[svn-r18037] Description:

	Bring r18035 from merge_metadata_journaling branch to trunk:

	More "brush clearing" convergence between metadata_journaling branch
and the trunk.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.6.2 (amazon) in debug mode
        Mac OS X/32 10.6.2 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode

1 files changed, 293 insertions, 412 deletions

diff --git a/src/H5B.c b/src/H5B.c
index 8981e96..591b974 100644
--- a/src/H5B.c
+++ b/src/H5B.c
@@ -202,19 +202,6 @@ H5FL_SEQ_DEFINE_STATIC(size_t);
  *		matzke@llnl.gov
  *		Jun 23 1997
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		Changed the name of the ADDR argument to ADDR_P to make it
- *		obvious that the address is passed by reference unlike most
- *		other functions that take addresses.
- *
- *              John Mainzer 6/9/05
- *              Removed code setting the is_dirty field of the cache info.
- *              This is no longer pemitted, as the cache code is now
- *              manageing this field.  Since this function uses a call to
- *              H5AC_set() (which marks the entry dirty automaticly), no
- *              other change is required.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
@@ -230,29 +217,29 @@ H5B_create(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, void *udata,
     /*
      * Check arguments.
      */
-    assert(f);
-    assert(type);
-    assert(addr_p);
+    HDassert(f);
+    HDassert(type);
+    HDassert(addr_p);
 
     /*
      * Allocate file and memory data structures.
      */
-    if (NULL==(bt = H5FL_MALLOC(H5B_t)))
-	HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for B-tree root node")
+    if(NULL == (bt = H5FL_MALLOC(H5B_t)))
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "memory allocation failed for B-tree root node")
     HDmemset(&bt->cache_info, 0, sizeof(H5AC_info_t));
     bt->level = 0;
     bt->left = HADDR_UNDEF;
     bt->right = HADDR_UNDEF;
     bt->nchildren = 0;
-    if((bt->rc_shared=(type->get_shared)(f, udata))==NULL)
-	HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't retrieve B-tree node buffer")
+    if(NULL == (bt->rc_shared = (type->get_shared)(f, udata)))
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTGET, FAIL, "can't retrieve B-tree node buffer")
     shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
-    if (NULL==(bt->native=H5FL_BLK_MALLOC(native_block,shared->sizeof_keys)) ||
-            NULL==(bt->child=H5FL_SEQ_MALLOC(haddr_t,(size_t)shared->two_k)))
-	HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for B-tree root node")
-    if (HADDR_UNDEF==(*addr_p=H5MF_alloc(f, H5FD_MEM_BTREE, dxpl_id, (hsize_t)shared->sizeof_rnode)))
-	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for B-tree root node")
+    if(NULL == (bt->native = H5FL_BLK_MALLOC(native_block, shared->sizeof_keys)) ||
+            NULL == (bt->child = H5FL_SEQ_MALLOC(haddr_t, (size_t)shared->two_k)))
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "memory allocation failed for B-tree root node")
+    if(HADDR_UNDEF == (*addr_p = H5MF_alloc(f, H5FD_MEM_BTREE, dxpl_id, (hsize_t)shared->sizeof_rnode)))
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "file allocation failed for B-tree root node")
 
     /*
      * Cache the new B-tree node.
@@ -264,14 +251,14 @@ H5B_create(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, void *udata,
 #endif
 
 done:
-    if (ret_value<0) {
+    if(ret_value < 0) {
         if(shared && shared->sizeof_rnode>0) {
             H5_CHECK_OVERFLOW(shared->sizeof_rnode,size_t,hsize_t);
             (void)H5MF_xfree(f, H5FD_MEM_BTREE, dxpl_id, *addr_p, (hsize_t)shared->sizeof_rnode);
         } /* end if */
-	if (bt)
-            (void)H5B_dest(f,bt);
-    }
+	if(bt)
+            (void)H5B_dest(f, bt);
+    } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5B_create() */        /*lint !e818 Can't make udata a pointer to const */
@@ -298,9 +285,6 @@ done:
  *		matzke@llnl.gov
  *		Jun 23 1997
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		The ADDR argument is passed by value.
  *-------------------------------------------------------------------------
  */
 htri_t
@@ -329,7 +313,7 @@ H5B_find(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void *u
      * the thing for which we're searching.
      */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_READ)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree node")
     shared = (H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
 
@@ -349,7 +333,7 @@ H5B_find(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void *u
     /*
      * Follow the link to the subtree or to the data node.
      */
-    assert(idx < bt->nchildren);
+    HDassert(idx < bt->nchildren);
 
     if(bt->level > 0) {
 	if((ret_value = H5B_find(f, dxpl_id, type, bt->child[idx], udata)) < 0)
@@ -362,7 +346,7 @@ H5B_find(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void *u
 
 done:
     if(bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-	HDONE_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release node")
+	HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release node")
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5B_find() */
@@ -388,20 +372,6 @@ done:
  *		matzke@llnl.gov
  *		Jul  3 1997
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		The OLD_ADDR argument is passed by value. The NEW_ADDR
- *		argument has been renamed to NEW_ADDR_P
- *
- *              John Mainzer, 6/9/05
- *              Modified the function to use the new dirtied parameter of
- *              of H5AC_unprotect() instead of modifying the is_dirty
- *              field of the cache info.
- *
- *              In this case, that required adding the new
- *		old_bt_dirtied_ptr parameter to the function's argument
- *		list.
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -421,39 +391,38 @@ H5B_split(H5F_t *f, hid_t dxpl_id, H5B_t *old_bt, unsigned *old_bt_flags,
     /*
      * Check arguments.
      */
-    assert(f);
-    assert(old_bt);
-    assert(old_bt_flags);
-    assert(H5F_addr_defined(old_addr));
+    HDassert(f);
+    HDassert(old_bt);
+    HDassert(old_bt_flags);
+    HDassert(H5F_addr_defined(old_addr));
 
     /*
      * Initialize variables.
      */
-    shared=(H5B_shared_t *)H5RC_GET_OBJ(old_bt->rc_shared);
+    shared = (H5B_shared_t *)H5RC_GET_OBJ(old_bt->rc_shared);
     HDassert(shared);
-    assert(old_bt->nchildren == shared->two_k);
+    HDassert(old_bt->nchildren == shared->two_k);
 
     /* Get the dataset transfer property list */
-    if (NULL == (dx_plist = (H5P_genplist_t *)H5I_object(dxpl_id)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list")
+    if(NULL == (dx_plist = (H5P_genplist_t *)H5I_object(dxpl_id)))
+        HGOTO_ERROR(H5E_BTREE, H5E_BADTYPE, FAIL, "not a dataset transfer property list")
 
     /* Get B-tree split ratios */
-    if(H5P_get(dx_plist, H5D_XFER_BTREE_SPLIT_RATIO_NAME, &split_ratios[0])<0)
-        HGOTO_ERROR (H5E_PLIST, H5E_CANTGET, FAIL, "Can't retrieve B-tree split ratios")
+    if(H5P_get(dx_plist, H5D_XFER_BTREE_SPLIT_RATIO_NAME, &split_ratios[0]) < 0)
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTGET, FAIL, "can't retrieve B-tree split ratios")
 
