features/barrier: add barrier translator

gluster feature page:
http://www.gluster.org/community/documentation/index.php/Features/Server-side_Barrier_feature

Change-Id: Ia9f8802a54d1ffbd1cf789b80f5d30819bf65f64
BUG: 1060002
Signed-off-by: Varun Shastry <vshastry@redhat.com>
Reviewed-on: http://review.gluster.org/6928
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

2 files changed, 771 insertions, 43 deletions

diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
index f5fb2aa9d0a..8a1c281a5e0 100644
--- a/libglusterfs/src/defaults.c
+++ b/libglusterfs/src/defaults.c
@@ -373,6 +373,464 @@ default_getspec_failure_cbk (call_frame_t *frame, int32_t op_errno)
         return 0;
 }
 
+/* _cbk_resume section */
+
+int32_t
+default_lookup_cbk_resume (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 *xdata,
+                           struct iatt *postparent)
+{
+        STACK_UNWIND_STRICT (lookup, frame, op_ret, op_errno, inode, buf,
+                             xdata, postparent);
+        return 0;
+}
+
+int32_t
+default_stat_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                         dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf, xdata);
+        return 0;
+}
+
+
+int32_t
+default_truncate_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             struct iatt *prebuf, struct iatt *postbuf,
+                             dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
+                             postbuf, xdata);
+        return 0;
+}
+
+int32_t
+default_ftruncate_cbk_resume (call_frame_t *frame, void *cookie,
+                              xlator_t *this, int32_t op_ret, int32_t op_errno,
+                              struct iatt *prebuf, struct iatt *postbuf,
+                              dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (ftruncate, frame, op_ret, op_errno, prebuf,
+                             postbuf, xdata);
+        return 0;
+}
+
+int32_t
+default_access_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                           int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (access, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+int32_t
+default_readlink_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             const char *path, struct iatt *buf, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (readlink, frame, op_ret, op_errno, path, buf,
+                             xdata);
+        return 0;
+}
+
+
+int32_t
+default_mknod_cbk_resume (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, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (mknod, frame, op_ret, op_errno, inode,
+                             buf, preparent, postparent, xdata);
+        return 0;
+}
+
+int32_t
+default_mkdir_cbk_resume (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, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (mkdir, frame, op_ret, op_errno, inode,
+                             buf, preparent, postparent, xdata);
+        return 0;
+}
+
+int32_t
+default_unlink_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                           int32_t op_ret, int32_t op_errno,
+                           struct iatt *preparent, struct iatt *postparent,
+                           dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (unlink, frame, op_ret, op_errno, preparent,
+                             postparent, xdata);
+        return 0;
+}
+
+int32_t
+default_rmdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                          struct iatt *postparent, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (rmdir, frame, op_ret, op_errno, preparent,
+                             postparent, xdata);
+        return 0;
+}
+
+
+int32_t
+default_symlink_cbk_resume (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, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (symlink, frame, op_ret, op_errno, inode, buf,
+                             preparent, postparent, xdata);
+        return 0;
+}
+
+
+int32_t
+default_rename_cbk_resume (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, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (rename, frame, op_ret, op_errno, buf, preoldparent,
+                             postoldparent, prenewparent, postnewparent, xdata);
+        return 0;
+}
+
+
+int32_t
+default_link_cbk_resume (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, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (link, frame, op_ret, op_errno, inode, buf,
+                             preparent, postparent, xdata);
+        return 0;
+}
+
+
+int32_t
+default_create_cbk_resume (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,
+                           dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
+                             preparent, postparent, xdata);
+        return 0;
+}
+
+int32_t
+default_open_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno, fd_t *fd,
+                         dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd, xdata);
+        return 0;
+}
+
+int32_t
+default_readv_cbk_resume (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,
+                          dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
+                             stbuf, iobref, xdata);
+        return 0;
+}
+
+
+int32_t
+default_writev_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                           int32_t op_ret, int32_t op_errno,
+                           struct iatt *prebuf, struct iatt *postbuf,
+                           dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf, xdata);
+        return 0;
+}
+
+
+int32_t
+default_flush_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+
+int32_t
+default_fsync_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                          struct iatt *postbuf, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf,
+                             xdata);
+        return 0;
+}
+
+int32_t
