Merge pull request #991 in HDFFV/hdf5 from merge_func_enter_vol to develop

Commit API context and related changes

* commit '01a783dbee8160641a5a682f2116ffbd1ac123fe':
  Correct errors with non-"instrumented library" builds (production & parallel, generally speaking).
  Update java error stack tests
  Revert using H5MF_sect_small_can_shrink and H5MF_sect_small_shrink for the file's free space manager (and add a comment about them).
  Add comment for the file flush when the file low / high bounds are changed after a file is open.
  Expanded comments abuot H5CX_t fields.
  Add an assert to verify that we don't write when between MPI_Barrier() calls during a flush.
  Add comments for internal structs.
  Remove redundant 'is_collective' parameter from H5CX_set_loc.
  Correct typo in comment.
  Revert some tangential code cleanups.
  Add API context source files to CMake configuration file.
  Corrections for parallel I/O & tests.
  Update handling of reporting for breaking collective I/O when the default DXPL is used.
  Update encoded DXPLs to reflect changes in properties.
  Correct typo for error checking malloc return value.
  Refactor H5CX code to reduce duplication.
  Cleanup API context function usage.
  Add API context interface and use it throughout the library.

1 files changed, 99 insertions, 132 deletions

diff --git a/src/H5Gdense.c b/src/H5Gdense.c
index de11541..326561a 100644
--- a/src/H5Gdense.c
+++ b/src/H5Gdense.c
@@ -83,7 +83,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
     H5HF_t      *fheap;                 /* Fractal heap handle               */
     hsize_t     count;                  /* # of links examined               */
 
@@ -103,7 +102,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
 
     /* upward */
     H5O_link_t  *lnk;                   /* Copy of link                      */
@@ -129,7 +127,6 @@ typedef struct {
 typedef struct {
     /* downward */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
     haddr_t     corder_bt2_addr;        /* Address of v2 B-tree indexing creation order */
     H5RS_str_t *grp_full_path_r;        /* Full path of group where link is removed */
     hbool_t     replace_names;          /* Whether to replace the names of open objects */
@@ -142,7 +139,6 @@ typedef struct {
 typedef struct {
     /* downward */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
     H5HF_t      *fheap;                 /* Fractal heap handle               */
     H5_index_t idx_type;                /* Primary index for removing link */
     haddr_t     other_bt2_addr;         /* Address of "other" v2 B-tree indexing link */
@@ -156,7 +152,6 @@ typedef struct {
 typedef struct {
     /* downward */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
 
     /* upward */
     H5O_link_t *lnk;                    /* Pointer to link to remove */
@@ -169,7 +164,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
     H5HF_t      *fheap;                 /* Fractal heap handle               */
 
     /* downward (from application) */
@@ -187,7 +181,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
 
     /* downward (from application) */
     char        *name;                  /* Name buffer to fill               */
@@ -204,7 +197,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
     H5HF_t      *fheap;                 /* Fractal heap handle               */
 
     /* upward */
@@ -218,7 +210,6 @@ typedef struct {
 typedef struct {
     /* downward (internal) */
     H5F_t       *f;                     /* Pointer to file that fractal heap is in */
-    hid_t       dxpl_id;                /* DXPL for operation                */
 
     /* upward */
     H5O_link_t  *lnk;                   /* Pointer to link                   */
@@ -265,8 +256,7 @@ typedef struct {
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_create(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
-    const H5O_pline_t *pline)
+H5G__dense_create(H5F_t *f, H5O_linfo_t *linfo, const H5O_pline_t *pline)
 {
     H5HF_create_t fheap_cparam;         /* Fractal heap creation parameters */
     H5B2_create_t bt2_cparam;           /* v2 B-tree creation parameters */
@@ -298,7 +288,7 @@ H5G__dense_create(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
         fheap_cparam.pline = *pline;
 
     /* Create fractal heap for storing links */
-    if(NULL == (fheap = H5HF_create(f, dxpl_id, &fheap_cparam)))
+    if(NULL == (fheap = H5HF_create(f, &fheap_cparam)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create fractal heap")
 
     /* Retrieve the heap's address in the file */
@@ -325,7 +315,7 @@ HDfprintf(stderr, "%s: fheap_id_len = %Zu\n", FUNC, fheap_id_len);
             (uint32_t)fheap_id_len;     /* Fractal heap ID */
     bt2_cparam.split_percent = H5G_NAME_BT2_SPLIT_PERC;
     bt2_cparam.merge_percent = H5G_NAME_BT2_MERGE_PERC;
-    if(NULL == (bt2_name = H5B2_create(f, dxpl_id, &bt2_cparam, NULL)))
+    if(NULL == (bt2_name = H5B2_create(f, &bt2_cparam, NULL)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create v2 B-tree for name index")
 
