Add API context interface and use it throughout the library.

1 files changed, 187 insertions, 306 deletions

diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
index be3b678..5e6047a 100644
--- a/src/H5Dchunk.c
+++ b/src/H5Dchunk.c
@@ -52,6 +52,7 @@
 #ifdef H5_HAVE_PARALLEL
 #include "H5ACprivate.h"	/* Metadata cache			*/
 #endif /* H5_HAVE_PARALLEL */
+#include "H5CXprivate.h"        /* API Contexts                         */
 #include "H5Dpkg.h"		/* Dataset functions			*/
 #include "H5Eprivate.h"		/* Error handling		  	*/
 #include "H5Fprivate.h"		/* File functions			*/
@@ -213,7 +214,6 @@ typedef struct H5D_chunk_it_ud5_t {
 typedef struct H5D_chunk_readvv_ud_t {
     unsigned char *rbuf;        /* Read buffer to initialize */
     const H5D_t *dset;          /* Dataset to operate on */
-    hid_t dxpl_id;              /* DXPL for operation */
 } H5D_chunk_readvv_ud_t;
 
 /* Callback info for file selection iteration */
@@ -238,8 +238,7 @@ typedef struct H5D_chunk_coll_info_t {
 
 /* Chunked layout operation callbacks */
 static herr_t H5D__chunk_construct(H5F_t *f, H5D_t *dset);
-static herr_t H5D__chunk_init(H5F_t *f, hid_t dxpl_id, const H5D_t *dset,
-    hid_t dapl_id);
+static herr_t H5D__chunk_init(H5F_t *f, const H5D_t *dset, hid_t dapl_id);
 static herr_t H5D__chunk_io_init(const H5D_io_info_t *io_info,
     const H5D_type_info_t *type_info, hsize_t nelmts, const H5S_t *file_space,
     const H5S_t *mem_space, H5D_chunk_map_t *fm);
@@ -249,9 +248,9 @@ static herr_t H5D__chunk_read(H5D_io_info_t *io_info, const H5D_type_info_t *typ
 static herr_t H5D__chunk_write(H5D_io_info_t *io_info, const H5D_type_info_t *type_info,
     hsize_t nelmts, const H5S_t *file_space, const H5S_t *mem_space,
     H5D_chunk_map_t *fm);
-static herr_t H5D__chunk_flush(H5D_t *dset, hid_t dxpl_id);
+static herr_t H5D__chunk_flush(H5D_t *dset);
 static herr_t H5D__chunk_io_term(const H5D_chunk_map_t *fm);
-static herr_t H5D__chunk_dest(H5D_t *dset, hid_t dxpl_id);
+static herr_t H5D__chunk_dest(H5D_t *dset);
 
 /* "Nonexistent" layout operation callback */
 static ssize_t
@@ -285,22 +284,20 @@ static herr_t H5D__chunk_file_cb(void *elem, const H5T_t *type, unsigned ndims,
 static herr_t H5D__chunk_mem_cb(void *elem, const H5T_t *type, unsigned ndims,
     const hsize_t *coords, void *fm);
 static unsigned H5D__chunk_hash_val(const H5D_shared_t *shared, const hsize_t *scaled);
-static herr_t H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id,
-    const H5D_dxpl_cache_t *dxpl_cache, H5D_rdcc_ent_t *ent, hbool_t reset);
-static herr_t H5D__chunk_cache_evict(const H5D_t *dset, hid_t dxpl_id,
-    const H5D_dxpl_cache_t *dxpl_cache, H5D_rdcc_ent_t *ent, hbool_t flush);
+static herr_t H5D__chunk_flush_entry(const H5D_t *dset, H5D_rdcc_ent_t *ent,
+    hbool_t reset);
+static herr_t H5D__chunk_cache_evict(const H5D_t *dset, H5D_rdcc_ent_t *ent,
+    hbool_t flush);
 static hbool_t H5D__chunk_is_partial_edge_chunk(unsigned dset_ndims,
     const uint32_t *chunk_dims, const hsize_t *chunk_scaled, const hsize_t *dset_dims);
 static void *H5D__chunk_lock(const H5D_io_info_t *io_info,
     H5D_chunk_ud_t *udata, hbool_t relax, hbool_t prev_unfilt_chunk);
 static herr_t H5D__chunk_unlock(const H5D_io_info_t *io_info,
-    const H5D_chunk_ud_t *udata, hbool_t dirty, void *chunk,
-    uint32_t naccessed);
-static herr_t H5D__chunk_cache_prune(const H5D_t *dset, hid_t dxpl_id,
-    const H5D_dxpl_cache_t *dxpl_cache, size_t size);
+    const H5D_chunk_ud_t *udata, hbool_t dirty, void *chunk, uint32_t naccessed);
+static herr_t H5D__chunk_cache_prune(const H5D_t *dset, size_t size);
 static herr_t H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk);
 #ifdef H5_HAVE_PARALLEL
-static herr_t H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
+static herr_t H5D__chunk_collective_fill(const H5D_t *dset, 
     H5D_chunk_coll_info_t *chunk_info, size_t chunk_size, const void *fill_buf);
 #endif /* H5_HAVE_PARALLEL */
 
@@ -383,8 +380,8 @@ H5FL_EXTERN(H5S_sel_iter_t);
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters, 
-    hsize_t *offset, uint32_t data_size, const void *buf)
+H5D__chunk_direct_write(const H5D_t *dset, uint32_t filters, hsize_t *offset,
+    uint32_t data_size, const void *buf)
 {
     const H5O_layout_t *layout = &(dset->shared->layout);       /* Dataset layout */
     H5D_chunk_ud_t udata;               /* User data for querying chunk info */
@@ -392,35 +389,25 @@ H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters,
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
     hsize_t scaled[H5S_MAX_RANK];       /* Scaled coordinates for this chunk */
     hbool_t need_insert = FALSE;        /* Whether the chunk needs to be inserted into the index */
-    H5D_io_info_t io_info;              /* to hold the dset and two dxpls (meta and raw data) */
-    hbool_t md_dxpl_generated = FALSE;  /* bool to indicate whether we should free the md_dxpl_id at exit */
+    H5D_io_info_t io_info;              /* to hold the dset info */
     herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_STATIC_TAG(dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_PACKAGE_TAG(dset->oloc.addr)
 
     io_info.dset = dset;
-    io_info.raw_dxpl_id = dxpl_id;
-    io_info.md_dxpl_id = dxpl_id;
-
-    /* set the dxpl IO type for sanity checking at the FD layer */
-#ifdef H5_DEBUG_BUILD
-    if(H5D_set_io_info_dxpls(&io_info, dxpl_id) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't set metadata and raw data dxpls")
-    md_dxpl_generated = TRUE;
-#endif /* H5_DEBUG_BUILD */
 