 #ifdef H5B_DEBUG
-    if (H5DEBUG(B)) {
+    if(H5DEBUG(B)) {
 	const char *side;
-	if (!H5F_addr_defined(old_bt->left) &&
-	    !H5F_addr_defined(old_bt->right)) {
+
+	if(!H5F_addr_defined(old_bt->left) && !H5F_addr_defined(old_bt->right))
 	    side = "ONLY";
-	} else if (!H5F_addr_defined(old_bt->right)) {
+	else if(!H5F_addr_defined(old_bt->right))
 	    side = "RIGHT";
-	} else if (!H5F_addr_defined(old_bt->left)) {
+	else if(!H5F_addr_defined(old_bt->left))
 	    side = "LEFT";
-	} else {
+	else
 	    side = "MIDDLE";
-	}
 	fprintf(H5DEBUG(B), "H5B_split: %3u {%5.3f,%5.3f,%5.3f} %6s",
 		shared->two_k, split_ratios[0], split_ratios[1], split_ratios[2], side);
     }
@@ -463,37 +432,35 @@ H5B_split(H5F_t *f, hid_t dxpl_id, H5B_t *old_bt, unsigned *old_bt_flags,
      * Decide how to split the children of the old node among the old node
      * and the new node.
      */
-    if (!H5F_addr_defined(old_bt->right)) {
+    if(!H5F_addr_defined(old_bt->right))
 	nleft = (unsigned)((double)shared->two_k * split_ratios[2]);	/*right*/
-    } else if (!H5F_addr_defined(old_bt->left)) {
+    else if(!H5F_addr_defined(old_bt->left))
 	nleft = (unsigned)((double)shared->two_k * split_ratios[0]);	/*left*/
-    } else {
+    else
 	nleft = (unsigned)((double)shared->two_k * split_ratios[1]);	/*middle*/
-    }
 
     /*
      * Keep the new child in the same node as the child that split.  This can
      * result in nodes that have an unused child when data is written
      * sequentially, but it simplifies stuff below.
      */
-    if (idx<nleft && nleft==shared->two_k) {
+    if(idx < nleft && nleft == shared->two_k)
 	--nleft;
-    } else if (idx>=nleft && 0==nleft) {
+    else if(idx >= nleft && 0 == nleft)
 	nleft++;
-    }
     nright = shared->two_k - nleft;
 #ifdef H5B_DEBUG
-    if (H5DEBUG(B))
+    if(H5DEBUG(B))
 	fprintf(H5DEBUG(B), " split %3d/%-3d\n", nleft, nright);
 #endif
 
     /*
      * Create the new B-tree node.
      */
-    if (H5B_create(f, dxpl_id, shared->type, udata, new_addr_p/*out*/) < 0)
+    if(H5B_create(f, dxpl_id, shared->type, udata, new_addr_p/*out*/) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "unable to create B-tree")
     if(NULL == (new_bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, *new_addr_p, shared->type, udata, H5AC_WRITE)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to protect B-tree")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to protect B-tree")
     new_bt->level = old_bt->level;
 
     /*
@@ -510,10 +477,10 @@ H5B_split(H5F_t *f, hid_t dxpl_id, H5B_t *old_bt, unsigned *old_bt_flags,
     new_bt_flags |= H5AC__DIRTIED_FLAG;
     HDmemcpy(new_bt->native,
 	     old_bt->native + nleft * shared->type->sizeof_nkey,
-	     (nright+1) * shared->type->sizeof_nkey);
+	     (nright + 1) * shared->type->sizeof_nkey);
     HDmemcpy(new_bt->child,
             &old_bt->child[nleft],
-            nright*sizeof(haddr_t));
+            nright * sizeof(haddr_t));
 
     new_bt->nchildren = nright;
 
@@ -533,19 +500,19 @@ H5B_split(H5F_t *f, hid_t dxpl_id, H5B_t *old_bt, unsigned *old_bt_flags,
         H5B_t	*tmp_bt;
 
 	if(NULL == (tmp_bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, old_bt->right, shared->type, udata, H5AC_WRITE)))
-	    HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load right sibling")
+	    HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load right sibling")
 
 	tmp_bt->left = *new_addr_p;
 
         if(H5AC_unprotect(f, dxpl_id, H5AC_BT, old_bt->right, tmp_bt, H5AC__DIRTIED_FLAG) < 0)
-            HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
     } /* end if */
 
     old_bt->right = *new_addr_p;
 
 done:
     if(new_bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, *new_addr_p, new_bt, new_bt_flags) < 0)
-        HDONE_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node")
+        HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5B_split() */
@@ -563,25 +530,6 @@ done:
  *		matzke@llnl.gov
  *		Jun 23 1997
  *
- * Modifications:
- * 	Robb Matzke, 28 Sep 1998
- *	The optional SPLIT_RATIOS[] indicates what percent of the child
- *	pointers should go in the left node when a node splits.  There are
- *	three possibilities and a separate split ratio can be specified for
- *	each: [0] The node that split is the left-most node at its level of
- *	the tree, [1] the node that split has left and right siblings, [2]
- *	the node that split is the right-most node at its level of the tree.
- *	When a node is an only node at its level then we use the right-most
- *	rule.  If SPLIT_RATIOS is null then default values are used.
- *
- * 	Robb Matzke, 1999-07-28
- *	The ADDR argument is passed by value.
- *
- *      John Mainzer, 6/9/05
- *      Modified the function to use the new dirtied parameter of
- *      of H5AC_unprotect() instead of modifying the is_dirty
- *      field of the cache info.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
@@ -608,42 +556,42 @@ H5B_insert(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
     FUNC_ENTER_NOAPI(H5B_insert, FAIL)
 
     /* Check arguments. */
-    assert(f);
-    assert(type);
-    assert(type->sizeof_nkey <= sizeof _lt_key);
-    assert(H5F_addr_defined(addr));
+    HDassert(f);
+    HDassert(type);
+    HDassert(type->sizeof_nkey <= sizeof _lt_key);
+    HDassert(H5F_addr_defined(addr));
 
-    if ((int)(my_ins = H5B_insert_helper(f, dxpl_id, addr, type, lt_key,
-            &lt_key_changed, md_key, udata, rt_key, &rt_key_changed, &child/*out*/))<0)
+    if((int)(my_ins = H5B_insert_helper(f, dxpl_id, addr, type, lt_key,
+            &lt_key_changed, md_key, udata, rt_key, &rt_key_changed, &child/*out*/)) < 0)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "unable to insert key")
-    if (H5B_INS_NOOP == my_ins)
+    if(H5B_INS_NOOP == my_ins)
         HGOTO_DONE(SUCCEED)
     HDassert(H5B_INS_RIGHT == my_ins);
 
     /* the current root */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_READ)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to locate root of B-tree")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to locate root of B-tree")
     shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
 
     level = bt->level;
 
-    if (!lt_key_changed)
+    if(!lt_key_changed)
 	HDmemcpy(lt_key, H5B_NKEY(bt,shared,0), type->sizeof_nkey);
 
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release new child")
     bt = NULL;
 
     /* the new node */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, child, type, udata, H5AC_READ)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load new node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load new node")
 
-    if (!rt_key_changed)
+    if(!rt_key_changed)
 	HDmemcpy(rt_key, H5B_NKEY(bt,shared,bt->nchildren), type->sizeof_nkey);
 
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, child, bt, H5AC__NO_FLAGS_SET) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release new child")
     bt = NULL;
 
     /*
@@ -652,17 +600,17 @@ H5B_insert(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
      * from "moving".
      */
     H5_CHECK_OVERFLOW(shared->sizeof_rnode,size_t,hsize_t);
-    if (HADDR_UNDEF==(old_root=H5MF_alloc(f, H5FD_MEM_BTREE, dxpl_id, (hsize_t)shared->sizeof_rnode)))
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate file space to move root")
+    if(HADDR_UNDEF == (old_root = H5MF_alloc(f, H5FD_MEM_BTREE, dxpl_id, (hsize_t)shared->sizeof_rnode)))
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "unable to allocate file space to move root")
 