     /* Retrieve the v2 B-tree's address in the file */
@@ -346,7 +336,7 @@ HDfprintf(stderr, "%s: linfo->name_bt2_addr = %a\n", FUNC, linfo->name_bt2_addr)
                 (uint32_t)fheap_id_len;         /* Fractal heap ID */
         bt2_cparam.split_percent = H5G_CORDER_BT2_SPLIT_PERC;
         bt2_cparam.merge_percent = H5G_CORDER_BT2_MERGE_PERC;
-        if(NULL == (bt2_corder = H5B2_create(f, dxpl_id, &bt2_cparam, NULL)))
+        if(NULL == (bt2_corder = H5B2_create(f, &bt2_cparam, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create v2 B-tree for creation order index")
 
         /* Retrieve the v2 B-tree's address in the file */
@@ -359,11 +349,11 @@ HDfprintf(stderr, "%s: linfo->corder_bt2_addr = %a\n", FUNC, linfo->corder_bt2_a
 
 done:
     /* Close the open objects */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2_name && H5B2_close(bt2_name, dxpl_id) < 0)
+    if(bt2_name && H5B2_close(bt2_name) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for name index")
-    if(bt2_corder && H5B2_close(bt2_corder, dxpl_id) < 0)
+    if(bt2_corder && H5B2_close(bt2_corder) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for creation order index")
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -384,8 +374,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_insert(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    const H5O_link_t *lnk)
+H5G__dense_insert(H5F_t *f, const H5O_linfo_t *linfo, const H5O_link_t *lnk)
 {
     H5G_bt2_ud_ins_t udata;             /* User data for v2 B-tree insertion */
     H5HF_t *fheap = NULL;               /* Fractal heap handle */
@@ -430,20 +419,19 @@ HDfprintf(stderr, "%s: HDstrlen(lnk->name) = %Zu, link_size = %Zu\n", FUNC, HDst
 	HGOTO_ERROR(H5E_SYM, H5E_CANTENCODE, FAIL, "can't encode link")
 
     /* Open the fractal heap */
-    if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+    if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
     /* Insert the serialized link into the fractal heap */
-    if(H5HF_insert(fheap, dxpl_id, link_size, link_ptr, udata.id) < 0)
+    if(H5HF_insert(fheap, link_size, link_ptr, udata.id) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to insert link into fractal heap")
 
     /* Open the name index v2 B-tree */
-    if(NULL == (bt2_name = H5B2_open(f, dxpl_id, linfo->name_bt2_addr, NULL)))
+    if(NULL == (bt2_name = H5B2_open(f, linfo->name_bt2_addr, NULL)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index")
 
     /* Create the callback information for v2 B-tree record insertion */
     udata.common.f = f;
-    udata.common.dxpl_id = dxpl_id;
     udata.common.fheap = fheap;
     udata.common.name = lnk->name;
     udata.common.name_hash = H5_checksum_lookup3(lnk->name, HDstrlen(lnk->name), 0);
@@ -453,28 +441,28 @@ HDfprintf(stderr, "%s: HDstrlen(lnk->name) = %Zu, link_size = %Zu\n", FUNC, HDst
     /* udata.id already set in H5HF_insert() call */
 
     /* Insert link into 'name' tracking v2 B-tree */
-    if(H5B2_insert(bt2_name, dxpl_id, &udata) < 0)
+    if(H5B2_insert(bt2_name, &udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to insert record into v2 B-tree")
 
     /* Check if we should create a creation order index v2 B-tree record */
     if(linfo->index_corder) {
         /* Open the creation order index v2 B-tree */
         HDassert(H5F_addr_defined(linfo->corder_bt2_addr));
-        if(NULL == (bt2_corder = H5B2_open(f, dxpl_id, linfo->corder_bt2_addr, NULL)))
+        if(NULL == (bt2_corder = H5B2_open(f, linfo->corder_bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for creation order index")
 
         /* Insert the record into the creation order index v2 B-tree */
-        if(H5B2_insert(bt2_corder, dxpl_id, &udata) < 0)
+        if(H5B2_insert(bt2_corder, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to insert record into v2 B-tree")
     } /* end if */
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2_name && H5B2_close(bt2_name, dxpl_id) < 0)
+    if(bt2_name && H5B2_close(bt2_name) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for name index")
-    if(bt2_corder && H5B2_close(bt2_corder, dxpl_id) < 0)
+    if(bt2_corder && H5B2_close(bt2_corder) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for creation order index")
     if(wb && H5WB_unwrap(wb) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close wrapped buffer")
@@ -534,8 +522,8 @@ done:
  *-------------------------------------------------------------------------
  */
 htri_t
-H5G__dense_lookup(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    const char *name, H5O_link_t *lnk)
+H5G__dense_lookup(H5F_t *f, const H5O_linfo_t *linfo, const char *name,
+    H5O_link_t *lnk)
 {
     H5G_bt2_ud_common_t udata;          /* User data for v2 B-tree link lookup */
     H5HF_t *fheap = NULL;               /* Fractal heap handle */
@@ -553,16 +541,15 @@ H5G__dense_lookup(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
     HDassert(lnk);
 