     /* Allocate dataspace and initialize it if it hasn't been. */
-    if(!(*layout->ops->is_space_alloc)(&layout->storage)) {
+    if(!(*layout->ops->is_space_alloc)(&layout->storage))
         /* Allocate storage */
         if(H5D__alloc_storage(&io_info, H5D_ALLOC_WRITE, FALSE, NULL) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize storage")
-    }
+
     /* Calculate the index of this chunk */
     H5VM_chunk_scaled(dset->shared->ndims, offset, layout->u.chunk.dim, scaled);
     scaled[dset->shared->ndims] = 0;
 
     /* Find out the file address of the chunk (if any) */
-    if(H5D__chunk_lookup(dset, io_info.md_dxpl_id, scaled, &udata) < 0)
+    if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
     /* Sanity check */
@@ -438,7 +425,6 @@ H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters,
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = io_info.md_dxpl_id;
     idx_info.pline = &(dset->shared->dcpl_cache.pline);
     idx_info.layout = &(dset->shared->layout.u.chunk);
     idx_info.storage = &(dset->shared->layout.storage.u.chunk);
@@ -446,17 +432,15 @@ H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters,
     /* Set up the size of chunk for user data */
     udata.chunk_block.length = data_size;
 
-    if (0 == idx_info.pline->nused && H5F_addr_defined(old_chunk.offset)) {
+    if(0 == idx_info.pline->nused && H5F_addr_defined(old_chunk.offset))
         /* If there are no filters and we are overwriting the chunk we can just set values */
         need_insert = FALSE;
-    }
-    else {
+    else
         /* Otherwise, create the chunk it if it doesn't exist, or reallocate the chunk
          * if its size has changed.
          */
-        if (H5D__chunk_file_alloc(&idx_info, &old_chunk, &udata.chunk_block, &need_insert, scaled) < 0)
+        if(H5D__chunk_file_alloc(&idx_info, &old_chunk, &udata.chunk_block, &need_insert, scaled) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "unable to allocate chunk")
-    }
 
     /* Make sure the address of the chunk is returned. */
     if(!H5F_addr_defined(udata.chunk_block.offset))
@@ -465,20 +449,14 @@ H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters,
     /* Evict the (old) entry from the cache if present, but do not flush
      * it to disk */
     if(UINT_MAX != udata.idx_hint) {
-        H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-        H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
         const H5D_rdcc_t *rdcc = &(dset->shared->cache.chunk);	/*raw data chunk cache */
 
-        /* Fill the DXPL cache values for later use */
-        if(H5D__get_dxpl_cache(io_info.raw_dxpl_id, &dxpl_cache) < 0)
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
-        if(H5D__chunk_cache_evict(dset, io_info.md_dxpl_id, dxpl_cache, rdcc->slot[udata.idx_hint], FALSE) < 0)
+        if(H5D__chunk_cache_evict(dset, rdcc->slot[udata.idx_hint], FALSE) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTREMOVE, FAIL, "unable to evict chunk")
     } /* end if */
 
     /* Write the data to the file */
-    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, data_size, io_info.raw_dxpl_id, buf) < 0)
+    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, data_size, buf) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to write raw data to file")
 
     /* Insert the chunk record into the index */
@@ -491,11 +469,7 @@ H5D__chunk_direct_write(const H5D_t *dset, hid_t dxpl_id, uint32_t filters,
     } /* end if */
 
 done:
-#ifdef H5_DEBUG_BUILD
-    if(md_dxpl_generated && H5I_dec_ref(io_info.md_dxpl_id) < 0)
-        HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "can't close metadata dxpl")
-#endif /* H5_DEBUG_BUILD */
-    FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL)
+    FUNC_LEAVE_NOAPI_TAG(ret_value)
 } /* end H5D__chunk_direct_write() */
 
 
@@ -512,20 +486,16 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_direct_read(const H5D_t *dset, hid_t dxpl_id, hsize_t *offset,
-    uint32_t* filters, void *buf)
+H5D__chunk_direct_read(const H5D_t *dset, hsize_t *offset, uint32_t* filters,
+    void *buf)
 {
     const H5O_layout_t *layout = &(dset->shared->layout);    /* Dataset layout */
     const H5D_rdcc_t   *rdcc = &(dset->shared->cache.chunk); /* raw data chunk cache */
     H5D_chunk_ud_t     udata;          /* User data for querying chunk info */
     hsize_t scaled[H5S_MAX_RANK];       /* Scaled coordinates for this chunk */
-    H5D_io_info_t io_info;              /* to hold the dset and two dxpls (meta and raw data) */
-    H5D_dxpl_cache_t   _dxpl_cache;     /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t   *dxpl_cache = &_dxpl_cache; /* Data transfer property cache */
-    hbool_t md_dxpl_generated = FALSE;  /* bool to indicate whether we should free the md_dxpl_id at exit */
     herr_t             ret_value = SUCCEED;        /* Return value */
 
-    FUNC_ENTER_STATIC_TAG(dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_PACKAGE_VOL_TAG(dset->oloc.addr)
 
     /* Check args */
     HDassert(dset && H5D_CHUNKED == layout->type);
@@ -535,17 +505,6 @@ H5D__chunk_direct_read(const H5D_t *dset, hid_t dxpl_id, hsize_t *offset,
 
     *filters = 0;
 
-    io_info.dset = dset;
-    io_info.raw_dxpl_id = dxpl_id;
-    io_info.md_dxpl_id = dxpl_id;
-
-    /* set the dxpl IO type for sanity checking at the FD layer */
-#ifdef H5_DEBUG_BUILD
-    if(H5D_set_io_info_dxpls(&io_info, dxpl_id) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't set metadata and raw data dxpls")
-    md_dxpl_generated = TRUE;
-#endif /* H5_DEBUG_BUILD */
-
     /* Allocate dataspace and initialize it if it hasn't been. */
     if(!(*layout->ops->is_space_alloc)(&layout->storage))
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "storage is not initialized")
@@ -561,7 +520,7 @@ H5D__chunk_direct_read(const H5D_t *dset, hid_t dxpl_id, hsize_t *offset,
     udata.idx_hint = UINT_MAX;
 