     /* update the new child's left pointer */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, child, type, udata, H5AC_WRITE)))
-        HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load new child")
 
     bt->left = old_root;
 
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, child, bt, H5AC__DIRTIED_FLAG) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release new child")
     bt = NULL;    /* Make certain future references will be caught */
 
     /*
@@ -671,23 +619,23 @@ H5B_insert(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
      */
     /* Bring the old root into the cache if it's not already */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_WRITE)))
-        HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load new child")
 
     /* Make certain the old root info is marked as dirty before moving it, */
     /* so it is certain to be written out at the new location */
 
     /* Make a copy of the old root information */
-    if (NULL == (new_bt = H5B_copy(bt))) {
-        HCOMMON_ERROR(H5E_BTREE, H5E_CANTLOAD, "unable to copy old root");
+    if(NULL == (new_bt = H5B_copy(bt))) {
+        HCOMMON_ERROR(H5E_BTREE, H5E_CANTCOPY, "unable to copy old root");
 
         if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__DIRTIED_FLAG) < 0)
-            HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release new child")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release new child")
 
         HGOTO_DONE(FAIL)
-    }
+    } /* end if */
 
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__DIRTIED_FLAG) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release new child")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release new child")
     bt = NULL;    /* Make certain future references will be caught */
 
     /* Move the location of the old root on the disk */
@@ -736,18 +684,6 @@ done:
  *		matzke@llnl.gov
  *		Jul  8 1997
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		The CHILD argument is passed by value.
- *
- *              John Mainzer, 6/9/05
- *              Modified the function to use the new dirtied parameter of
- *              of H5AC_unprotect() instead of modifying the is_dirty
- *              field of the cache info.
- *
- *              In this case, that required adding the new dirtied_ptr
- *              parameter to the function's argument list.
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -759,28 +695,28 @@ H5B_insert_child(H5B_t *bt, unsigned *bt_flags, unsigned idx,
 
     FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B_insert_child)
 
-    assert(bt);
-    assert(bt_flags);
-    shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
+    HDassert(bt);
+    HDassert(bt_flags);
+    shared = (H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
-    assert(bt->nchildren<shared->two_k);
+    HDassert(bt->nchildren < shared->two_k);
 
     /* Check for inserting right-most key into node (common when just appending
      * records to an unlimited dimension chunked dataset)
      */
-    base=H5B_NKEY(bt,shared,(idx+1));
-    if((idx+1)==bt->nchildren) {
+    base = H5B_NKEY(bt, shared, (idx + 1));
+    if((idx + 1) == bt->nchildren) {
         /* Make room for the new key */
         HDmemcpy(base + shared->type->sizeof_nkey, base,
                   shared->type->sizeof_nkey);   /* No overlap possible - memcpy() OK */
         HDmemcpy(base, md_key, shared->type->sizeof_nkey);
 
         /* The MD_KEY is the left key of the new node */
-        if (H5B_INS_RIGHT == anchor)
+        if(H5B_INS_RIGHT == anchor)
             idx++;  /* Don't have to memmove() child addresses down, just add new child */
         else
             /* Make room for the new child address */
-            bt->child[idx+1] = bt->child[idx];
+            bt->child[idx + 1] = bt->child[idx];
     } /* end if */
     else {
         /* Make room for the new key */
@@ -789,7 +725,7 @@ H5B_insert_child(H5B_t *bt, unsigned *bt_flags, unsigned idx,
         HDmemcpy(base, md_key, shared->type->sizeof_nkey);
 
         /* The MD_KEY is the left key of the new node */
-        if (H5B_INS_RIGHT == anchor)
+        if(H5B_INS_RIGHT == anchor)
             idx++;
 
         /* Make room for the new child address */
@@ -836,27 +772,6 @@ H5B_insert_child(H5B_t *bt, unsigned *bt_flags, unsigned idx,
  *		matzke@llnl.gov
  *		Jul  9 1997
  *
- * Modifications:
- *
- * 	Robb Matzke, 28 Sep 1998
- *	The optional SPLIT_RATIOS[] indicates what percent of the child
- *	pointers should go in the left node when a node splits.  There are
- *	three possibilities and a separate split ratio can be specified for
- *	each: [0] The node that split is the left-most node at its level of
- *	the tree, [1] the node that split has left and right siblings, [2]
- *	the node that split is the right-most node at its level of the tree.
- *	When a node is an only node at its level then we use the right-most
- *	rule.  If SPLIT_RATIOS is null then default values are used.
- *
- * 	Robb Matzke, 1999-07-28
- *	The ADDR argument is passed by value. The NEW_NODE argument is
- *	renamed NEW_NODE_P
- *
- *      John Mainzer, 6/9/05
- *      Modified the function to use the new dirtied parameter of
- *      of H5AC_unprotect() instead of modifying the is_dirty
- *      field of the cache info.
- *
  *-------------------------------------------------------------------------
  */
 static H5B_ins_t
@@ -880,17 +795,17 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
     /*
      * Check arguments
      */
-    assert(f);
-    assert(H5F_addr_defined(addr));
-    assert(type);
-    assert(type->decode);
-    assert(type->cmp3);
-    assert(type->new_node);
-    assert(lt_key);
-    assert(lt_key_changed);
-    assert(rt_key);
-    assert(rt_key_changed);
-    assert(new_node_p);
+    HDassert(f);
+    HDassert(H5F_addr_defined(addr));
+    HDassert(type);
+    HDassert(type->decode);
+    HDassert(type->cmp3);
+    HDassert(type->new_node);
+    HDassert(lt_key);
+    HDassert(lt_key_changed);
+    HDassert(rt_key);
+    HDassert(rt_key_changed);
+    HDassert(new_node_p);
 
     *lt_key_changed = FALSE;
     *rt_key_changed = FALSE;
@@ -901,63 +816,61 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
      * should get the new data.
      */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_WRITE)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to load node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to load node")
     shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
     rt = bt->nchildren;
 
-    while (lt < rt && cmp) {
+    while(lt < rt && cmp) {
 	idx = (lt + rt) / 2;
-	if ((cmp = (type->cmp3)(f, dxpl_id, H5B_NKEY(bt,shared,idx), udata, H5B_NKEY(bt,shared,idx+1))) < 0) {
+	if((cmp = (type->cmp3)(f, dxpl_id, H5B_NKEY(bt, shared, idx), udata, H5B_NKEY(bt, shared, idx + 1))) < 0)
 	    rt = idx;
-	} else {
+	else
 	    lt = idx + 1;
-	}
-    }
+    } /* end while */
 
-    if (0 == bt->nchildren) {
+    if(0 == bt->nchildren) {
 	/*
 	 * The value being inserted will be the only value in this tree. We
 	 * must necessarily be at level zero.
 	 */
-	assert(0 == bt->level);
-	if ((type->new_node)(f, dxpl_id, H5B_INS_FIRST, H5B_NKEY(bt,shared,0), udata,
-			     H5B_NKEY(bt,shared,1), bt->child + 0/*out*/) < 0)
+	HDassert(0 == bt->level);
+	if((type->new_node)(f, dxpl_id, H5B_INS_FIRST, H5B_NKEY(bt, shared, 0), udata,
+			     H5B_NKEY(bt, shared, 1), bt->child + 0/*out*/) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, H5B_INS_ERROR, "unable to create leaf node")
 	bt->nchildren = 1;
         bt_flags |= H5AC__DIRTIED_FLAG;
 	idx = 0;
 