     /* Open the fractal heap */
-    if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+    if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
     /* Open the name index v2 B-tree */
-    if(NULL == (bt2_name = H5B2_open(f, dxpl_id, linfo->name_bt2_addr, NULL)))
+    if(NULL == (bt2_name = H5B2_open(f, linfo->name_bt2_addr, NULL)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index")
 
     /* Construct the user data for v2 B-tree callback */
     udata.f = f;
-    udata.dxpl_id = dxpl_id;
     udata.fheap = fheap;
     udata.name = name;
     udata.name_hash = H5_checksum_lookup3(name, HDstrlen(name), 0);
@@ -570,14 +557,14 @@ H5G__dense_lookup(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
     udata.found_op_data = lnk;
 
     /* Find & copy the named link in the 'name' index */
-    if((ret_value = H5B2_find(bt2_name, dxpl_id, &udata, NULL, NULL)) < 0)
+    if((ret_value = H5B2_find(bt2_name, &udata, NULL, NULL)) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to locate link in name index")
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2_name && H5B2_close(bt2_name, dxpl_id) < 0)
+    if(bt2_name && H5B2_close(bt2_name) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for name index")
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -608,7 +595,7 @@ H5G_dense_lookup_by_idx_fh_cb(const void *obj, size_t obj_len, void *_udata)
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Decode link information & keep a copy */
-    if(NULL == (tmp_lnk = (H5O_link_t *)H5O_msg_decode(udata->f, udata->dxpl_id, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
+    if(NULL == (tmp_lnk = (H5O_link_t *)H5O_msg_decode(udata->f, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTDECODE, FAIL, "can't decode link")
 
     /* Copy link information */
@@ -650,12 +637,10 @@ H5G_dense_lookup_by_idx_bt2_cb(const void *_record, void *_bt2_udata)
     /* Prepare user data for callback */
     /* down */
     fh_udata.f = bt2_udata->f;
-    fh_udata.dxpl_id = bt2_udata->dxpl_id;
     fh_udata.lnk = bt2_udata->lnk;
 
     /* Call fractal heap 'op' routine, to copy the link information */
-    if(H5HF_op(bt2_udata->fheap, bt2_udata->dxpl_id, record->id,
-            H5G_dense_lookup_by_idx_fh_cb, &fh_udata) < 0)
+    if(H5HF_op(bt2_udata->fheap, record->id, H5G_dense_lookup_by_idx_fh_cb, &fh_udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPERATE, H5_ITER_ERROR, "link found callback failed")
 
 done:
@@ -678,7 +663,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_lookup_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
+H5G__dense_lookup_by_idx(H5F_t *f, const H5O_linfo_t *linfo,
     H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5O_link_t *lnk)
 {
     H5HF_t *fheap = NULL;                     /* Fractal heap handle */
@@ -729,26 +714,25 @@ H5G__dense_lookup_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
         H5G_bt2_ud_lbi_t udata;        /* User data for v2 B-tree link lookup */
 
         /* Open the fractal heap */
-        if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+        if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
         /* Open the index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(f, dxpl_id, bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(f, bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for index")
 
         /* Construct the user data for v2 B-tree callback */
         udata.f = f;
-        udata.dxpl_id = dxpl_id;
         udata.fheap = fheap;
         udata.lnk = lnk;
 
         /* Find & copy the link in the appropriate index */
-        if(H5B2_index(bt2, dxpl_id, order, n, H5G_dense_lookup_by_idx_bt2_cb, &udata) < 0)
+        if(H5B2_index(bt2, order, n, H5G_dense_lookup_by_idx_bt2_cb, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to locate link in index")
     } /* end if */
     else {      /* Otherwise, we need to build a table of the links and sort it */
         /* Build the table of links for this group */
-        if(H5G__dense_build_table(f, dxpl_id, linfo, idx_type, order, &ltable) < 0)
+        if(H5G__dense_build_table(f, linfo, idx_type, order, &ltable) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "error building table of links")
 
         /* Check for going out of bounds */
@@ -762,9 +746,9 @@ H5G__dense_lookup_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2 && H5B2_close(bt2, dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for index")
     if(ltable.lnks && H5G__link_release_table(&ltable) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
@@ -830,8 +814,8 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_build_table(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    H5_index_t idx_type, H5_iter_order_t order, H5G_link_table_t *ltable)
+H5G__dense_build_table(H5F_t *f, const H5O_linfo_t *linfo, H5_index_t idx_type,
+    H5_iter_order_t order, H5G_link_table_t *ltable)
 {
     herr_t	ret_value = SUCCEED;    /* Return value */
 
@@ -859,7 +843,7 @@ H5G__dense_build_table(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
         udata.curr_lnk = 0;
 
         /* Iterate over the links in the group, building a table of the link messages */
-        if(H5G__dense_iterate(f, dxpl_id, linfo, H5_INDEX_NAME, H5_ITER_NATIVE, (hsize_t)0, NULL, H5G_dense_build_table_cb, &udata) < 0)
+        if(H5G__dense_iterate(f, linfo, H5_INDEX_NAME, H5_ITER_NATIVE, (hsize_t)0, NULL, H5G_dense_build_table_cb, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTNEXT, FAIL, "error iterating over links")
 