     /* Find out the file address of the chunk */
-    if(H5D__chunk_lookup(dset, io_info.md_dxpl_id, scaled, &udata) < 0)
+    if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
     /* Sanity check */
@@ -579,12 +538,8 @@ H5D__chunk_direct_read(const H5D_t *dset, hid_t dxpl_id, hsize_t *offset,
 
         flush = (ent->dirty == TRUE) ? TRUE : FALSE;
 
-        /* Fill the DXPL cache values for later use */
-        if(H5D__get_dxpl_cache(io_info.raw_dxpl_id, &dxpl_cache) < 0)
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
         /* Flush the chunk to disk and clear the cache entry */
-        if(H5D__chunk_cache_evict(dset, io_info.md_dxpl_id, dxpl_cache, rdcc->slot[udata.idx_hint], flush) < 0)
+        if(H5D__chunk_cache_evict(dset, rdcc->slot[udata.idx_hint], flush) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTREMOVE, FAIL, "unable to evict chunk")
 
         /* Reset fields about the chunk we are looking for */
@@ -594,27 +549,23 @@ H5D__chunk_direct_read(const H5D_t *dset, hid_t dxpl_id, hsize_t *offset,
         udata.idx_hint = UINT_MAX;
 
         /* Get the new file address / chunk size after flushing */
-        if(H5D__chunk_lookup(dset, io_info.md_dxpl_id, scaled, &udata) < 0)
+        if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
-    }
+    } /* end if */
 
     /* Make sure the address of the chunk is returned. */
     if(!H5F_addr_defined(udata.chunk_block.offset))
         HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "chunk address isn't defined")
 
     /* Read the chunk data into the supplied buffer */
-    if(H5F_block_read(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, udata.chunk_block.length, io_info.raw_dxpl_id, buf) < 0)
+    if(H5F_block_read(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, udata.chunk_block.length, buf) < 0)
         HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "unable to read raw data chunk")
     
     /* Return the filter mask */
     *filters = udata.filter_mask;
 
 done:
-#ifdef H5_DEBUG_BUILD
-    if(md_dxpl_generated && H5I_dec_ref(io_info.md_dxpl_id) < 0)
-        HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "can't close metadata dxpl")
-#endif /* H5_DEBUG_BUILD */
-    FUNC_LEAVE_NOAPI(ret_value)
+    FUNC_LEAVE_NOAPI_VOL_TAG(ret_value)
 } /* end H5D__chunk_direct_read() */
 
 
@@ -631,19 +582,15 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, hsize_t *storage_size)
+H5D__get_chunk_storage_size(H5D_t *dset, const hsize_t *offset, hsize_t *storage_size)
 {
     const H5O_layout_t *layout = &(dset->shared->layout);    /* Dataset layout */
     const H5D_rdcc_t   *rdcc = &(dset->shared->cache.chunk); /* raw data chunk cache */
     hsize_t scaled[H5S_MAX_RANK];       /* Scaled coordinates for this chunk */
-    H5D_io_info_t io_info;              /* to hold the dset and two dxpls (meta and raw data) */
     H5D_chunk_ud_t     udata;           /* User data for querying chunk info */
-    H5D_dxpl_cache_t   _dxpl_cache;     /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t   *dxpl_cache = &_dxpl_cache; /* Data transfer property cache */
-    hbool_t md_dxpl_generated = FALSE;  /* bool to indicate whether we should free the md_dxpl_id at exit */
     herr_t             ret_value = SUCCEED;        /* Return value */
 
-    FUNC_ENTER_STATIC_TAG(dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_PACKAGE_VOL_TAG(dset->oloc.addr)
 
     /* Check args */
     HDassert(dset && H5D_CHUNKED == layout->type);
@@ -652,17 +599,6 @@ H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, h
 
     *storage_size = 0;
 
-    io_info.dset = dset;
-    io_info.raw_dxpl_id = dxpl_id;
-    io_info.md_dxpl_id = dxpl_id;
-
-    /* set the dxpl IO type for sanity checking at the FD layer */
-#ifdef H5_DEBUG_BUILD
-    if(H5D_set_io_info_dxpls(&io_info, dxpl_id) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't set metadata and raw data dxpls")
-    md_dxpl_generated = TRUE;
-#endif /* H5_DEBUG_BUILD */
-
     /* Allocate dataspace and initialize it if it hasn't been. */
     if(!(*layout->ops->is_space_alloc)(&layout->storage))
         HGOTO_DONE(SUCCEED)
@@ -677,7 +613,7 @@ H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, h
     udata.idx_hint = UINT_MAX;
 
     /* Find out the file address of the chunk */
-    if(H5D__chunk_lookup(dset, io_info.md_dxpl_id, scaled, &udata) < 0)
+    if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
     /* Sanity check */
@@ -700,12 +636,8 @@ H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, h
 
             /* If the cached chunk is dirty, it must be flushed to get accurate size */
             if( ent->dirty == TRUE ) {
-                /* Fill the DXPL cache values for later use */
-                if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-                    HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
                 /* Flush the chunk to disk and clear the cache entry */
-                if(H5D__chunk_cache_evict(dset, io_info.md_dxpl_id, dxpl_cache, rdcc->slot[udata.idx_hint], TRUE) < 0)
+                if(H5D__chunk_cache_evict(dset, rdcc->slot[udata.idx_hint], TRUE) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTREMOVE, FAIL, "unable to evict chunk")
 
                 /* Reset fields about the chunk we are looking for */
@@ -714,10 +646,10 @@ H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, h
                 udata.idx_hint = UINT_MAX;
 
                 /* Get the new file address / chunk size after flushing */
-                if(H5D__chunk_lookup(dset, io_info.md_dxpl_id, scaled, &udata) < 0)
+                if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
-            }
-        }
+            } /* end if */
+        } /* end if */
 
         /* Make sure the address of the chunk is returned. */
         if(!H5F_addr_defined(udata.chunk_block.offset))
@@ -731,11 +663,7 @@ H5D__get_chunk_storage_size(H5D_t *dset, hid_t dxpl_id, const hsize_t *offset, h
         *storage_size = dset->shared->layout.u.chunk.size;
 
 done:
-#ifdef H5_DEBUG_BUILD
-    if(md_dxpl_generated && H5I_dec_ref(io_info.md_dxpl_id) < 0)
-        HDONE_ERROR(H5E_DATASET, H5E_CANTDEC, FAIL, "can't close metadata dxpl")
-#endif /* H5_DEBUG_BUILD */
-    FUNC_LEAVE_NOAPI(ret_value)
+    FUNC_LEAVE_NOAPI_VOL_TAG(ret_value)
 } /* H5D__get_chunk_storage_size */
 