-	if (type->follow_min) {
-	    if ((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt,shared,idx),
-                     lt_key_changed, md_key, udata, H5B_NKEY(bt,shared,idx+1),
+	if(type->follow_min) {
+	    if((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt, shared, idx),
+                     lt_key_changed, md_key, udata, H5B_NKEY(bt, shared, idx + 1),
                      rt_key_changed, &child_addr/*out*/)) < 0)
 		HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "unable to insert first leaf node")
-	} else {
+	} /* end if */
+        else
 	    my_ins = H5B_INS_NOOP;
-	}
-
-    } else if (cmp < 0 && idx == 0 && bt->level > 0) {
+    } else if(cmp < 0 && idx == 0 && bt->level > 0) {
 	/*
 	 * The value being inserted is less than any value in this tree.
 	 * Follow the minimum branch out of this node to a subtree.
 	 */
-	if ((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
+	if((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
                 H5B_NKEY(bt,shared,idx), lt_key_changed, md_key,
-                udata, H5B_NKEY(bt,shared,idx+1), rt_key_changed,
-                &child_addr/*out*/))<0)
+                udata, H5B_NKEY(bt, shared, idx + 1), rt_key_changed,
+                &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert minimum subtree")
-    } else if (cmp < 0 && idx == 0 && type->follow_min) {
+    } else if(cmp < 0 && idx == 0 && type->follow_min) {
 	/*
 	 * The value being inserted is less than any leaf node out of this
 	 * current node.  Follow the minimum branch to a leaf node and let the
 	 * subclass handle the problem.
 	 */
-	if ((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt,shared,idx),
-                 lt_key_changed, md_key, udata, H5B_NKEY(bt,shared,idx+1),
+	if((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt, shared, idx),
+                 lt_key_changed, md_key, udata, H5B_NKEY(bt, shared, idx + 1),
                  rt_key_changed, &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert minimum leaf node")
-    } else if (cmp < 0 && idx == 0) {
+    } else if(cmp < 0 && idx == 0) {
 	/*
 	 * The value being inserted is less than any leaf node out of the
 	 * current node. Create a new minimum leaf node out of this B-tree
@@ -965,33 +878,32 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 	 */
 	my_ins = H5B_INS_LEFT;
 	HDmemcpy(md_key, H5B_NKEY(bt,shared,idx), type->sizeof_nkey);
-	if ((type->new_node)(f, dxpl_id, H5B_INS_LEFT, H5B_NKEY(bt,shared,idx), udata,
-			     md_key, &child_addr/*out*/) < 0)
+	if((type->new_node)(f, dxpl_id, H5B_INS_LEFT, H5B_NKEY(bt, shared, idx), udata,
+                 md_key, &child_addr/*out*/) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert minimum leaf node")
 	*lt_key_changed = TRUE;
-
-    } else if (cmp > 0 && idx + 1 >= bt->nchildren && bt->level > 0) {
+    } else if(cmp > 0 && idx + 1 >= bt->nchildren && bt->level > 0) {
 	/*
 	 * The value being inserted is larger than any value in this tree.
 	 * Follow the maximum branch out of this node to a subtree.
 	 */
 	idx = bt->nchildren - 1;
-	if ((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
-                H5B_NKEY(bt,shared,idx), lt_key_changed, md_key, udata,
-                H5B_NKEY(bt,shared,idx+1), rt_key_changed, &child_addr/*out*/)) < 0)
+	if((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
+                H5B_NKEY(bt, shared, idx), lt_key_changed, md_key, udata,
+                H5B_NKEY(bt, shared, idx + 1), rt_key_changed, &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert maximum subtree")
-    } else if (cmp > 0 && idx + 1 >= bt->nchildren && type->follow_max) {
+    } else if(cmp > 0 && idx + 1 >= bt->nchildren && type->follow_max) {
 	/*
 	 * The value being inserted is larger than any leaf node out of the
 	 * current node.  Follow the maximum branch to a leaf node and let the
 	 * subclass handle the problem.
 	 */
 	idx = bt->nchildren - 1;
-	if ((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt,shared,idx),
-                 lt_key_changed, md_key, udata, H5B_NKEY(bt,shared,idx+1),
+	if((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt, shared, idx),
+                 lt_key_changed, md_key, udata, H5B_NKEY(bt, shared, idx + 1),
                  rt_key_changed, &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert maximum leaf node")
-    } else if (cmp > 0 && idx + 1 >= bt->nchildren) {
+    } else if(cmp > 0 && idx + 1 >= bt->nchildren) {
 	/*
 	 * The value being inserted is larger than any leaf node out of the
 	 * current node.  Create a new maximum leaf node out of this B-tree
@@ -999,80 +911,78 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 	 */
 	idx = bt->nchildren - 1;
 	my_ins = H5B_INS_RIGHT;
-	HDmemcpy(md_key, H5B_NKEY(bt,shared,idx+1), type->sizeof_nkey);
-	if ((type->new_node)(f, dxpl_id, H5B_INS_RIGHT, md_key, udata,
-			     H5B_NKEY(bt,shared,idx+1), &child_addr/*out*/) < 0)
+	HDmemcpy(md_key, H5B_NKEY(bt, shared, idx + 1), type->sizeof_nkey);
+	if((type->new_node)(f, dxpl_id, H5B_INS_RIGHT, md_key, udata,
+                H5B_NKEY(bt, shared, idx + 1), &child_addr/*out*/) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert maximum leaf node")
 	*rt_key_changed = TRUE;
-
-    } else if (cmp) {
+    } else if(cmp) {
 	/*
 	 * We couldn't figure out which branch to follow out of this node. THIS
 	 * IS A MAJOR PROBLEM THAT NEEDS TO BE FIXED --rpm.
 	 */
-	assert("INTERNAL HDF5 ERROR (contact rpm)" && 0);
+	HDassert("INTERNAL HDF5 ERROR (contact rpm)" && 0);
 #ifdef NDEBUG
 	HDabort();
 #endif /* NDEBUG */
-    } else if (bt->level > 0) {
+    } else if(bt->level > 0) {
 	/*
 	 * Follow a branch out of this node to another subtree.
 	 */
-	assert(idx < bt->nchildren);
-	if ((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
-                H5B_NKEY(bt,shared,idx), lt_key_changed, md_key, udata,
-                H5B_NKEY(bt,shared,idx+1), rt_key_changed, &child_addr/*out*/)) < 0)
+	HDassert(idx < bt->nchildren);
+	if((int)(my_ins = H5B_insert_helper(f, dxpl_id, bt->child[idx], type,
+                H5B_NKEY(bt, shared, idx), lt_key_changed, md_key, udata,
+                H5B_NKEY(bt, shared, idx + 1), rt_key_changed, &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert subtree")
     } else {
 	/*
 	 * Follow a branch out of this node to a leaf node of some other type.
 	 */
-	assert(idx < bt->nchildren);
-	if ((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt,shared,idx),
-                  lt_key_changed, md_key, udata, H5B_NKEY(bt,shared,idx+1),
+	HDassert(idx < bt->nchildren);
+	if((int)(my_ins = (type->insert)(f, dxpl_id, bt->child[idx], H5B_NKEY(bt, shared, idx),
+                  lt_key_changed, md_key, udata, H5B_NKEY(bt, shared, idx + 1),
                   rt_key_changed, &child_addr/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert leaf node")
     }
-    assert((int)my_ins >= 0);
+    HDassert((int)my_ins >= 0);
 