         /* Sort link table in correct iteration order */
@@ -903,7 +887,7 @@ H5G_dense_iterate_fh_cb(const void *obj, size_t obj_len, void *_udata)
      *  HDF5 routine, it could attempt to re-protect that direct block for the
      *  heap, causing the HDF5 routine called to fail - QAK)
      */
-    if(NULL == (udata->lnk = (H5O_link_t *)H5O_msg_decode(udata->f, udata->dxpl_id, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
+    if(NULL == (udata->lnk = (H5O_link_t *)H5O_msg_decode(udata->f, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTDECODE, FAIL, "can't decode link")
 
 done:
@@ -942,11 +926,9 @@ H5G_dense_iterate_bt2_cb(const void *_record, void *_bt2_udata)
         /* Prepare user data for callback */
         /* down */
         fh_udata.f = bt2_udata->f;
-        fh_udata.dxpl_id = bt2_udata->dxpl_id;
 
         /* Call fractal heap 'op' routine, to copy the link information */
-        if(H5HF_op(bt2_udata->fheap, bt2_udata->dxpl_id, record->id,
-                H5G_dense_iterate_fh_cb, &fh_udata) < 0)
+        if(H5HF_op(bt2_udata->fheap, record->id, H5G_dense_iterate_fh_cb, &fh_udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPERATE, H5_ITER_ERROR, "heap op callback failed")
 
         /* Make the callback */
@@ -983,9 +965,9 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_iterate(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_lnk,
-    H5G_lib_iterate_t op, void *op_data)
+H5G__dense_iterate(H5F_t *f, const H5O_linfo_t *linfo, H5_index_t idx_type,
+    H5_iter_order_t order, hsize_t skip, hsize_t *last_lnk, H5G_lib_iterate_t op,
+    void *op_data)
 {
     H5HF_t *fheap = NULL;               /* Fractal heap handle */
     H5G_link_table_t ltable = {0, NULL};      /* Table of links */
@@ -1038,16 +1020,15 @@ H5G__dense_iterate(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
         HDassert(H5F_addr_defined(bt2_addr));
 
         /* Open the fractal heap */
-        if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+        if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
         /* Open the index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(f, dxpl_id, bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(f, bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for index")
 
         /* Construct the user data for v2 B-tree iterator callback */
         udata.f = f;
-        udata.dxpl_id = dxpl_id;
         udata.fheap = fheap;
         udata.skip = skip;
         udata.count = 0;
@@ -1056,7 +1037,7 @@ H5G__dense_iterate(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
 
         /* Iterate over the records in the v2 B-tree's "native" order */
         /* (by hash of name) */
-        if((ret_value = H5B2_iterate(bt2, dxpl_id, H5G_dense_iterate_bt2_cb, &udata)) < 0)
+        if((ret_value = H5B2_iterate(bt2, H5G_dense_iterate_bt2_cb, &udata)) < 0)
             HERROR(H5E_SYM, H5E_BADITER, "link iteration failed");
 
         /* Update the last link examined, if requested */
@@ -1065,7 +1046,7 @@ H5G__dense_iterate(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
     } /* end if */
     else {
         /* Build the table of links for this group */
-        if(H5G__dense_build_table(f, dxpl_id, linfo, idx_type, order, &ltable) < 0)
+        if(H5G__dense_build_table(f, linfo, idx_type, order, &ltable) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "error building table of links")
 
         /* Iterate over links in table */
@@ -1075,9 +1056,9 @@ H5G__dense_iterate(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2 && H5B2_close(bt2, dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for index")
     if(ltable.lnks && H5G__link_release_table(&ltable) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
@@ -1110,7 +1091,7 @@ H5G_dense_get_name_by_idx_fh_cb(const void *obj, size_t obj_len, void *_udata)
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Decode link information */
-    if(NULL == (lnk = (H5O_link_t *)H5O_msg_decode(udata->f, udata->dxpl_id, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
+    if(NULL == (lnk = (H5O_link_t *)H5O_msg_decode(udata->f, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTDECODE, FAIL, "can't decode link")
 
     /* Get the length of the name */
@@ -1157,13 +1138,11 @@ H5G_dense_get_name_by_idx_bt2_cb(const void *_record, void *_bt2_udata)
     /* Prepare user data for callback */
     /* down */
     fh_udata.f = bt2_udata->f;
-    fh_udata.dxpl_id = bt2_udata->dxpl_id;
     fh_udata.name = bt2_udata->name;
     fh_udata.name_size = bt2_udata->name_size;
 
     /* Call fractal heap 'op' routine, to perform user callback */
-    if(H5HF_op(bt2_udata->fheap, bt2_udata->dxpl_id, record->id,
-            H5G_dense_get_name_by_idx_fh_cb, &fh_udata) < 0)
+    if(H5HF_op(bt2_udata->fheap, record->id, H5G_dense_get_name_by_idx_fh_cb, &fh_udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPERATE, FAIL, "link found callback failed")
 