 
@@ -965,7 +893,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_init(H5F_t *f, hid_t dxpl_id, const H5D_t *dset, hid_t dapl_id)
+H5D__chunk_init(H5F_t *f, const H5D_t *dset, hid_t dapl_id)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
     H5D_rdcc_t	*rdcc = &(dset->shared->cache.chunk);   /* Convenience pointer to dataset's chunk cache */
@@ -1034,7 +962,6 @@ H5D__chunk_init(H5F_t *f, hid_t dxpl_id, const H5D_t *dset, hid_t dapl_id)
 
     /* Compose chunked index info struct */
     idx_info.f = f;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -1369,7 +1296,7 @@ done:
 
     if(iter_init && H5S_SELECT_ITER_RELEASE(&(fm->mem_iter)) < 0)
         HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release selection iterator")
-    if(file_type && (H5T_close(file_type) < 0))
+    if(file_type && (H5T_close_real(file_type) < 0))
         HDONE_ERROR(H5E_DATATYPE, H5E_CANTFREE, FAIL, "Can't free temporary datatype")
     if(file_space_normalized) {
         /* (Casting away const OK -QAK) */
@@ -2272,7 +2199,7 @@ H5D__chunk_read(H5D_io_info_t *io_info, const H5D_type_info_t *type_info,
         chunk_info = H5D_CHUNK_GET_NODE_INFO(fm, chunk_node);
 
         /* Get the info for the chunk in the file */
-        if(H5D__chunk_lookup(io_info->dset, io_info->md_dxpl_id, chunk_info->scaled, &udata) < 0)
+        if(H5D__chunk_lookup(io_info->dset, chunk_info->scaled, &udata) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
         /* Sanity check */
@@ -2405,7 +2332,7 @@ H5D__chunk_write(H5D_io_info_t *io_info, const H5D_type_info_t *type_info,
         chunk_info = H5D_CHUNK_GET_NODE_INFO(fm, chunk_node);
 
         /* Look up the chunk */
-        if(H5D__chunk_lookup(io_info->dset, io_info->md_dxpl_id, chunk_info->scaled, &udata) < 0)
+        if(H5D__chunk_lookup(io_info->dset, chunk_info->scaled, &udata) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
         /* Sanity check */
@@ -2448,7 +2375,6 @@ H5D__chunk_write(H5D_io_info_t *io_info, const H5D_type_info_t *type_info,
             if(!H5F_addr_defined(udata.chunk_block.offset)) {
                 /* Compose chunked index info struct */
                 idx_info.f = io_info->dset->oloc.file;
-                idx_info.dxpl_id = io_info->md_dxpl_id;
                 idx_info.pline = &(io_info->dset->shared->dcpl_cache.pline);
                 idx_info.layout = &(io_info->dset->shared->layout.u.chunk);
                 idx_info.storage = &(io_info->dset->shared->layout.storage.u.chunk);
@@ -2517,10 +2443,8 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_flush(H5D_t *dset, hid_t dxpl_id)
+H5D__chunk_flush(H5D_t *dset)
 {
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     H5D_rdcc_t *rdcc = &(dset->shared->cache.chunk);
     H5D_rdcc_ent_t	*ent, *next;
     unsigned		nerrors = 0;    /* Count of any errors encountered when flushing chunks */
@@ -2531,14 +2455,10 @@ H5D__chunk_flush(H5D_t *dset, hid_t dxpl_id)
     /* Sanity check */
     HDassert(dset);
 
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
     /* Loop over all entries in the chunk cache */
     for(ent = rdcc->head; ent; ent = next) {
 	next = ent->next;
-        if(H5D__chunk_flush_entry(dset, dxpl_id, dxpl_cache, ent, FALSE) < 0)
+        if(H5D__chunk_flush_entry(dset, ent, FALSE) < 0)
             nerrors++;
     } /* end for */
     if(nerrors)
@@ -2614,31 +2534,25 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_dest(H5D_t *dset, hid_t dxpl_id)
+H5D__chunk_dest(H5D_t *dset)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     H5D_rdcc_t	*rdcc = &(dset->shared->cache.chunk);   /* Dataset's chunk cache */
     H5D_rdcc_ent_t	*ent = NULL, *next = NULL;      /* Pointer to current & next cache entries */
     int		nerrors = 0;            /* Accumulated count of errors */
     H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk);
     herr_t      ret_value = SUCCEED;       /* Return value */
 
-    FUNC_ENTER_STATIC_TAG(dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_STATIC_TAG(dset->oloc.addr)
 
     /* Sanity checks */
     HDassert(dset);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
 
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        nerrors++;
-
     /* Flush all the cached chunks */
     for(ent = rdcc->head; ent; ent = next) {
         next = ent->next;
-        if(H5D__chunk_cache_evict(dset, dxpl_id, dxpl_cache, ent, TRUE) < 0)
+        if(H5D__chunk_cache_evict(dset, ent, TRUE) < 0)
             nerrors++;
     } /* end for */
     
@@ -2653,7 +2567,6 @@ H5D__chunk_dest(H5D_t *dset, hid_t dxpl_id)
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -2664,7 +2577,7 @@ H5D__chunk_dest(H5D_t *dset, hid_t dxpl_id)
 	HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to release chunk index info")
 
 done:
-    FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL)
+    FUNC_LEAVE_NOAPI_TAG(ret_value)
 } /* end H5D__chunk_dest() */
 
 
@@ -2830,7 +2743,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_create(const H5D_t *dset /*in,out*/, hid_t dxpl_id)
+H5D__chunk_create(const H5D_t *dset /*in,out*/)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
     H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk);
@@ -2855,7 +2768,6 @@ H5D__chunk_create(const H5D_t *dset /*in,out*/, hid_t dxpl_id)
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -2930,7 +2842,7 @@ H5D__chunk_hash_val(const H5D_shared_t *shared, const hsize_t *scaled)
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_lookup(const H5D_t *dset, hid_t dxpl_id, const hsize_t *scaled,
+H5D__chunk_lookup(const H5D_t *dset, const hsize_t *scaled,
     H5D_chunk_ud_t *udata)
 {
     H5D_rdcc_ent_t  *ent = NULL;        /* Cache entry */
@@ -3001,7 +2913,6 @@ H5D__chunk_lookup(const H5D_t *dset, hid_t dxpl_id, const hsize_t *scaled,
 