+default_fstat_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                          dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fstat, frame, op_ret, op_errno, buf, xdata);
+        return 0;
+}
+
+int32_t
+default_opendir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, fd_t *fd,
+                            dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (opendir, frame, op_ret, op_errno, fd, xdata);
+        return 0;
+}
+
+int32_t
+default_fsyncdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fsyncdir, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+int32_t
+default_statfs_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                           int32_t op_ret, int32_t op_errno,
+                           struct statvfs *buf, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (statfs, frame, op_ret, op_errno, buf, xdata);
+        return 0;
+}
+
+
+int32_t
+default_setxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+int32_t
+default_fsetxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                              int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+
+int32_t
+default_fgetxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                              int32_t op_ret, int32_t op_errno, dict_t *dict,
+                              dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, dict, xdata);
+        return 0;
+}
+
+
+int32_t
+default_getxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno, dict_t *dict,
+                             dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict, xdata);
+        return 0;
+}
+
+int32_t
+default_xattrop_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, dict_t *dict,
+                            dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (xattrop, frame, op_ret, op_errno, dict, xdata);
+        return 0;
+}
+
+int32_t
+default_fxattrop_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, dict_t *dict,
+                      dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fxattrop, frame, op_ret, op_errno, dict, xdata);
+        return 0;
+}
+
+
+int32_t
+default_removexattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno,
+                         dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (removexattr, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+int32_t
+default_fremovexattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                                 int32_t op_ret, int32_t op_errno,
+                                 dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fremovexattr, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+int32_t
+default_lk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno, struct gf_flock *lock,
+                       dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (lk, frame, op_ret, op_errno, lock, xdata);
+        return 0;
+}
+
+int32_t
+default_inodelk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+int32_t
+default_finodelk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (finodelk, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+int32_t
+default_entrylk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (entrylk, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+int32_t
+default_fentrylk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fentrylk, frame, op_ret, op_errno, xdata);
+        return 0;
+}
+
+
+int32_t
+default_rchecksum_cbk_resume (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,
+                              dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (rchecksum, frame, op_ret, op_errno, weak_checksum,
+                             strong_checksum, xdata);
+        return 0;
+}
+
+
+int32_t
+default_readdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno,
+                            gf_dirent_t *entries, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (readdir, frame, op_ret, op_errno, entries, xdata);
+        return 0;
+}
+
+
+int32_t
+default_readdirp_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             gf_dirent_t *entries, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (readdirp, frame, op_ret, op_errno, entries, xdata);
+        return 0;
+}
+
+int32_t
+default_setattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno,
+                            struct iatt *statpre, struct iatt *statpost,
+                            dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (setattr, frame, op_ret, op_errno, statpre,
+                             statpost, xdata);
+        return 0;
+}
+
+int32_t
+default_fsetattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             struct iatt *statpre, struct iatt *statpost,
+                             dict_t *xdata)
+{
+        STACK_UNWIND_STRICT (fsetattr, frame, op_ret, op_errno, statpre,
+                             statpost, xdata);
+        return 0;
+}
+
+int32_t
+default_fallocate_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             struct iatt *pre, struct iatt *post,
+                             dict_t *xdata)
+{
+        STACK_UNWIND_STRICT(fallocate, frame, op_ret, op_errno,
+                            pre, post, xdata);
+        return 0;
+}
+
+int32_t
+default_discard_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
+                           int32_t op_ret, int32_t op_errno, struct iatt *pre,
+                           struct iatt *post, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT(discard, frame, op_ret, op_errno, pre, post, xdata);
+        return 0;
+}
+
+int32_t
+default_zerofill_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, struct iatt *pre,
+                            struct iatt *post, dict_t *xdata)
+{
+        STACK_UNWIND_STRICT(zerofill, frame, op_ret, op_errno, pre,
+                           post, xdata);
+        return 0;
+}
+
+
+int32_t
+default_getspec_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno, char *spec_data)
+{
+        STACK_UNWIND_STRICT (getspec, frame, op_ret, op_errno, spec_data);
+        return 0;
+}
+
 /* _CBK function section */
 