     /* Set the name's full length to return */
@@ -1189,9 +1168,8 @@ done:
  *-------------------------------------------------------------------------
  */
 ssize_t
-H5G__dense_get_name_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
-    H5_index_t idx_type, H5_iter_order_t order, hsize_t n, char *name,
-    size_t size)
+H5G__dense_get_name_by_idx(H5F_t *f, H5O_linfo_t *linfo, H5_index_t idx_type,
+    H5_iter_order_t order, hsize_t n, char *name, size_t size)
 {
     H5HF_t *fheap = NULL;       /* Fractal heap handle */
     H5G_link_table_t ltable = {0, NULL};      /* Table of links */
@@ -1240,22 +1218,21 @@ H5G__dense_get_name_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
         H5G_bt2_ud_gnbi_t udata;       /* User data for v2 B-tree callback */
 
         /* Open the fractal heap */
-        if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+        if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
         /* Open the index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(f, dxpl_id, bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(f, bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for index")
 
         /* Set up the user data for the v2 B-tree 'record remove' callback */
         udata.f = f;
-        udata.dxpl_id = dxpl_id;
         udata.fheap = fheap;
         udata.name = name;
         udata.name_size = size;
 
         /* Retrieve the name according to the v2 B-tree's index order */
-        if(H5B2_index(bt2, dxpl_id, order, n, H5G_dense_get_name_by_idx_bt2_cb, &udata) < 0)
+        if(H5B2_index(bt2, order, n, H5G_dense_get_name_by_idx_bt2_cb, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTLIST, FAIL, "can't locate object in v2 B-tree")
 
         /* Set return value */
@@ -1263,7 +1240,7 @@ H5G__dense_get_name_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
     } /* end if */
     else {      /* Otherwise, we need to build a table of the links and sort it */
         /* Build the table of links for this group */
-        if(H5G__dense_build_table(f, dxpl_id, linfo, idx_type, order, &ltable) < 0)
+        if(H5G__dense_build_table(f, linfo, idx_type, order, &ltable) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "error building table of links")
 
         /* Check for going out of bounds */
@@ -1283,9 +1260,9 @@ H5G__dense_get_name_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2 && H5B2_close(bt2, dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for index")
     if(ltable.lnks && H5G__link_release_table(&ltable) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
@@ -1318,7 +1295,7 @@ H5G_dense_remove_fh_cb(const void *obj, size_t obj_len, void *_udata)
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Decode link information */
-    if(NULL == (lnk = (H5O_link_t *)H5O_msg_decode(udata->f, udata->dxpl_id, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
+    if(NULL == (lnk = (H5O_link_t *)H5O_msg_decode(udata->f, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTDECODE, FAIL, "can't decode link")
 
     /* Check for removing the link from the creation order index */
@@ -1326,7 +1303,7 @@ H5G_dense_remove_fh_cb(const void *obj, size_t obj_len, void *_udata)
         H5G_bt2_ud_common_t bt2_udata;         /* Info for B-tree callbacks */
 
         /* Open the creation order index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(udata->f, udata->dxpl_id, udata->corder_bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(udata->f, udata->corder_bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for creation order index")
 
         /* Set up the user data for the v2 B-tree 'record remove' callback */
@@ -1334,23 +1311,23 @@ H5G_dense_remove_fh_cb(const void *obj, size_t obj_len, void *_udata)
         bt2_udata.corder = lnk->corder;
 
         /* Remove the record from the name index v2 B-tree */
-        if(H5B2_remove(bt2, udata->dxpl_id, &bt2_udata, NULL, NULL) < 0)
+        if(H5B2_remove(bt2, &bt2_udata, NULL, NULL) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from creation order index v2 B-tree")
     } /* end if */
 
     /* Replace open objects' names, if requested */
     if(udata->replace_names)
-        if(H5G__link_name_replace(udata->f, udata->dxpl_id, udata->grp_full_path_r, lnk) < 0)
+        if(H5G__link_name_replace(udata->f, udata->grp_full_path_r, lnk) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTRENAME, FAIL, "unable to rename open objects")
 
     /* Perform the deletion action on the link, if requested */
     /* (call message "delete" callback directly: *ick* - QAK) */
-    if(H5O_link_delete(udata->f, udata->dxpl_id, NULL, lnk) < 0)
+    if(H5O_link_delete(udata->f, NULL, lnk) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete link")
 
 done:
     /* Release resources */
-    if(bt2 && H5B2_close(bt2, udata->dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for creation order index")
     if(lnk)
         H5O_msg_free(H5O_LINK_ID, lnk);
@@ -1384,19 +1361,17 @@ H5G_dense_remove_bt2_cb(const void *_record, void *_bt2_udata)
 
     /* Set up the user data for fractal heap 'op' callback */
     fh_udata.f = bt2_udata->common.f;
-    fh_udata.dxpl_id = bt2_udata->common.dxpl_id;
     fh_udata.corder_bt2_addr = bt2_udata->corder_bt2_addr;
     fh_udata.grp_full_path_r = bt2_udata->grp_full_path_r;
     fh_udata.replace_names = bt2_udata->replace_names;
 