             /* Compose chunked index info struct */
             idx_info.f = dset->oloc.file;
-            idx_info.dxpl_id = dxpl_id;
             idx_info.pline = &dset->shared->dcpl_cache.pline;
             idx_info.layout = &dset->shared->layout.u.chunk;
             idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -3052,20 +2963,18 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t *dxpl_cache,
-    H5D_rdcc_ent_t *ent, hbool_t reset)
+H5D__chunk_flush_entry(const H5D_t *dset, H5D_rdcc_ent_t *ent, hbool_t reset)
 {
     void	*buf = NULL;	        /* Temporary buffer		*/
     hbool_t	point_of_no_return = FALSE;
     H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk);
     herr_t	ret_value = SUCCEED;	/* Return value			*/
 
-    FUNC_ENTER_STATIC_TAG(dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_STATIC_TAG(dset->oloc.addr)
 
     HDassert(dset);
     HDassert(dset->shared);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
-    HDassert(dxpl_cache);
     HDassert(ent);
     HDassert(!ent->locked);
 
@@ -3088,8 +2997,16 @@ H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t
         /* Should the chunk be filtered before writing it to disk? */
         if(dset->shared->dcpl_cache.pline.nused
                 && !(ent->edge_chunk_state & H5D_RDCC_DISABLE_FILTERS)) {
+            H5Z_EDC_t err_detect;       /* Error detection info */
+            H5Z_cb_t filter_cb;         /* I/O filter callback function */
             size_t alloc = udata.chunk_block.length;        /* Bytes allocated for BUF	*/
-            size_t nbytes;                      /* Chunk size (in bytes) */
+            size_t nbytes;              /* Chunk size (in bytes) */
+
+            /* Retrieve filter settings from API context */
+            if(H5CX_get_err_detect(&err_detect) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get error detection info")
+            if(H5CX_get_filter_cb(&filter_cb) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get I/O filter callback function")
 
             if(!reset) {
                 /*
@@ -3113,9 +3030,9 @@ H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t
                 ent->chunk = NULL;
             } /* end else */
             H5_CHECKED_ASSIGN(nbytes, size_t, udata.chunk_block.length, hsize_t);
-            if(H5Z_pipeline(&(dset->shared->dcpl_cache.pline), 0, &(udata.filter_mask), dxpl_cache->err_detect,
-                     dxpl_cache->filter_cb, &nbytes, &alloc, &buf) < 0)
-                HGOTO_ERROR(H5E_PLINE, H5E_CANTFILTER, FAIL, "output pipeline failed")
+            if(H5Z_pipeline(&(dset->shared->dcpl_cache.pline), 0, &(udata.filter_mask),
+                    err_detect, filter_cb, &nbytes, &alloc, &buf) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTFILTER, FAIL, "output pipeline failed")
 #if H5_SIZEOF_SIZE_T > 4
             /* Check for the chunk expanding too much to encode in a 32-bit value */
             if(nbytes > ((size_t)0xffffffff))
@@ -3153,7 +3070,6 @@ H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t
         if(must_alloc) {
             /* Compose chunked index info struct */
             idx_info.f = dset->oloc.file;
-            idx_info.dxpl_id = dxpl_id;
             idx_info.pline = &dset->shared->dcpl_cache.pline;
             idx_info.layout = &dset->shared->layout.u.chunk;
             idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -3172,7 +3088,7 @@ H5D__chunk_flush_entry(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t
         /* Write the data to the file */
         HDassert(H5F_addr_defined(udata.chunk_block.offset));
         H5_CHECK_OVERFLOW(udata.chunk_block.length, hsize_t, size_t);
-        if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, (size_t)udata.chunk_block.length, H5AC_rawdata_dxpl_id, buf) < 0)
+        if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, (size_t)udata.chunk_block.length, buf) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to write raw data to file")
 
         /* Insert the chunk record into the index */
@@ -3218,7 +3134,7 @@ done:
                     ((ent->edge_chunk_state & H5D_RDCC_DISABLE_FILTERS) ? NULL
                     : &(dset->shared->dcpl_cache.pline)));
 
-    FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL)
+    FUNC_LEAVE_NOAPI_TAG(ret_value)
 } /* end H5D__chunk_flush_entry() */
 
 
@@ -3236,23 +3152,23 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_cache_evict(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t *dxpl_cache,
-    H5D_rdcc_ent_t *ent, hbool_t flush)
+H5D__chunk_cache_evict(const H5D_t *dset, H5D_rdcc_ent_t *ent,
+    hbool_t flush)
 {
     H5D_rdcc_t *rdcc = &(dset->shared->cache.chunk);
     herr_t      ret_value = SUCCEED;       /* Return value */
 
     FUNC_ENTER_STATIC
 
+    /* Sanity checks */
     HDassert(dset);
-    HDassert(dxpl_cache);
     HDassert(ent);
     HDassert(!ent->locked);
     HDassert(ent->idx < rdcc->nslots);
 
     if(flush) {
         /* Flush */
-        if(H5D__chunk_flush_entry(dset, dxpl_id, dxpl_cache, ent, TRUE) < 0)
+        if(H5D__chunk_flush_entry(dset, ent, TRUE) < 0)
             HDONE_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush indexed storage buffer")
     } /* end if */
     else {
@@ -3317,8 +3233,7 @@ H5D__chunk_cache_evict(const H5D_t *dset, hid_t dxpl_id, const H5D_dxpl_cache_t
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_cache_prune(const H5D_t *dset, hid_t dxpl_id,
-    const H5D_dxpl_cache_t *dxpl_cache, size_t size)
+H5D__chunk_cache_prune(const H5D_t *dset, size_t size)
 {
     const H5D_rdcc_t	*rdcc = &(dset->shared->cache.chunk);
     size_t		total = rdcc->nbytes_max;
@@ -3390,7 +3305,7 @@ H5D__chunk_cache_prune(const H5D_t *dset, hid_t dxpl_id,
 		    if(n[j] == cur)
                         n[j] = cur->next;
 		} /* end for */
-		if(H5D__chunk_cache_evict(dset, dxpl_id, dxpl_cache, cur, TRUE) < 0)
+		if(H5D__chunk_cache_evict(dset, cur, TRUE) < 0)
                     nerrors++;
 	    } /* end if */
 	} /* end for */
@@ -3457,13 +3372,11 @@ H5D__chunk_lock(const H5D_io_info_t *io_info, H5D_chunk_ud_t *udata,
 
