator_t *this,
+                        loc_t *loc);
 
 int32_t default_setxattr (call_frame_t *frame,
-			  xlator_t *this,
-			  loc_t *loc,
-			  dict_t *dict,
-			  int32_t flags);
+                          xlator_t *this,
+                          loc_t *loc,
+                          dict_t *dict,
+                          int32_t flags);
 
 int32_t default_getxattr (call_frame_t *frame,
-			  xlator_t *this,
-			  loc_t *loc,
-			  const char *name);
+                          xlator_t *this,
+                          loc_t *loc,
+                          const char *name);
 
 int32_t default_fsetxattr (call_frame_t *frame,
                            xlator_t *this,
@@ -178,67 +173,67 @@ int32_t default_fgetxattr (call_frame_t *frame,
                            const char *name);
 
 int32_t default_removexattr (call_frame_t *frame,
-			     xlator_t *this,
-			     loc_t *loc,
-			     const char *name);
+                             xlator_t *this,
+                             loc_t *loc,
+                             const char *name);
 
 int32_t default_lk (call_frame_t *frame,
-		    xlator_t *this,
-		    fd_t *fd,
-		    int32_t cmd,
-		    struct flock *flock);
+                    xlator_t *this,
+                    fd_t *fd,
+                    int32_t cmd,
+                    struct flock *flock);
 
 int32_t default_inodelk (call_frame_t *frame, xlator_t *this,
-			 const char *volume, loc_t *loc, int32_t cmd, 
+                         const char *volume, loc_t *loc, int32_t cmd,
                          struct flock *flock);
 
 int32_t default_finodelk (call_frame_t *frame, xlator_t *this,
-			  const char *volume, fd_t *fd, int32_t cmd, 
+                          const char *volume, fd_t *fd, int32_t cmd,
                           struct flock *flock);
 
 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);
+                         const char *volume, loc_t *loc, const char *basename,
+                         entrylk_cmd cmd, entrylk_type type);
 
 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);
+                          const char *volume, fd_t *fd, const char *basename,
+                          entrylk_cmd cmd, entrylk_type type);
 
 int32_t default_readdir (call_frame_t *frame,
-			  xlator_t *this,
-			  fd_t *fd,
-			  size_t size, off_t off);
+                          xlator_t *this,
+                          fd_t *fd,
+                          size_t size, off_t off);
 
 int32_t default_readdirp (call_frame_t *frame,
-			  xlator_t *this,
-			  fd_t *fd,
-			  size_t size, off_t off);
+                          xlator_t *this,
+                          fd_t *fd,
+                          size_t size, off_t off);
 
 int32_t default_xattrop (call_frame_t *frame,
-			 xlator_t *this,
-			 loc_t *loc,
-			 gf_xattrop_flags_t flags,
-			 dict_t *dict);
+                         xlator_t *this,
+                         loc_t *loc,
+                         gf_xattrop_flags_t flags,
+                         dict_t *dict);
 
 int32_t default_fxattrop (call_frame_t *frame,
-			  xlator_t *this,
-			  fd_t *fd,
-			  gf_xattrop_flags_t flags,
-			  dict_t *dict);
+                          xlator_t *this,
+                          fd_t *fd,
+                          gf_xattrop_flags_t flags,
+                          dict_t *dict);
 
 int32_t default_notify (xlator_t *this,
-			int32_t event,
-			void *data,
-			...);
+                        int32_t event,
+                        void *data,
+                        ...);
 
 int32_t default_forget (xlator_t *this,
-			inode_t *inode);
+                        inode_t *inode);
 
 int32_t default_release (xlator_t *this,
-			 fd_t *fd);
+                         fd_t *fd);
 
 int32_t default_releasedir (xlator_t *this,
-			    fd_t *fd);
+                            fd_t *fd);
 
 int32_t default_setattr (call_frame_t *frame,
                          xlator_t *this,
@@ -252,171 +247,430 @@ int32_t default_fsetattr (call_frame_t *frame,
                           struct iatt *stbuf,
                           int32_t valid);
 