     /* Call fractal heap 'op' routine, to perform user callback */
-    if(H5HF_op(bt2_udata->common.fheap, bt2_udata->common.dxpl_id, record->id,
-            H5G_dense_remove_fh_cb, &fh_udata) < 0)
+    if(H5HF_op(bt2_udata->common.fheap, record->id, H5G_dense_remove_fh_cb, &fh_udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPERATE, FAIL, "link removal callback failed")
 
     /* Remove record from fractal heap, if requested */
     if(bt2_udata->rem_from_fheap)
-        if(H5HF_remove(bt2_udata->common.fheap, bt2_udata->common.dxpl_id, record->id) < 0)
+        if(H5HF_remove(bt2_udata->common.fheap, record->id) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from fractal heap")
 
 done:
@@ -1418,8 +1393,8 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_remove(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    H5RS_str_t *grp_full_path_r, const char *name)
+H5G__dense_remove(H5F_t *f, const H5O_linfo_t *linfo, H5RS_str_t *grp_full_path_r,
+    const char *name)
 {
     H5HF_t *fheap = NULL;               /* Fractal heap handle */
     H5G_bt2_ud_rm_t udata;              /* User data for v2 B-tree record removal */
@@ -1436,16 +1411,15 @@ H5G__dense_remove(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
     HDassert(name && *name);
 
     /* Open the fractal heap */
-    if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+    if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
     /* Open the name index v2 B-tree */
-    if(NULL == (bt2 = H5B2_open(f, dxpl_id, linfo->name_bt2_addr, NULL)))
+    if(NULL == (bt2 = H5B2_open(f, linfo->name_bt2_addr, NULL)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index")
 
     /* Set up the user data for the v2 B-tree 'record remove' callback */
     udata.common.f = f;
-    udata.common.dxpl_id = dxpl_id;
     udata.common.fheap = fheap;
     udata.common.name = name;
     udata.common.name_hash = H5_checksum_lookup3(name, HDstrlen(name), 0);
@@ -1457,14 +1431,14 @@ H5G__dense_remove(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
     udata.replace_names = TRUE;
 
     /* Remove the record from the name index v2 B-tree */
-    if(H5B2_remove(bt2, dxpl_id, &udata, H5G_dense_remove_bt2_cb, &udata) < 0)
+    if(H5B2_remove(bt2, &udata, H5G_dense_remove_bt2_cb, &udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from name index v2 B-tree")
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2 && H5B2_close(bt2, dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for name index")
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -1493,7 +1467,7 @@ H5G_dense_remove_by_idx_fh_cb(const void *obj, size_t obj_len, void *_udata)
     FUNC_ENTER_NOAPI_NOINIT
 
     /* Decode link information */
-    if(NULL == (udata->lnk = (H5O_link_t *)H5O_msg_decode(udata->f, udata->dxpl_id, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
+    if(NULL == (udata->lnk = (H5O_link_t *)H5O_msg_decode(udata->f, NULL, H5O_LINK_ID, obj_len, (const unsigned char *)obj)))
         HGOTO_ERROR(H5E_SYM, H5E_CANTDECODE, H5_ITER_ERROR, "can't decode link")
 
     /* Can't operate on link here because the fractal heap block is locked */
@@ -1545,12 +1519,10 @@ H5G_dense_remove_by_idx_bt2_cb(const void *_record, void *_bt2_udata)
 
     /* Set up the user data for fractal heap 'op' callback */
     fh_udata.f = bt2_udata->f;
-    fh_udata.dxpl_id = bt2_udata->dxpl_id;
     fh_udata.lnk = NULL;
 
     /* Call fractal heap 'op' routine, to perform user callback */
-    if(H5HF_op(bt2_udata->fheap, bt2_udata->dxpl_id, heap_id,
-            H5G_dense_remove_by_idx_fh_cb, &fh_udata) < 0)
+    if(H5HF_op(bt2_udata->fheap, heap_id, H5G_dense_remove_by_idx_fh_cb, &fh_udata) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTOPERATE, FAIL, "link removal callback failed")
     HDassert(fh_udata.lnk);
 
@@ -1568,7 +1540,6 @@ H5G_dense_remove_by_idx_bt2_cb(const void *_record, void *_bt2_udata)
 
             /* Set up the user data for the v2 B-tree 'record remove' callback */
             other_bt2_udata.f = bt2_udata->f;
-            other_bt2_udata.dxpl_id = bt2_udata->dxpl_id;
             other_bt2_udata.fheap = bt2_udata->fheap;
             other_bt2_udata.name = fh_udata.lnk->name;
             other_bt2_udata.name_hash = H5_checksum_lookup3(fh_udata.lnk->name, HDstrlen(fh_udata.lnk->name), 0);
@@ -1577,35 +1548,35 @@ H5G_dense_remove_by_idx_bt2_cb(const void *_record, void *_bt2_udata)
         } /* end else */
 