     FUNC_ENTER_STATIC
 
+    /* Sanity checks */
     HDassert(io_info);
-    HDassert(io_info->dxpl_cache);
     HDassert(io_info->store);
     HDassert(udata);
     HDassert(dset);
-    HDassert(TRUE == H5P_isa_class(io_info->md_dxpl_id, H5P_DATASET_XFER));
-    HDassert(TRUE == H5P_isa_class(io_info->raw_dxpl_id, H5P_DATASET_XFER));
     HDassert(!(udata->new_unfilt_chunk && prev_unfilt_chunk));
     HDassert(!rdcc->tmp_head);
 
@@ -3647,16 +3560,22 @@ H5D__chunk_lock(const H5D_io_info_t *io_info, H5D_chunk_ud_t *udata,
                  * size in memory, so allocate memory big enough. */
                 if(NULL == (chunk = H5D__chunk_mem_alloc(my_chunk_alloc, (udata->new_unfilt_chunk ? old_pline : pline))))
                     HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for raw data chunk")
-                if(H5F_block_read(dset->oloc.file, H5FD_MEM_DRAW, chunk_addr, my_chunk_alloc, io_info->raw_dxpl_id, chunk) < 0)
+                if(H5F_block_read(dset->oloc.file, H5FD_MEM_DRAW, chunk_addr, my_chunk_alloc, chunk) < 0)
                     HGOTO_ERROR(H5E_IO, H5E_READERROR, NULL, "unable to read raw data chunk")
 
                 if(old_pline && old_pline->nused) {
-                    if(H5Z_pipeline(old_pline, H5Z_FLAG_REVERSE,
-                            &(udata->filter_mask),
-                            io_info->dxpl_cache->err_detect,
-                            io_info->dxpl_cache->filter_cb,
-                            &my_chunk_alloc, &buf_alloc, &chunk) < 0)
-                        HGOTO_ERROR(H5E_PLINE, H5E_CANTFILTER, NULL, "data pipeline read failed")
+                    H5Z_EDC_t err_detect;       /* Error detection info */
+                    H5Z_cb_t filter_cb;         /* I/O filter callback function */
+
+                    /* Retrieve filter settings from API context */
+                    if(H5CX_get_err_detect(&err_detect) < 0)
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't get error detection info")
+                    if(H5CX_get_filter_cb(&filter_cb) < 0)
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't get I/O filter callback function")
+
+                    if(H5Z_pipeline(old_pline, H5Z_FLAG_REVERSE, &(udata->filter_mask),
+                            err_detect, filter_cb, &my_chunk_alloc, &buf_alloc, &chunk) < 0)
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTFILTER, NULL, "data pipeline read failed")
 
                     /* Reallocate chunk if necessary */
                     if(udata->new_unfilt_chunk) {
@@ -3701,14 +3620,14 @@ H5D__chunk_lock(const H5D_io_info_t *io_info, H5D_chunk_ud_t *udata,
                     /* (use the compact dataset storage buffer as the fill value buffer) */
                     if(H5D__fill_init(&fb_info, chunk, NULL, NULL, NULL, NULL,
                             &dset->shared->dcpl_cache.fill, dset->shared->type,
-                            dset->shared->type_id, (size_t)0, chunk_size, io_info->md_dxpl_id) < 0)
+                            dset->shared->type_id, (size_t)0, chunk_size) < 0)
                         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, "can't initialize fill buffer info")
                     fb_info_init = TRUE;
 
                     /* Check for VL datatype & non-default fill value */
                     if(fb_info.has_vlen_fill_type)
                         /* Fill the buffer with VL datatype fill values */
-                        if(H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf, io_info->md_dxpl_id) < 0)
+                        if(H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf) < 0)
                             HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, NULL, "can't refill fill value buffer")
                 } /* end if */
                 else
@@ -3729,10 +3648,10 @@ H5D__chunk_lock(const H5D_io_info_t *io_info, H5D_chunk_ud_t *udata,
             if(!ent || !ent->locked) {
                 /* Preempt enough things from the cache to make room */
                 if(ent) {
-                    if(H5D__chunk_cache_evict(io_info->dset, io_info->md_dxpl_id, io_info->dxpl_cache, ent, TRUE) < 0)
+                    if(H5D__chunk_cache_evict(io_info->dset, ent, TRUE) < 0)
                         HGOTO_ERROR(H5E_IO, H5E_CANTINIT, NULL, "unable to preempt chunk from cache")
                 } /* end if */
-                if(H5D__chunk_cache_prune(io_info->dset, io_info->md_dxpl_id, io_info->dxpl_cache, chunk_size) < 0)
+                if(H5D__chunk_cache_prune(io_info->dset, chunk_size) < 0)
                     HGOTO_ERROR(H5E_IO, H5E_CANTINIT, NULL, "unable to preempt chunk(s) from cache")
 
                 /* Create a new entry */
@@ -3882,7 +3801,7 @@ H5D__chunk_unlock(const H5D_io_info_t *io_info, const H5D_chunk_ud_t *udata,
             fake_ent.chunk_block.length = udata->chunk_block.length;
             fake_ent.chunk = (uint8_t *)chunk;
 
-            if(H5D__chunk_flush_entry(io_info->dset, io_info->md_dxpl_id, io_info->dxpl_cache, &fake_ent, TRUE) < 0)
+            if(H5D__chunk_flush_entry(io_info->dset, &fake_ent, TRUE) < 0)
                 HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush indexed storage buffer")
         } /* end if */
         else {
@@ -3959,13 +3878,11 @@ H5D__chunk_allocated_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_allocated(H5D_t *dset, hid_t dxpl_id, hsize_t *nbytes)
+H5D__chunk_allocated(const H5D_t *dset, hsize_t *nbytes)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
     const H5D_rdcc_t   *rdcc = &(dset->shared->cache.chunk);	/* Raw data chunk cache */
     H5D_rdcc_ent_t     *ent;            /* Cache entry  */
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     hsize_t chunk_bytes = 0;            /* Number of bytes allocated for chunks */
     H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk);
     herr_t ret_value = SUCCEED;         /* Return value */
@@ -3976,20 +3893,14 @@ H5D__chunk_allocated(H5D_t *dset, hid_t dxpl_id, hsize_t *nbytes)
     HDassert(dset->shared);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
 