     /*
      * Update the left and right keys of the current node.
      */
-    if (*lt_key_changed) {
+    if(*lt_key_changed) {
         bt_flags |= H5AC__DIRTIED_FLAG;
-	if (idx > 0)
+	if(idx > 0)
 	    *lt_key_changed = FALSE;
 	else
-	    HDmemcpy(lt_key, H5B_NKEY(bt,shared,idx), type->sizeof_nkey);
-    }
-    if (*rt_key_changed) {
+	    HDmemcpy(lt_key, H5B_NKEY(bt, shared, idx), type->sizeof_nkey);
+    } /* end if */
+    if(*rt_key_changed) {
         bt_flags |= H5AC__DIRTIED_FLAG;
-	if (idx+1 < bt->nchildren)
+	if(idx + 1 < bt->nchildren)
 	    *rt_key_changed = FALSE;
 	else
-	    HDmemcpy(rt_key, H5B_NKEY(bt,shared,idx+1), type->sizeof_nkey);
-    }
-    if (H5B_INS_CHANGE == my_ins) {
+	    HDmemcpy(rt_key, H5B_NKEY(bt, shared, idx + 1), type->sizeof_nkey);
+    } /* end if */
+    if(H5B_INS_CHANGE == my_ins) {
 	/*
 	 * The insertion simply changed the address for the child.
 	 */
 	bt->child[idx] = child_addr;
         bt_flags |= H5AC__DIRTIED_FLAG;
 	ret_value = H5B_INS_NOOP;
-
-    } else if (H5B_INS_LEFT == my_ins || H5B_INS_RIGHT == my_ins) {
+    } else if(H5B_INS_LEFT == my_ins || H5B_INS_RIGHT == my_ins) {
         hbool_t *tmp_bt_flags_ptr = NULL;
         H5B_t	*tmp_bt;
 
 	/*
 	 * If this node is full then split it before inserting the new child.
 	 */
-	if (bt->nchildren == shared->two_k) {
-	    if (H5B_split(f, dxpl_id, bt, &bt_flags, addr, idx, udata, new_node_p/*out*/)<0)
+	if(bt->nchildren == shared->two_k) {
+	    if(H5B_split(f, dxpl_id, bt, &bt_flags, addr, idx, udata, new_node_p/*out*/) < 0)
 		HGOTO_ERROR(H5E_BTREE, H5E_CANTSPLIT, H5B_INS_ERROR, "unable to split node")
-	    if (NULL == (twin = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, *new_node_p, type, udata, H5AC_WRITE)))
-		HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to load node")
-	    if (idx<bt->nchildren) {
+	    if(NULL == (twin = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, *new_node_p, type, udata, H5AC_WRITE)))
+		HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to load node")
+	    if(idx < bt->nchildren) {
 		tmp_bt = bt;
                 tmp_bt_flags_ptr = &bt_flags;
 	    } else {
@@ -1080,13 +990,14 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 		tmp_bt = twin;
                 tmp_bt_flags_ptr = &twin_flags;
 	    }
-	} else {
+	} /* end if */
+        else {
 	    tmp_bt = bt;
             tmp_bt_flags_ptr = &bt_flags;
-	}
+	} /* end else */
 
 	/* Insert the child */
-	if (H5B_insert_child(tmp_bt, tmp_bt_flags_ptr, idx, child_addr, my_ins, md_key) < 0)
+	if(H5B_insert_child(tmp_bt, tmp_bt_flags_ptr, idx, child_addr, my_ins, md_key) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, H5B_INS_ERROR, "can't insert child")
     }
 
@@ -1094,28 +1005,28 @@ H5B_insert_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
      * If this node split, return the mid key (the one that is shared
      * by the left and right node).
      */
-    if (twin) {
-	HDmemcpy(md_key, H5B_NKEY(twin,shared,0), type->sizeof_nkey);
+    if(twin) {
+	HDmemcpy(md_key, H5B_NKEY(twin, shared, 0), type->sizeof_nkey);
 	ret_value = H5B_INS_RIGHT;
 #ifdef H5B_DEBUG
 	/*
 	 * The max key in the original left node must be equal to the min key
 	 * in the new node.
 	 */
-	cmp = (type->cmp2)(f, dxpl_id, H5B_NKEY(bt,shared,bt->nchildren), udata,
-			    H5B_NKEY(twin,shared,0));
-	assert(0 == cmp);
+	cmp = (type->cmp2)(f, dxpl_id, H5B_NKEY(bt, shared, bt->nchildren), udata,
+			    H5B_NKEY(twin, shared, 0));
+	HDassert(0 == cmp);
 #endif
-    } else {
+    } /* end if */
+    else
 	ret_value = H5B_INS_NOOP;
-    }
 
 done:
     {
 	herr_t e1 = (bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, bt_flags) < 0);
 	herr_t e2 = (twin && H5AC_unprotect(f, dxpl_id, H5AC_BT, *new_node_p, twin, twin_flags) < 0);
-	if (e1 || e2)  /*use vars to prevent short-circuit of side effects */
-	    HDONE_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node(s)")
+	if(e1 || e2)  /*use vars to prevent short-circuit of side effects */
+	    HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node(s)")
     }
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -1158,14 +1069,14 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
 
     /* Protect the initial/current node */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_READ)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5_ITER_ERROR, "unable to load B-tree node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5_ITER_ERROR, "unable to load B-tree node")
 
     if(bt->level > 0) {
         haddr_t left_child = bt->child[0];     /* Address of left-most child in node */
 
         /* Release current node */
         if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-            HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5_ITER_ERROR, "unable to release B-tree node")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to release B-tree node")
         bt = NULL;
 
 	/* Keep following the left-most child until we reach a leaf node. */
@@ -1183,9 +1094,9 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
 
         /* Allocate space for a copy of the native records & child pointers */
         if(NULL == (native = H5FL_BLK_MALLOC(native_block, shared->sizeof_keys)))
-            HGOTO_ERROR(H5E_BTREE, H5E_NOSPACE, H5_ITER_ERROR, "memory allocation failed for shared B-tree native records")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, H5_ITER_ERROR, "memory allocation failed for shared B-tree native records")
         if(NULL == (child = H5FL_SEQ_MALLOC(haddr_t, (size_t)shared->two_k)))
-            HGOTO_ERROR(H5E_BTREE, H5E_NOSPACE, H5_ITER_ERROR, "memory allocation failed for shared B-tree child addresses")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, H5_ITER_ERROR, "memory allocation failed for shared B-tree child addresses")
 
         /* Cache information from this node */
         nchildren = bt->nchildren;
@@ -1197,7 +1108,7 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
 
         /* Release current node */
         if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-            HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5_ITER_ERROR, "unable to release B-tree node")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to release B-tree node")
         bt = NULL;
 
 	/*
@@ -1227,7 +1138,7 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
                     /* Protect the next node to the right */
                     addr = next_addr;
                     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_READ)))
-                        HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5_ITER_ERROR, "B-tree node")
+                        HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5_ITER_ERROR, "B-tree node")
 
                     /* Cache information from this node */
                     nchildren = bt->nchildren;
@@ -1239,7 +1150,7 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
 
                     /* Unprotect node */
                     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-                        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5_ITER_ERROR, "unable to release B-tree node")
+                        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to release B-tree node")
                     bt = NULL;
                 } /* end if */
                 else
@@ -1251,7 +1162,7 @@ H5B_iterate_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t add
 
 done:
     if(bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-        HDONE_ERROR(H5E_BTREE, H5E_PROTECT, H5_ITER_ERROR, "unable to release B-tree node")
+        HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to release B-tree node")
     if(native)
         (void)H5FL_BLK_FREE(native_block, native);
     if(child)
@@ -1322,15 +1233,6 @@ H5B_iterate(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
  * Programmer:	Robb Matzke
  *              Wednesday, September 16, 1998
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		The ADDR argument is passed by value.
- *
- *              John Mainzer, 6/10/05
- *              Modified the function to use the new dirtied parameter of
- *              of H5AC_unprotect() instead of modifying the is_dirty
- *              field of the cache info.
- *
  *-------------------------------------------------------------------------
  */
 static H5B_ins_t
@@ -1341,64 +1243,63 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 {
     H5B_t	*bt = NULL, *sibling = NULL;
     unsigned	bt_flags = H5AC__NO_FLAGS_SET;
-    H5B_shared_t        *shared;        /* Pointer to shared B-tree info */
-    unsigned    idx=0, lt=0, rt;        /* Final, left & right indices */
-    int         cmp=1;                  /* Key comparison value */
+    H5B_shared_t *shared;               /* Pointer to shared B-tree info */
+    unsigned    idx = 0, lt = 0, rt;    /* Final, left & right indices */
+    int         cmp = 1;                /* Key comparison value */
     H5B_ins_t	ret_value = H5B_INS_ERROR;
 