         /* Open the index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(bt2_udata->f, bt2_udata->dxpl_id, bt2_udata->other_bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(bt2_udata->f, bt2_udata->other_bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for 'other' index")
 
         /* Set the common information for the v2 B-tree remove operation */
 
         /* Remove the record from the name index v2 B-tree */
-        if(H5B2_remove(bt2, bt2_udata->dxpl_id, &other_bt2_udata, NULL, NULL) < 0)
+        if(H5B2_remove(bt2, &other_bt2_udata, NULL, NULL) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, H5_ITER_ERROR, "unable to remove link from 'other' index v2 B-tree")
     } /* end if */
 
     /* Replace open objects' names */
-    if(H5G__link_name_replace(bt2_udata->f, bt2_udata->dxpl_id, bt2_udata->grp_full_path_r, fh_udata.lnk) < 0)
+    if(H5G__link_name_replace(bt2_udata->f, bt2_udata->grp_full_path_r, fh_udata.lnk) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTRENAME, FAIL, "unable to rename open objects")
 
     /* Perform the deletion action on the link */
     /* (call link message "delete" callback directly: *ick* - QAK) */
-    if(H5O_link_delete(bt2_udata->f, bt2_udata->dxpl_id, NULL, fh_udata.lnk) < 0)
+    if(H5O_link_delete(bt2_udata->f, NULL, fh_udata.lnk) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete link")
 
     /* Release the space allocated for the link */
     H5O_msg_free(H5O_LINK_ID, fh_udata.lnk);
 
     /* Remove record from fractal heap */
-    if(H5HF_remove(bt2_udata->fheap, bt2_udata->dxpl_id, heap_id) < 0)
+    if(H5HF_remove(bt2_udata->fheap, heap_id) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from fractal heap")
 
 done:
     /* Release resources */
-    if(bt2 && H5B2_close(bt2, bt2_udata->dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for 'other' index")
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -1627,9 +1598,8 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_remove_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
-    H5RS_str_t *grp_full_path_r, H5_index_t idx_type, H5_iter_order_t order,
-    hsize_t n)
+H5G__dense_remove_by_idx(H5F_t *f, const H5O_linfo_t *linfo, H5RS_str_t *grp_full_path_r,
+    H5_index_t idx_type, H5_iter_order_t order, hsize_t n)
 {
     H5HF_t *fheap = NULL;                     /* Fractal heap handle */
     H5G_link_table_t ltable = {0, NULL};      /* Table of links */
@@ -1678,28 +1648,27 @@ H5G__dense_remove_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
         H5G_bt2_ud_rmbi_t udata;            /* User data for v2 B-tree record removal */
 
         /* Open the fractal heap */
-        if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+        if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
         /* Open the index v2 B-tree */
-        if(NULL == (bt2 = H5B2_open(f, dxpl_id, bt2_addr, NULL)))
+        if(NULL == (bt2 = H5B2_open(f, bt2_addr, NULL)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for index")
 
         /* Set up the user data for the v2 B-tree 'remove by index' callback */
         udata.f = f;
-        udata.dxpl_id = dxpl_id;
         udata.fheap = fheap;
         udata.idx_type = idx_type;
         udata.other_bt2_addr = idx_type == H5_INDEX_NAME ? linfo->corder_bt2_addr : linfo->name_bt2_addr;
         udata.grp_full_path_r = grp_full_path_r;
 
         /* Remove the record from the name index v2 B-tree */
-        if(H5B2_remove_by_idx(bt2, dxpl_id, order, n, H5G_dense_remove_by_idx_bt2_cb, &udata) < 0)
+        if(H5B2_remove_by_idx(bt2, order, n, H5G_dense_remove_by_idx_bt2_cb, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from indexed v2 B-tree")
     } /* end if */
     else {      /* Otherwise, we need to build a table of the links and sort it */
         /* Build the table of links for this group */
-        if(H5G__dense_build_table(f, dxpl_id, linfo, idx_type, order, &ltable) < 0)
+        if(H5G__dense_build_table(f, linfo, idx_type, order, &ltable) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "error building table of links")
 
         /* Check for going out of bounds */
@@ -1707,15 +1676,15 @@ H5G__dense_remove_by_idx(H5F_t *f, hid_t dxpl_id, const H5O_linfo_t *linfo,
             HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "index out of bound")
 
         /* Remove the appropriate link from the dense storage */
-        if(H5G__dense_remove(f, dxpl_id, linfo, grp_full_path_r, ltable.lnks[n].name) < 0)
+        if(H5G__dense_remove(f, linfo, grp_full_path_r, ltable.lnks[n].name) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTREMOVE, FAIL, "unable to remove link from dense storage")
     } /* end else */
 
 done:
     /* Release resources */
-    if(fheap && H5HF_close(fheap, dxpl_id) < 0)
+    if(fheap && H5HF_close(fheap) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
-    if(bt2 && H5B2_close(bt2, dxpl_id) < 0)
+    if(bt2 && H5B2_close(bt2) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close v2 B-tree for index")
     if(ltable.lnks && H5G__link_release_table(&ltable) < 0)
         HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
@@ -1738,7 +1707,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5G__dense_delete(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo, hbool_t adj_link)
+H5G__dense_delete(H5F_t *f, H5O_linfo_t *linfo, hbool_t adj_link)
 {
     herr_t ret_value = SUCCEED;         /* Return value */
 