+/* Resume */
+int32_t default_getspec (call_frame_t *frame,
+                         xlator_t *this,
+                         const char *key,
+                         int32_t flag);
+
+int32_t default_rchecksum (call_frame_t *frame,
+                           xlator_t *this,
+                           fd_t *fd, off_t offset,
+                           int32_t len);
+
+/* FileSystem operations */
+int32_t default_lookup_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        loc_t *loc,
+                        dict_t *xattr_req);
+
+int32_t default_stat_resume (call_frame_t *frame,
+                      xlator_t *this,
+                      loc_t *loc);
+
+int32_t default_fstat_resume (call_frame_t *frame,
+                       xlator_t *this,
+                       fd_t *fd);
+
+int32_t default_truncate_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          loc_t *loc,
+                          off_t offset);
+
+int32_t default_ftruncate_resume (call_frame_t *frame,
+                           xlator_t *this,
+                           fd_t *fd,
+                           off_t offset);
+
+int32_t default_access_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        loc_t *loc,
+                        int32_t mask);
+
+int32_t default_readlink_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          loc_t *loc,
+                          size_t size);
+
+int32_t default_mknod_resume (call_frame_t *frame, xlator_t *this,
+                       loc_t *loc, mode_t mode, dev_t rdev, dict_t *params);
+
+int32_t default_mkdir_resume (call_frame_t *frame, xlator_t *this,
+                       loc_t *loc, mode_t mode, dict_t *params);
+
+int32_t default_unlink_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        loc_t *loc);
+
+int32_t default_rmdir_resume (call_frame_t *frame,
+                       xlator_t *this,
+                       loc_t *loc);
+
+int32_t default_symlink_resume (call_frame_t *frame, xlator_t *this,
+                         const char *linkpath, loc_t *loc, dict_t *params);
+
+int32_t default_rename_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        loc_t *oldloc,
+                        loc_t *newloc);
+
+int32_t default_link_resume (call_frame_t *frame,
+                      xlator_t *this,
+                      loc_t *oldloc,
+                      loc_t *newloc);
+
+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);
+
+int32_t default_open_resume (call_frame_t *frame,
+                      xlator_t *this,
+                      loc_t *loc,
+                      int32_t flags, fd_t *fd,
+                      int32_t wbflags);
+
+int32_t default_readv_resume (call_frame_t *frame,
+                       xlator_t *this,
+                       fd_t *fd,
+                       size_t size,
+                       off_t offset);
+
+int32_t default_writev_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        fd_t *fd,
+                        struct iovec *vector,
+                        int32_t count,
+                        off_t offset,
+                        struct iobref *iobref);
+
+int32_t default_flush_resume (call_frame_t *frame,
+                       xlator_t *this,
+                       fd_t *fd);
+
+int32_t default_fsync_resume (call_frame_t *frame,
+                       xlator_t *this,
+                       fd_t *fd,
+                       int32_t datasync);
+
+int32_t default_opendir_resume (call_frame_t *frame,
+                         xlator_t *this,
+                         loc_t *loc, fd_t *fd);
+
+int32_t default_fsyncdir_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          fd_t *fd,
+                          int32_t datasync);
+
+int32_t default_statfs_resume (call_frame_t *frame,
+                        xlator_t *this,
+                        loc_t *loc);
+
+int32_t default_setxattr_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          loc_t *loc,
+                          dict_t *dict,
+                          int32_t flags);
+
+int32_t default_getxattr_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          loc_t *loc,
+                          const char *name);
+
+int32_t default_fsetxattr_resume (call_frame_t *frame,
+                           xlator_t *this,
+                           fd_t *fd,
+                           dict_t *dict,
+                           int32_t flags);
+
+int32_t default_fgetxattr_resume (call_frame_t *frame,
+                           xlator_t *this,
+                           fd_t *fd,
+                           const char *name);
+
+int32_t default_removexattr_resume (call_frame_t *frame,
+                             xlator_t *this,
+                             loc_t *loc,
+                             const char *name);
+
+int32_t default_lk_resume (call_frame_t *frame,
+                    xlator_t *this,
+                    fd_t *fd,
+                    int32_t cmd,
+                    struct flock *flock);
+
+int32_t default_inodelk_resume (call_frame_t *frame, xlator_t *this,
+                         const char *volume, loc_t *loc, int32_t cmd,
+                         struct flock *flock);
+
+int32_t default_finodelk_resume (call_frame_t *frame, xlator_t *this,
+                          const char *volume, fd_t *fd, int32_t cmd,
+                          struct flock *flock);
+
+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);
+
+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);
+
+int32_t default_readdir_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          fd_t *fd,
+                          size_t size, off_t off);
+
+int32_t default_readdirp_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          fd_t *fd,
+                          size_t size, off_t off);
+
+int32_t default_xattrop_resume (call_frame_t *frame,
+                         xlator_t *this,
+                         loc_t *loc,
+                         gf_xattrop_flags_t flags,
+                         dict_t *dict);
+
+int32_t default_fxattrop_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          fd_t *fd,
+                          gf_xattrop_flags_t flags,
+                          dict_t *dict);
+
+int32_t default_notify (xlator_t *this,
+                        int32_t event,
+                        void *data,
+                        ...);
+
+int32_t default_forget (xlator_t *this,
+                        inode_t *inode);
+
+int32_t default_release (xlator_t *this,
+                         fd_t *fd);
+
+int32_t default_releasedir (xlator_t *this,
+                            fd_t *fd);
+
+int32_t default_setattr_resume (call_frame_t *frame,
+                         xlator_t *this,
+                         loc_t *loc,
+                         struct iatt *stbuf,
+                         int32_t valid);
+
+int32_t default_fsetattr_resume (call_frame_t *frame,
+                          xlator_t *this,
+                          fd_t *fd,
+                          struct iatt *stbuf,
+                          int32_t valid);
+
+/* _cbk */
+
 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,
+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);
+
+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_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);
 
 int32_t
-default_access_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno);
+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_access_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno);
 
 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,
+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);
 
+
 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,
+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);
 
 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,
+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);
 
 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,
+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);
 
 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,
+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);
 
+
 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,
+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);
 
+
 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);
-
-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,
+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);
+
+
+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);
 
 
 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,
+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);
 
 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_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                  int32_t op_ret, int32_t op_errno, fd_t *fd);
+
+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);
+
+
+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);
+
+
+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_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_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct iatt *buf);
+
+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);
+
+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_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_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno);
+
+
+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_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_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_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_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, dict_t *dict);
 
 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_fxattrop_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_cbk (call_frame_t *frame,
-                     void *cookie,
-                     xlator_t *this,
-                     int32_t op_ret,
-                     int32_t op_errno,
-                     struct iatt *statpre,
+default_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno);
+
+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_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno);
+
+
+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_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno);
+
+int32_t
+default_fentrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno);
+
+
+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_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, gf_dirent_t *entries);
+
+
+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);
+
+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);
 
 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,
+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);
 
 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_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_mem_acct_init (xlator_t *this);