     FUNC_ENTER_NOAPI(H5B_remove_helper, H5B_INS_ERROR)
 
-    assert(f);
-    assert(H5F_addr_defined(addr));
-    assert(type);
-    assert(type->decode);
-    assert(type->cmp3);
-    assert(lt_key && lt_key_changed);
-    assert(udata);
-    assert(rt_key && rt_key_changed);
+    HDassert(f);
+    HDassert(H5F_addr_defined(addr));
+    HDassert(type);
+    HDassert(type->decode);
+    HDassert(type->cmp3);
+    HDassert(lt_key && lt_key_changed);
+    HDassert(udata);
+    HDassert(rt_key && rt_key_changed);
 
     /*
      * Perform a binary search to locate the child which contains the thing
      * for which we're searching.
      */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_WRITE)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to load B-tree node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to load B-tree node")
     shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
 
     rt = bt->nchildren;
-    while (lt<rt && cmp) {
-	idx = (lt+rt)/2;
-	if ((cmp=(type->cmp3)(f, dxpl_id, H5B_NKEY(bt,shared,idx), udata, H5B_NKEY(bt,shared,idx+1)))<0) {
+    while(lt < rt && cmp) {
+	idx = (lt + rt) / 2;
+	if((cmp = (type->cmp3)(f, dxpl_id, H5B_NKEY(bt, shared, idx), udata, H5B_NKEY(bt, shared, idx + 1))) < 0)
 	    rt = idx;
-	} else {
-	    lt = idx+1;
-	}
-    }
-    if (cmp)
+	else
+	    lt = idx + 1;
+    } /* end while */
+    if(cmp)
 	HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, H5B_INS_ERROR, "B-tree key not found")
 
     /*
      * Follow the link to the subtree or to the data node.  The return value
      * will be one of H5B_INS_ERROR, H5B_INS_NOOP, or H5B_INS_REMOVE.
      */
-    assert(idx<bt->nchildren);
-    if (bt->level>0) {
+    HDassert(idx < bt->nchildren);
+    if(bt->level > 0) {
 	/* We're at an internal node -- call recursively */
-	if ((int)(ret_value=H5B_remove_helper(f, dxpl_id,
-                 bt->child[idx], type, level+1, H5B_NKEY(bt,shared,idx)/*out*/,
-                 lt_key_changed/*out*/, udata, H5B_NKEY(bt,shared,idx+1)/*out*/,
-                 rt_key_changed/*out*/))<0)
+	if((int)(ret_value = H5B_remove_helper(f, dxpl_id,
+                 bt->child[idx], type, level + 1, H5B_NKEY(bt, shared, idx)/*out*/,
+                 lt_key_changed/*out*/, udata, H5B_NKEY(bt, shared, idx + 1)/*out*/,
+                 rt_key_changed/*out*/)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, H5B_INS_ERROR, "key not found in subtree")
-    } else if (type->remove) {
+    } else if(type->remove) {
 	/*
 	 * We're at a leaf node but the leaf node points to an object that
 	 * has a removal method.  Pass the removal request to the pointed-to
 	 * object and let it decide how to progress.
 	 */
-	if ((int)(ret_value=(type->remove)(f, dxpl_id,
-                  bt->child[idx], H5B_NKEY(bt,shared,idx), lt_key_changed, udata,
-                  H5B_NKEY(bt,shared,idx+1), rt_key_changed))<0)
+	if((int)(ret_value = (type->remove)(f, dxpl_id,
+                  bt->child[idx], H5B_NKEY(bt, shared, idx), lt_key_changed, udata,
+                  H5B_NKEY(bt, shared, idx + 1), rt_key_changed)) < 0)
 	    HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, H5B_INS_ERROR, "key not found in leaf node")
     } else {
 	/*
@@ -1419,48 +1320,49 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
      * key changed and it's the right most key of this node we must update
      * our right key and indicate that it changed.
      */
-    if (*lt_key_changed) {
+    if(*lt_key_changed) {
         bt_flags |= H5AC__DIRTIED_FLAG;
 
-	if (idx>0)
+	if(idx > 0)
             /* Don't propagate change out of this B-tree node */
 	    *lt_key_changed = FALSE;
 	else
-	    HDmemcpy(lt_key, H5B_NKEY(bt,shared,idx), type->sizeof_nkey);
-    }
-    if (*rt_key_changed) {
+	    HDmemcpy(lt_key, H5B_NKEY(bt, shared, idx), type->sizeof_nkey);
+    } /* end if */
+    if(*rt_key_changed) {
         bt_flags |= H5AC__DIRTIED_FLAG;
-	if (idx+1<bt->nchildren) {
+	if(idx + 1 < bt->nchildren) {
             /* Don't propagate change out of this B-tree node */
 	    *rt_key_changed = FALSE;
-	} else {
-	    HDmemcpy(rt_key, H5B_NKEY(bt,shared,idx+1), type->sizeof_nkey);
+	} /* end if */
+        else {
+	    HDmemcpy(rt_key, H5B_NKEY(bt, shared, idx + 1), type->sizeof_nkey);
 
             /* Since our right key was changed, we must check for a right
              * sibling and change it's left-most key as well.
              * (Handle the ret_value==H5B_INS_REMOVE case below)
              */
-            if (ret_value!=H5B_INS_REMOVE && level>0) {
-                if (H5F_addr_defined(bt->right)) {
+            if(ret_value != H5B_INS_REMOVE && level > 0) {
+                if(H5F_addr_defined(bt->right)) {
                     if(NULL == (sibling = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, bt->right, type, udata, H5AC_WRITE)))
-                        HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to unlink node from tree")
+                        HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to unlink node from tree")
 
                     /* Make certain the native key for the right sibling is set up */
-                    HDmemcpy(H5B_NKEY(sibling,shared,0), H5B_NKEY(bt,shared,idx+1), type->sizeof_nkey);
+                    HDmemcpy(H5B_NKEY(sibling, shared, 0), H5B_NKEY(bt, shared, idx + 1), type->sizeof_nkey);
 
                     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, bt->right, sibling, H5AC__DIRTIED_FLAG) < 0)
-                        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node from tree")
-                    sibling=NULL;   /* Make certain future references will be caught */
-                }
-            }
-	}
-    }
+                        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node from tree")
+                    sibling = NULL;   /* Make certain future references will be caught */
+                } /* end if */
+            } /* end if */
+	} /* end else */
+    } /* end if */
 