 int32_t
@@ -805,8 +1263,8 @@ default_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno, struct iatt *pre,
                       struct iatt *post, dict_t *xdata)
 {
-	STACK_UNWIND_STRICT(fallocate, frame, op_ret, op_errno, pre, post, xdata);
-	return 0;
+        STACK_UNWIND_STRICT(fallocate, frame, op_ret, op_errno, pre, post, xdata);
+        return 0;
 }
 
 int32_t
@@ -814,8 +1272,8 @@ default_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                     int32_t op_ret, int32_t op_errno, struct iatt *pre,
                     struct iatt *post, dict_t *xdata)
 {
-	STACK_UNWIND_STRICT(discard, frame, op_ret, op_errno, pre, post, xdata);
-	return 0;
+        STACK_UNWIND_STRICT(discard, frame, op_ret, op_errno, pre, post, xdata);
+        return 0;
 }
 
 int32_t
@@ -1239,21 +1697,21 @@ default_fsetattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
 
 int32_t
 default_fallocate_resume(call_frame_t *frame, xlator_t *this, fd_t *fd,
-			 int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
+                         int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
 {
-	STACK_WIND(frame, default_fallocate_cbk, FIRST_CHILD(this),
-		   FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset, len,
-		   xdata);
+        STACK_WIND(frame, default_fallocate_cbk, FIRST_CHILD(this),
+                   FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset, len,
+                   xdata);
         return 0;
 }
 
 int32_t
 default_discard_resume(call_frame_t *frame, xlator_t *this, fd_t *fd,
-		       off_t offset, size_t len, dict_t *xdata)
+                       off_t offset, size_t len, dict_t *xdata)
 {
-	STACK_WIND(frame, default_discard_cbk, FIRST_CHILD(this),
-		   FIRST_CHILD(this)->fops->discard, fd, offset, len,
-		   xdata);
+        STACK_WIND(frame, default_discard_cbk, FIRST_CHILD(this),
+                   FIRST_CHILD(this)->fops->discard, fd, offset, len,
+                   xdata);
         return 0;
 }
 
@@ -1674,22 +2132,22 @@ default_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
 
 int32_t
 default_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd,
-		  int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
+                  int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
 {
-	STACK_WIND_TAIL(frame, FIRST_CHILD(this),
-			FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset,
-			len, xdata);
-	return 0;
+        STACK_WIND_TAIL(frame, FIRST_CHILD(this),
+                        FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset,
+                        len, xdata);
+        return 0;
 }
 
 int32_t
 default_discard(call_frame_t *frame, xlator_t *this, fd_t *fd,
-		off_t offset, size_t len, dict_t *xdata)
+                off_t offset, size_t len, dict_t *xdata)
 {
-	STACK_WIND_TAIL(frame, FIRST_CHILD(this),
-			FIRST_CHILD(this)->fops->discard, fd, offset, len,
-			xdata);
-	return 0;
+        STACK_WIND_TAIL(frame, FIRST_CHILD(this),
+                        FIRST_CHILD(this)->fops->discard, fd, offset, len,
+                        xdata);
+        return 0;
 }
 
 int32_t
diff --git a/libglusterfs/src/defaults.h b/libglusterfs/src/defaults.h
index f0b786ddf5a..1b33e809900 100644
--- a/libglusterfs/src/defaults.h
+++ b/libglusterfs/src/defaults.h
@@ -244,16 +244,16 @@ int32_t default_fsetattr (call_frame_t *frame,
                           int32_t valid, dict_t *xdata);
 
 int32_t default_fallocate(call_frame_t *frame,
-			  xlator_t *this,
-			  fd_t *fd,
-			  int32_t keep_size, off_t offset,
-			  size_t len, dict_t *xdata);
+                          xlator_t *this,
+                          fd_t *fd,
+                          int32_t keep_size, off_t offset,
+                          size_t len, dict_t *xdata);
 
 int32_t default_discard(call_frame_t *frame,
-			xlator_t *this,
-			fd_t *fd,
-			off_t offset,
-			size_t len, dict_t *xdata);
+                        xlator_t *this,
+                        fd_t *fd,
+                        off_t offset,
+                        size_t len, dict_t *xdata);
 
 int32_t default_zerofill(call_frame_t *frame,
                         xlator_t *this,
@@ -473,16 +473,16 @@ int32_t default_fsetattr_resume (call_frame_t *frame,
                           int32_t valid, dict_t *xdata);
 