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
     /* Search for cached chunks that haven't been written out */
-    for(ent = rdcc->head; ent; ent = ent->next) {
+    for(ent = rdcc->head; ent; ent = ent->next)
         /* Flush the chunk out to disk, to make certain the size is correct later */
-        if(H5D__chunk_flush_entry(dset, dxpl_id, dxpl_cache, ent, FALSE) < 0)
+        if(H5D__chunk_flush_entry(dset, ent, FALSE) < 0)
             HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush indexed storage buffer")
-    } /* end for */
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -4040,15 +3951,11 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
     hbool_t     should_fill = FALSE; /* Whether fill values should be written */
     void        *unfilt_fill_buf = NULL; /* Unfiltered fill value buffer */
     void        **fill_buf = NULL;      /* Pointer to the fill buffer to use for a chunk */
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
 #ifdef H5_HAVE_PARALLEL
     hbool_t     blocks_written = FALSE; /* Flag to indicate that chunk was actually written */
     hbool_t     using_mpi = FALSE;    /* Flag to indicate that the file is being accessed with an MPI-capable file driver */
     H5D_chunk_coll_info_t chunk_info; /* chunk address information for doing I/O */
 #endif /* H5_HAVE_PARALLEL */
-    hid_t       md_dxpl_id = io_info->md_dxpl_id;
-    hid_t       raw_dxpl_id = io_info->raw_dxpl_id;
     hbool_t	carry;          /* Flag to indicate that chunk increment carrys to higher dimension (sorta) */
     unsigned    space_ndims;    /* Dataset's space rank */
     const hsize_t *space_dim;   /* Dataset's dataspace dimensions */
@@ -4063,14 +3970,12 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
     const H5O_storage_chunk_t *sc = &(layout->storage.u.chunk);
     herr_t	ret_value = SUCCEED;	/* Return value */
 
-    FUNC_ENTER_PACKAGE_TAG(md_dxpl_id, dset->oloc.addr, FAIL)
+    FUNC_ENTER_PACKAGE_TAG(dset->oloc.addr)
 
     /* Check args */
     HDassert(dset && H5D_CHUNKED == layout->type);
     HDassert(layout->u.chunk.ndims > 0 && layout->u.chunk.ndims <= H5O_LAYOUT_NDIMS);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
-    HDassert(TRUE == H5P_isa_class(md_dxpl_id, H5P_DATASET_XFER));
-    HDassert(TRUE == H5P_isa_class(raw_dxpl_id, H5P_DATASET_XFER));
 
     /* Retrieve the dataset dimensions */
     space_dim = dset->shared->curr_dims;
@@ -4100,10 +4005,6 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
     } /* end if */
 #endif  /* H5_HAVE_PARALLEL */
 
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(raw_dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
     /* Calculate the minimum and maximum chunk offsets in each dimension, and
      * determine if there are any unfiltered partial edge chunks.  Note that we
      * assume here that all elements of space_dim are > 0.  This is checked at
@@ -4154,7 +4055,7 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
         if(H5D__fill_init(&fb_info, NULL, (H5MM_allocate_t)H5D__chunk_mem_alloc,
                 (void *)pline, (H5MM_free_t)H5D__chunk_mem_xfree, (void *)pline,
                 &dset->shared->dcpl_cache.fill, dset->shared->type,
-                dset->shared->type_id, (size_t)0, orig_chunk_size, md_dxpl_id) < 0)
+                dset->shared->type_id, (size_t)0, orig_chunk_size) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize fill buffer info")
         fb_info_init = TRUE;
 
@@ -4168,6 +4069,8 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
          *      it doesn't contain any non-default VL datatype fill values)
          */
         if(!fb_info.has_vlen_fill_type && pline->nused > 0) {
+            H5Z_EDC_t err_detect;               /* Error detection info */
+            H5Z_cb_t filter_cb;                 /* I/O filter callback function */
             size_t buf_size = orig_chunk_size;
 
             /* If the dataset has disabled partial chunk filters, create a copy
@@ -4178,8 +4081,14 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
                 HDmemcpy(unfilt_fill_buf, fb_info.fill_buf, orig_chunk_size);
             } /* end if */
 
+            /* Retrieve filter settings from API context */
+            if(H5CX_get_err_detect(&err_detect) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get error detection info")
+            if(H5CX_get_filter_cb(&filter_cb) < 0)
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get I/O filter callback function")
+
             /* Push the chunk through the filters */
-            if(H5Z_pipeline(pline, 0, &filter_mask, dxpl_cache->err_detect, dxpl_cache->filter_cb, &orig_chunk_size, &buf_size, &fb_info.fill_buf) < 0)
+            if(H5Z_pipeline(pline, 0, &filter_mask, err_detect, filter_cb, &orig_chunk_size, &buf_size, &fb_info.fill_buf) < 0)
                 HGOTO_ERROR(H5E_PLINE, H5E_WRITEERROR, FAIL, "output pipeline failed")
 #if H5_SIZEOF_SIZE_T > 4
             /* Check for the chunk expanding too much to encode in a 32-bit value */
@@ -4191,7 +4100,6 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = md_dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -4261,7 +4169,7 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
             hbool_t need_insert = FALSE;    /* Whether the chunk needs to be inserted into the index */
 
 	    /* Look up this chunk */
-	    if(H5D__chunk_lookup(dset, md_dxpl_id, scaled, &udata) < 0)
+	    if(H5D__chunk_lookup(dset, scaled, &udata) < 0)
 		HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 #ifndef NDEBUG
             /* None of the chunks should be allocated */
@@ -4302,15 +4210,23 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
                 } /* end if */
 
                 /* Fill the buffer with VL datatype fill values */
-                if(H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf, md_dxpl_id) < 0)
+                if(H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "can't refill fill value buffer")
 
                 /* Check if there are filters which need to be applied to the chunk */
                 if((pline->nused > 0) && !nunfilt_edge_chunk_dims) {
+                    H5Z_EDC_t err_detect;       /* Error detection info */
+                    H5Z_cb_t filter_cb;         /* I/O filter callback function */
                     size_t nbytes = orig_chunk_size;
 
+                    /* Retrieve filter settings from API context */
+                    if(H5CX_get_err_detect(&err_detect) < 0)
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get error detection info")
+                    if(H5CX_get_filter_cb(&filter_cb) < 0)
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get I/O filter callback function")
+
                     /* Push the chunk through the filters */
-                    if(H5Z_pipeline(pline, 0, &filter_mask, dxpl_cache->err_detect, dxpl_cache->filter_cb, &nbytes, &fb_info.fill_buf_size, &fb_info.fill_buf) < 0)
+                    if(H5Z_pipeline(pline, 0, &filter_mask, err_detect, filter_cb, &nbytes, &fb_info.fill_buf_size, &fb_info.fill_buf) < 0)
                         HGOTO_ERROR(H5E_PLINE, H5E_WRITEERROR, FAIL, "output pipeline failed")
 