     /*
      * If the subtree returned H5B_INS_REMOVE then we should remove the
      * subtree entry from the current node.  There are four cases:
      */
-    if (H5B_INS_REMOVE==ret_value && 1==bt->nchildren) {
+    if(H5B_INS_REMOVE == ret_value && 1 == bt->nchildren) {
 	/*
 	 * The subtree is the only child of this node.  Discard both
 	 * keys and the subtree pointer. Free this node (unless it's the
@@ -1468,42 +1370,42 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 	 */
         bt_flags |= H5AC__DIRTIED_FLAG;
 	bt->nchildren = 0;
-	if (level>0) {
-	    if (H5F_addr_defined(bt->left)) {
+	if(level > 0) {
+	    if(H5F_addr_defined(bt->left)) {
 		if(NULL == (sibling = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, bt->left, type, udata, H5AC_WRITE)))
-		    HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to load node from tree")
+		    HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to load node from tree")
 
 		sibling->right = bt->right;
 
                 if(H5AC_unprotect(f, dxpl_id, H5AC_BT, bt->left, sibling, H5AC__DIRTIED_FLAG) < 0)
-                    HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node from tree")
-                sibling=NULL;   /* Make certain future references will be caught */
-	    }
-	    if (H5F_addr_defined(bt->right)) {
+                    HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node from tree")
+                sibling = NULL;   /* Make certain future references will be caught */
+	    } /* end if */
+	    if(H5F_addr_defined(bt->right)) {
 		if(NULL == (sibling = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, bt->right, type, udata, H5AC_WRITE)))
-		    HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to unlink node from tree")
+		    HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to unlink node from tree")
 
                 /* Copy left-most key from deleted node to left-most key in it's right neighbor */
-                HDmemcpy(H5B_NKEY(sibling,shared,0), H5B_NKEY(bt,shared,0), type->sizeof_nkey);
+                HDmemcpy(H5B_NKEY(sibling, shared, 0), H5B_NKEY(bt, shared, 0), type->sizeof_nkey);
 
 		sibling->left = bt->left;
 
                 if(H5AC_unprotect(f, dxpl_id, H5AC_BT, bt->right, sibling, H5AC__DIRTIED_FLAG) < 0)
-                    HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node from tree")
-                sibling=NULL;   /* Make certain future references will be caught */
-	    }
+                    HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node from tree")
+                sibling = NULL;   /* Make certain future references will be caught */
+	    } /* end if */
 	    bt->left = HADDR_UNDEF;
 	    bt->right = HADDR_UNDEF;
-            H5_CHECK_OVERFLOW(shared->sizeof_rnode,size_t,hsize_t);
+            H5_CHECK_OVERFLOW(shared->sizeof_rnode, size_t, hsize_t);
 	    if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, bt_flags | H5AC__DELETED_FLAG | H5AC__FREE_FILE_SPACE_FLAG) < 0) {
 		bt = NULL;
                 bt_flags = H5AC__NO_FLAGS_SET;
-		HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to free B-tree node")
+		HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to free B-tree node")
 	    } /* end if */
 	    bt = NULL;
             bt_flags = H5AC__NO_FLAGS_SET;
 	} /* end if */
-    } else if (H5B_INS_REMOVE==ret_value && 0==idx) {
+    } else if(H5B_INS_REMOVE == ret_value && 0 == idx) {
 	/*
 	 * The subtree is the left-most child of this node. We discard the
 	 * left-most key and the left-most child (the child has already been
@@ -1516,15 +1418,14 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 
 	HDmemmove(bt->native,
 		  bt->native + type->sizeof_nkey,
-		  (bt->nchildren+1) * type->sizeof_nkey);
+		  (bt->nchildren + 1) * type->sizeof_nkey);
 	HDmemmove(bt->child,
-		  bt->child+1,
+		  bt->child + 1,
 		  bt->nchildren * sizeof(haddr_t));
-	HDmemcpy(lt_key, H5B_NKEY(bt,shared,0), type->sizeof_nkey);
+	HDmemcpy(lt_key, H5B_NKEY(bt, shared, 0), type->sizeof_nkey);
 	*lt_key_changed = TRUE;
 	ret_value = H5B_INS_NOOP;
-
-    } else if (H5B_INS_REMOVE==ret_value && idx+1==bt->nchildren) {
+    } else if(H5B_INS_REMOVE == ret_value && idx + 1 == bt->nchildren) {
 	/*
 	 * The subtree is the right-most child of this node.  We discard the
 	 * right-most key and the right-most child (the child has already been
@@ -1533,29 +1434,28 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 	 */
         bt_flags |= H5AC__DIRTIED_FLAG;
 	bt->nchildren -= 1;
-	HDmemcpy(rt_key, H5B_NKEY(bt,shared,bt->nchildren), type->sizeof_nkey);
+	HDmemcpy(rt_key, H5B_NKEY(bt, shared, bt->nchildren), type->sizeof_nkey);
 	*rt_key_changed = TRUE;
 
         /* Since our right key was changed, we must check for a right
          * sibling and change it's left-most key as well.
          * (Handle the ret_value==H5B_INS_REMOVE case below)
          */
-        if (level>0) {
-            if (H5F_addr_defined(bt->right)) {
+        if(level > 0) {
+            if(H5F_addr_defined(bt->right)) {
                 if(NULL == (sibling = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, bt->right, type, udata, H5AC_WRITE)))
-                    HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, H5B_INS_ERROR, "unable to unlink node from tree")
+                    HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, H5B_INS_ERROR, "unable to unlink node from tree")
 
-                HDmemcpy(H5B_NKEY(sibling,shared,0), H5B_NKEY(bt,shared,bt->nchildren), type->sizeof_nkey);
+                HDmemcpy(H5B_NKEY(sibling, shared, 0), H5B_NKEY(bt, shared, bt->nchildren), type->sizeof_nkey);
 
                 if(H5AC_unprotect(f, dxpl_id, H5AC_BT, bt->right, sibling, H5AC__DIRTIED_FLAG) < 0)
-                    HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node from tree")
-                sibling=NULL;   /* Make certain future references will be caught */
-            }
-        }
+                    HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node from tree")
+                sibling = NULL;   /* Make certain future references will be caught */
+            } /* end if */
+        } /* end if */
 
 	ret_value = H5B_INS_NOOP;
-
-    } else if (H5B_INS_REMOVE==ret_value) {
+    } else if(H5B_INS_REMOVE == ret_value) {
 	/*
 	 * There are subtrees out of this node to both the left and right of
 	 * the subtree being removed.  The key to the left of the subtree and
@@ -1567,20 +1467,18 @@ H5B_remove_helper(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type
 	bt->nchildren -= 1;
 
 	HDmemmove(bt->native + idx * type->sizeof_nkey,
-		  bt->native + (idx+1) * type->sizeof_nkey,
-		  (bt->nchildren+1-idx) * type->sizeof_nkey);
-	HDmemmove(bt->child+idx,
-		  bt->child+idx+1,
-		  (bt->nchildren-idx) * sizeof(haddr_t));
+		  bt->native + (idx + 1) * type->sizeof_nkey,
+		  (bt->nchildren + 1 - idx) * type->sizeof_nkey);
+	HDmemmove(bt->child + idx,
+		  bt->child + idx + 1,
+		  (bt->nchildren - idx) * sizeof(haddr_t));
 	ret_value = H5B_INS_NOOP;
-
-    } else {
+    } else
 	ret_value = H5B_INS_NOOP;
-    }
 
 done:
     if(bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, bt_flags) < 0)
-	HDONE_ERROR(H5E_BTREE, H5E_PROTECT, H5B_INS_ERROR, "unable to release node")
+	HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, H5B_INS_ERROR, "unable to release node")
 
     FUNC_LEAVE_NOAPI(ret_value)
 }
@@ -1600,15 +1498,6 @@ done:
  * Programmer:	Robb Matzke
  *              Wednesday, September 16, 1998
  *
- * Modifications:
- *		Robb Matzke, 1999-07-28
- *		The ADDR argument is passed by value.
- *
- *              John Mainzer, 6/8/05
- *              Modified the function to use the new dirtied parameter of
- *              of H5AC_unprotect() instead of modifying the is_dirty
- *              field of the cache info.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
@@ -1627,14 +1516,14 @@ H5B_remove(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void
     FUNC_ENTER_NOAPI(H5B_remove, FAIL)
 