 int32_t default_fallocate_resume(call_frame_t *frame,
-				 xlator_t *this,
-				 fd_t *fd,
-				 int32_t keep_size, off_t offset,
-				 size_t len, dict_t *xdata);
+                                 xlator_t *this,
+                                 fd_t *fd,
+                                 int32_t keep_size, off_t offset,
+                                 size_t len, dict_t *xdata);
 
 int32_t default_discard_resume(call_frame_t *frame,
-			       xlator_t *this,
-			       fd_t *fd,
-			       off_t offset,
-			       size_t len, dict_t *xdata);
+                               xlator_t *this,
+                               fd_t *fd,
+                               off_t offset,
+                               size_t len, dict_t *xdata);
 
 int32_t default_zerofill_resume(call_frame_t *frame,
                                xlator_t *this,
@@ -491,9 +491,279 @@ int32_t default_zerofill_resume(call_frame_t *frame,
                                off_t len, dict_t *xdata);
 
 
-/* _cbk */
+/* _cbk_resume */
+
+int32_t
+default_lookup_cbk_resume (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 * xdata,
+                           struct iatt *postparent);
+
+int32_t
+default_stat_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                         int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                         dict_t * xdata);
+
+
+int32_t
+default_truncate_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, struct iatt *prebuf,
+                             struct iatt *postbuf, dict_t * xdata);
+
+int32_t
+default_ftruncate_cbk_resume (call_frame_t * frame, void *cookie,
+                              xlator_t * this, int32_t op_ret,
+                              int32_t op_errno, struct iatt *prebuf,
+                              struct iatt *postbuf, dict_t * xdata);
+
+int32_t
+default_access_cbk_resume (call_frame_t * frame, void *cookie,
+                           xlator_t * this, int32_t op_ret, int32_t op_errno,
+                           dict_t * xdata);
+
+int32_t
+default_readlink_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, const char *path,
+                             struct iatt *buf, dict_t * xdata);
+
+
+int32_t
+default_mknod_cbk_resume (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, dict_t * xdata);
+
+int32_t
+default_mkdir_cbk_resume (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, dict_t * xdata);
+
+int32_t
+default_unlink_cbk_resume (call_frame_t * frame, void *cookie,
+                           xlator_t * this, int32_t op_ret, int32_t op_errno,
+                           struct iatt *preparent, struct iatt *postparent,
+                           dict_t * xdata);
+
+int32_t
+default_rmdir_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                          int32_t op_ret, int32_t op_errno,
+                          struct iatt *preparent, struct iatt *postparent,
+                          dict_t * xdata);
+
+
+int32_t
+default_symlink_cbk_resume (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,
+                            dict_t * xdata);
+
+
+int32_t
+default_rename_cbk_resume (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, dict_t * xdata);
+
+
+int32_t
+default_link_cbk_resume (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, dict_t * xdata);
+
+
+int32_t
+default_create_cbk_resume (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,
+                           dict_t * xdata);
+
+int32_t
+default_open_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                         int32_t op_ret, int32_t op_errno, fd_t * fd,
+                         dict_t * xdata);
+
+int32_t
+default_readv_cbk_resume (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,
+                          dict_t * xdata);
+
+
+int32_t
+default_writev_cbk_resume (call_frame_t * frame, void *cookie,
+                           xlator_t * this, int32_t op_ret, int32_t op_errno,
+                           struct iatt *prebuf, struct iatt *postbuf,
+                           dict_t * xdata);
+
+
+int32_t
+default_flush_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                          int32_t op_ret, int32_t op_errno, dict_t * xdata);
+
+
+
+int32_t
+default_fsync_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                          int32_t op_ret, int32_t op_errno,
+                          struct iatt *prebuf, struct iatt *postbuf,
+                          dict_t * xdata);
+
+int32_t
+default_fstat_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                          int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                          dict_t * xdata);
 