@@ -1759,12 +1728,11 @@ H5G__dense_delete(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo, hbool_t adj_link)
         H5G_bt2_ud_rm_t udata;          /* User data for v2 B-tree record removal */
 
         /* Open the fractal heap */
-        if(NULL == (fheap = H5HF_open(f, dxpl_id, linfo->fheap_addr)))
+        if(NULL == (fheap = H5HF_open(f, linfo->fheap_addr)))
             HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
 
         /* Set up the user data for the v2 B-tree 'record remove' callback */
         udata.common.f = f;
-        udata.common.dxpl_id = dxpl_id;
         udata.common.fheap = fheap;
         udata.common.name = NULL;
         udata.common.name_hash = 0;
@@ -1776,16 +1744,16 @@ H5G__dense_delete(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo, hbool_t adj_link)
         udata.replace_names = FALSE;
 
         /* Delete the name index, adjusting the ref. count on links removed */
-        if(H5B2_delete(f, dxpl_id, linfo->name_bt2_addr, NULL, H5G_dense_remove_bt2_cb, &udata) < 0)
+        if(H5B2_delete(f, linfo->name_bt2_addr, NULL, H5G_dense_remove_bt2_cb, &udata) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete v2 B-tree for name index")
 
         /* Close the fractal heap */
-        if(H5HF_close(fheap, dxpl_id) < 0)
+        if(H5HF_close(fheap) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
     } /* end if */
     else {
         /* Delete the name index, without adjusting the ref. count on the links  */
-        if(H5B2_delete(f, dxpl_id, linfo->name_bt2_addr, NULL, NULL, NULL) < 0)
+        if(H5B2_delete(f, linfo->name_bt2_addr, NULL, NULL, NULL) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete v2 B-tree for name index")
     } /* end else */
     linfo->name_bt2_addr = HADDR_UNDEF;
@@ -1794,7 +1762,7 @@ H5G__dense_delete(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo, hbool_t adj_link)
     if(linfo->index_corder) {
         /* Delete the creation order index, without adjusting the ref. count on the links  */
         HDassert(H5F_addr_defined(linfo->corder_bt2_addr));
-        if(H5B2_delete(f, dxpl_id, linfo->corder_bt2_addr, NULL, NULL, NULL) < 0)
+        if(H5B2_delete(f, linfo->corder_bt2_addr, NULL, NULL, NULL) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete v2 B-tree for creation order index")
         linfo->corder_bt2_addr = HADDR_UNDEF;
     } /* end if */
@@ -1802,7 +1770,7 @@ H5G__dense_delete(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo, hbool_t adj_link)
         HDassert(!H5F_addr_defined(linfo->corder_bt2_addr));
 
     /* Delete the fractal heap */
-    if(H5HF_delete(f, dxpl_id, linfo->fheap_addr) < 0)
+    if(H5HF_delete(f, linfo->fheap_addr) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete fractal heap")
     linfo->fheap_addr = HADDR_UNDEF;
 
@@ -1833,8 +1801,7 @@ done:
  *-------------------------------------------------------------------------
  */
 H5G_obj_t
-H5G__dense_get_type_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
-    hsize_t idx)
+H5G__dense_get_type_by_idx(H5F_t *f, H5O_linfo_t *linfo, hsize_t idx)
 {
     H5G_link_table_t ltable = {0, NULL};        /* Table of links */
     H5G_obj_t ret_value = H5G_UNKNOWN;          /* Return value */
@@ -1848,7 +1815,7 @@ H5G__dense_get_type_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
     HDassert(linfo);
 
     /* Build the table of links for this group */
-    if(H5G__dense_build_table(f, dxpl_id, linfo, H5_INDEX_NAME, H5_ITER_INC, &ltable) < 0)
+    if(H5G__dense_build_table(f, linfo, H5_INDEX_NAME, H5_ITER_INC, &ltable) < 0)
         HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5G_UNKNOWN, "error building table of links")
 
     /* Check for going out of bounds */
@@ -1869,7 +1836,7 @@ H5G__dense_get_type_by_idx(H5F_t *f, hid_t dxpl_id, H5O_linfo_t *linfo,
         tmp_oloc.addr = ltable.lnks[idx].u.hard.addr;
 
         /* Get the type of the object */
-        if(H5O_obj_type(&tmp_oloc, &obj_type, dxpl_id) < 0)
+        if(H5O_obj_type(&tmp_oloc, &obj_type) < 0)
             HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5G_UNKNOWN, "can't get object type")
 
         /* Map to group object type */