     /* Check args */
-    assert(f);
-    assert(type);
-    assert(type->sizeof_nkey <= sizeof _lt_key);
-    assert(H5F_addr_defined(addr));
+    HDassert(f);
+    HDassert(type);
+    HDassert(type->sizeof_nkey <= sizeof _lt_key);
+    HDassert(H5F_addr_defined(addr));
 
     /* The actual removal */
-    if (H5B_remove_helper(f, dxpl_id, addr, type, 0, lt_key, &lt_key_changed,
-			  udata, rt_key, &rt_key_changed)==H5B_INS_ERROR)
+    if(H5B_remove_helper(f, dxpl_id, addr, type, 0, lt_key, &lt_key_changed,
+			  udata, rt_key, &rt_key_changed) == H5B_INS_ERROR)
 	HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "unable to remove entry from B-tree")
 
     /*
@@ -1642,16 +1531,16 @@ H5B_remove(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void
      * being at level zero
      */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_WRITE)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree root node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree root node")
 
-    if (0==bt->nchildren && 0!=bt->level) {
+    if(0 == bt->nchildren && 0 != bt->level) {
 	bt->level = 0;
         bt_flags |= H5AC__DIRTIED_FLAG;
-    }
+    } /* end if */
 
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, bt_flags) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release node")
-    bt=NULL;    /* Make certain future references will be caught */
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release node")
+    bt = NULL;    /* Make certain future references will be caught */
 
 #ifdef H5B_DEBUG
     H5B_assert(f, dxpl_id, addr, type, udata);
@@ -1672,54 +1561,48 @@ done:
  * Programmer:	Quincey Koziol
  *              Thursday, March 20, 2003
  *
- * Modifications:
- *
- *              John Mainzer, 6/10/05
- *              Modified the function to use the new dirtied parameter of
- *              of H5AC_unprotect() instead of modifying the is_dirty
- *              field of the cache info.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
 H5B_delete(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void *udata)
 {
     H5B_t	*bt = NULL;             /* B-tree node being operated on */
-    H5B_shared_t        *shared;        /* Pointer to shared B-tree info */
+    H5B_shared_t *shared;               /* Pointer to shared B-tree info */
     unsigned    u;                      /* Local index variable */
-    herr_t      ret_value=SUCCEED;      /* Return value */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_NOAPI(H5B_delete, FAIL)
 
     /* Check args */
-    assert(f);
-    assert(type);
-    assert(H5F_addr_defined(addr));
+    HDassert(f);
+    HDassert(type);
+    HDassert(H5F_addr_defined(addr));
 
     /* Lock this B-tree node into memory for now */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, udata, H5AC_WRITE)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree node")
     shared=(H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
     HDassert(shared);
 
     /* Iterate over all children in tree, deleting them */
-    if (bt->level > 0) {
+    if(bt->level > 0) {
         /* Iterate over all children in node, deleting them */
-        for (u=0; u<bt->nchildren; u++)
-            if (H5B_delete(f, dxpl_id, type, bt->child[u], udata)<0)
+        for(u = 0; u < bt->nchildren; u++)
+            if(H5B_delete(f, dxpl_id, type, bt->child[u], udata) < 0)
                 HGOTO_ERROR(H5E_BTREE, H5E_CANTLIST, FAIL, "unable to delete B-tree node")
 
-    } else {
+    } /* end if */
+    else {
         hbool_t lt_key_changed, rt_key_changed; /* Whether key changed (unused here, just for callback) */
 
         /* Check for removal callback */
         if(type->remove) {
             /* Iterate over all entries in node, calling callback */
-            for (u=0; u<bt->nchildren; u++) {
+            for(u = 0; u < bt->nchildren; u++) {
                 /* Call user's callback for each entry */
-                if ((type->remove)(f, dxpl_id,
-                          bt->child[u], H5B_NKEY(bt,shared,u), &lt_key_changed, udata,
-                          H5B_NKEY(bt,shared,u+1), &rt_key_changed)<H5B_INS_NOOP)
+                if((type->remove)(f, dxpl_id,
+                          bt->child[u], H5B_NKEY(bt, shared, u), &lt_key_changed, udata,
+                          H5B_NKEY(bt, shared, u + 1), &rt_key_changed) < H5B_INS_NOOP)
                     HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "can't remove B-tree node")
             } /* end for */
         } /* end if */
@@ -1727,7 +1610,7 @@ H5B_delete(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr, void
 
 done:
     if(bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__DELETED_FLAG | H5AC__FREE_FILE_SPACE_FLAG) < 0)
-        HDONE_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node in cache")
+        HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node in cache")
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5B_delete() */
@@ -1851,8 +1734,6 @@ H5B_shared_free(void *_shared)
  *		koziol@ncsa.uiuc.edu
  *		Apr 18 2000
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static H5B_t *
@@ -1873,7 +1754,7 @@ H5B_copy(const H5B_t *old_bt)
 
     /* Allocate memory for the new H5B_t object */
     if(NULL == (new_node = H5FL_MALLOC(H5B_t)))
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for B-tree root node")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, NULL, "memory allocation failed for B-tree root node")
 
     /* Copy the main structure */
     HDmemcpy(new_node, old_bt, sizeof(H5B_t));
@@ -1883,7 +1764,7 @@ H5B_copy(const H5B_t *old_bt)
 
     if(NULL == (new_node->native = H5FL_BLK_MALLOC(native_block, shared->sizeof_keys)) ||
             NULL == (new_node->child = H5FL_SEQ_MALLOC(haddr_t, (size_t)shared->two_k)))
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for B-tree root node")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, NULL, "memory allocation failed for B-tree root node")
 
     /* Copy the other structures */
     HDmemcpy(new_node->native, old_bt->native, shared->sizeof_keys);
@@ -1947,7 +1828,7 @@ H5B_get_info_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t ad
 
     /* Protect the initial/current node */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, info_udata->udata, H5AC_READ)))
-	HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree node")
+	HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree node")
 
     /* Get the shared B-tree information */
     shared = (H5B_shared_t *)H5RC_GET_OBJ(bt->rc_shared);
@@ -1967,7 +1848,7 @@ H5B_get_info_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t ad
 
     /* Release current node */
     if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-        HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node")
+        HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
     bt = NULL;
 
     /*
@@ -1978,7 +1859,7 @@ H5B_get_info_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t ad
         /* Protect the next node to the right */
         addr = next_addr;
         if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, info_udata->udata, H5AC_READ)))
-            HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "B-tree node")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "B-tree node")
 
         /* Cache information from this node */
         next_addr = bt->right;
@@ -1989,7 +1870,7 @@ H5B_get_info_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t ad
 
         /* Unprotect node */
         if(H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-            HGOTO_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node")
+            HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
         bt = NULL;
     } /* end while */
 
@@ -2002,7 +1883,7 @@ H5B_get_info_helper(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t ad
 
 done:
     if(bt && H5AC_unprotect(f, dxpl_id, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
-        HDONE_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release B-tree node")
+        HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5B_get_info_helper() */
@@ -2087,7 +1968,7 @@ H5B_valid(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr)
     HDassert(type);
 
     if(!H5F_addr_defined(addr))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "address is undefined")
+        HGOTO_ERROR(H5E_BTREE, H5E_BADVALUE, FAIL, "address is undefined")
 
     /* Protect the node */
     if(NULL == (bt = (H5B_t *)H5AC_protect(f, dxpl_id, H5AC_BT, addr, type, NULL, H5AC_READ)))