 int32_t
+default_opendir_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            fd_t * fd, dict_t * xdata);
+
+int32_t
+default_fsyncdir_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * xdata);
+
+int32_t
+default_statfs_cbk_resume (call_frame_t * frame, void *cookie,
+                           xlator_t * this, int32_t op_ret, int32_t op_errno,
+                           struct statvfs *buf, dict_t * xdata);
+
+
+int32_t
+default_setxattr_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * xdata);
+
+
+int32_t
+default_fsetxattr_cbk_resume (call_frame_t * frame, void *cookie,
+                              xlator_t * this, int32_t op_ret,
+                              int32_t op_errno, dict_t * xdata);
+
+
+
+int32_t
+default_fgetxattr_cbk_resume (call_frame_t * frame, void *cookie,
+                              xlator_t * this, int32_t op_ret,
+                              int32_t op_errno, dict_t * dict,
+                              dict_t * xdata);
+
+
+int32_t
+default_getxattr_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * dict, dict_t * xdata);
+
+int32_t
+default_xattrop_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            dict_t * dict, dict_t * xdata);
+
+int32_t
+default_fxattrop_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * dict, dict_t * xdata);
+
+
+int32_t
+default_removexattr_cbk_resume (call_frame_t * frame, void *cookie,
+                                xlator_t * this, int32_t op_ret,
+                                int32_t op_errno, dict_t * xdata);
+
+int32_t
+default_fremovexattr_cbk_resume (call_frame_t * frame, void *cookie,
+                                 xlator_t * this, int32_t op_ret,
+                                 int32_t op_errno, dict_t * xdata);
+
+int32_t
+default_lk_cbk_resume (call_frame_t * frame, void *cookie, xlator_t * this,
+                       int32_t op_ret, int32_t op_errno,
+                       struct gf_flock *lock, dict_t * xdata);
+
+int32_t
+default_inodelk_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            dict_t * xdata);
+
+
+int32_t
+default_finodelk_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * xdata);
+
+int32_t
+default_entrylk_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            dict_t * xdata);
+
+int32_t
+default_fentrylk_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, dict_t * xdata);
+
+
+int32_t
+default_rchecksum_cbk_resume (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, dict_t * xdata);
+
+
+int32_t
+default_readdir_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            gf_dirent_t * entries, dict_t * xdata);
+
+
+int32_t
+default_readdirp_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, gf_dirent_t * entries,
+                             dict_t * xdata);
+
+int32_t
+default_setattr_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            struct iatt *statpre, struct iatt *statpost,
+                            dict_t * xdata);
+
+int32_t
+default_fsetattr_cbk_resume (call_frame_t * frame, void *cookie,
+                             xlator_t * this, int32_t op_ret,
+                             int32_t op_errno, struct iatt *statpre,
+                             struct iatt *statpost, dict_t * xdata);
+
+int32_t default_fallocate_cbk_resume (call_frame_t * frame, void *cookie,
+                                      xlator_t * this, int32_t op_ret,
+                                      int32_t op_errno, struct iatt *pre,
+                                      struct iatt *post, dict_t * xdata);
+
+int32_t default_discard_cbk_resume (call_frame_t * frame, void *cookie,
+                                    xlator_t * this, int32_t op_ret,
+                                    int32_t op_errno, struct iatt *pre,
+                                    struct iatt *post, dict_t * xdata);
+
+int32_t default_zerofill_cbk_resume (call_frame_t * frame, void *cookie,
+                                     xlator_t * this, int32_t op_ret,
+                                     int32_t op_errno, struct iatt *pre,
+                                     struct iatt *post, dict_t * xdata);
+
+int32_t
+default_getspec_cbk_resume (call_frame_t * frame, void *cookie,
+                            xlator_t * this, int32_t op_ret, int32_t op_errno,
+                            char *spec_data);
+
+/* _CBK */
+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 *xdata, struct iatt *postparent);
@@ -702,12 +972,12 @@ default_fsetattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                       struct iatt *statpost, dict_t *xdata);
 
 int32_t default_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
-			      int32_t op_ret, int32_t op_errno, struct iatt *pre,
-			      struct iatt *post, dict_t *xdata);
+                              int32_t op_ret, int32_t op_errno, struct iatt *pre,
+                              struct iatt *post, dict_t *xdata);
 
 int32_t default_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
-			    int32_t op_ret, int32_t op_errno, struct iatt *pre,
-			    struct iatt *post, dict_t *xdata);
+                            int32_t op_ret, int32_t op_errno, struct iatt *pre,
+                            struct iatt *post, dict_t *xdata);
 
 int32_t default_zerofill_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
                             int32_t op_ret, int32_t op_errno, struct iatt *pre,