 #if H5_SIZEOF_SIZE_T > 4
@@ -4369,7 +4285,7 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
                 } /* end if */
                 else {
 #endif /* H5_HAVE_PARALLEL */
-                    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, chunk_size, raw_dxpl_id, *fill_buf) < 0)
+                    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, udata.chunk_block.offset, chunk_size, *fill_buf) < 0)
                         HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file")
 #ifdef H5_HAVE_PARALLEL
                 } /* end else */
@@ -4433,7 +4349,7 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_
 #ifdef H5_HAVE_PARALLEL
     /* do final collective I/O */
     if(using_mpi && blocks_written)
-        if(H5D__chunk_collective_fill(dset, raw_dxpl_id, &chunk_info, chunk_size, fb_info.fill_buf) < 0)
+        if(H5D__chunk_collective_fill(dset, &chunk_info, chunk_size, fb_info.fill_buf) < 0)
             HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file")
 #endif /* H5_HAVE_PARALLEL */
 
@@ -4453,7 +4369,7 @@ done:
         H5MM_free(chunk_info.addr);
 #endif
 
-    FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL)
+    FUNC_LEAVE_NOAPI_TAG(ret_value)
 } /* end H5D__chunk_allocate() */
 
 
@@ -4474,7 +4390,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_update_old_edge_chunks(H5D_t *dset, hid_t dxpl_id, hsize_t old_dim[])
+H5D__chunk_update_old_edge_chunks(H5D_t *dset, hsize_t old_dim[])
 {
     hsize_t     old_edge_chunk_sc[H5O_LAYOUT_NDIMS]; /* Offset of first previously incomplete chunk in each dimension */
     hsize_t     max_edge_chunk_sc[H5O_LAYOUT_NDIMS]; /* largest offset of chunks that might need to be modified in each dimension */
@@ -4489,8 +4405,6 @@ H5D__chunk_update_old_edge_chunks(H5D_t *dset, hid_t dxpl_id, hsize_t old_dim[])
     H5D_io_info_t chk_io_info;          /* Chunked I/O info object */
     H5D_chunk_ud_t chk_udata;           /* User data for locking chunk */
     H5D_storage_t chk_store;            /* Chunk storage information */
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     void        *chunk;                 /* The file chunk  */
     hbool_t     carry;                  /* Flag to indicate that chunk increment carrys to higher dimension (sorta) */
     const H5O_storage_chunk_t *sc = &(layout->storage.u.chunk);
@@ -4502,7 +4416,6 @@ H5D__chunk_update_old_edge_chunks(H5D_t *dset, hid_t dxpl_id, hsize_t old_dim[])
     HDassert(dset && H5D_CHUNKED == layout->type);
     HDassert(layout->u.chunk.ndims > 0 && layout->u.chunk.ndims <= H5O_LAYOUT_NDIMS);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
-    HDassert(TRUE == H5P_isa_class(dxpl_id, H5P_DATASET_XFER));
     HDassert(pline->nused > 0);
     HDassert(layout->u.chunk.flags
             & H5O_LAYOUT_CHUNK_DONT_FILTER_PARTIAL_BOUND_CHUNKS);
@@ -4526,15 +4439,12 @@ H5D__chunk_update_old_edge_chunks(H5D_t *dset, hid_t dxpl_id, hsize_t old_dim[])
     /*
      * Initialize structures needed to lock chunks into cache
      */
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
 
     /* Set up chunked I/O info object, for operations on chunks (in callback).
      * Note that we only need to set chunk_offset once, as the array's address
      * will never change. */
     chk_store.chunk.scaled = chunk_sc;
-    H5D_BUILD_IO_INFO_RD(&chk_io_info, dset, dxpl_cache, dxpl_id, H5AC_rawdata_dxpl_id, &chk_store, NULL);
+    H5D_BUILD_IO_INFO_RD(&chk_io_info, dset, &chk_store, NULL);
 
     /*
      * Determine the edges of the dataset which need to be modified
@@ -4587,7 +4497,7 @@ H5D__chunk_update_old_edge_chunks(H5D_t *dset, hid_t dxpl_id, hsize_t old_dim[])
                     && !H5D__chunk_is_partial_edge_chunk(space_ndims, chunk_dim, chunk_sc, space_dim));
 
             /* Lookup the chunk */
-            if(H5D__chunk_lookup(dset, dxpl_id, chunk_sc, &chk_udata) < 0)
+            if(H5D__chunk_lookup(dset, chunk_sc, &chk_udata) < 0)
                 HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
 
             /* If this chunk does not exist in cache or on disk, no need to do
@@ -4652,8 +4562,8 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
-    H5D_chunk_coll_info_t *chunk_info, size_t chunk_size, const void *fill_buf)
+H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info,
+    size_t chunk_size, const void *fill_buf)
 {
     MPI_Comm	mpi_comm = MPI_COMM_NULL;	/* MPI communicator for file */
     int         mpi_rank = (-1);    /* This process's rank  */
@@ -4665,7 +4575,8 @@ H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
     MPI_Aint    *chunk_disp_array = NULL;
     int         *block_lens = NULL;
     MPI_Datatype mem_type, file_type;
-    hid_t       data_dxpl_id = -1;  /* DXPL ID to use for raw data I/O operations */
+    H5FD_mpio_xfer_t prev_xfer_mode;    /* Previous data xfer mode */
+    hbool_t     have_xfer_mode = FALSE; /* Whether the previous xffer mode has been retrieved */
     int         i;                  /* Local index variable */
     herr_t ret_value = SUCCEED;     /* Return value */
 
@@ -4683,10 +4594,6 @@ H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
     if((mpi_size = H5F_mpi_get_size(dset->oloc.file)) < 0)
         HGOTO_ERROR(H5E_INTERNAL, H5E_MPI, FAIL, "Can't retrieve MPI size")
 
-    /* Get a copy of the DXPL, to modify */
-    if((data_dxpl_id = H5P_copy_plist((H5P_genplist_t *)H5I_object(dxpl_id), TRUE)) < 0)
-        HGOTO_ERROR(H5E_PLIST, H5E_CANTCOPY, FAIL, "can't copy property list")
-
     /* Distribute evenly the number of blocks between processes. */
     num_blocks = chunk_info->num_io / mpi_size; /* value should be the same on all procs */
 
@@ -4745,29 +4652,23 @@ H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
     if(MPI_SUCCESS != (mpi_code = MPI_Type_commit(&mem_type)))
         HMPI_GOTO_ERROR(FAIL, "MPI_Type_commit failed", mpi_code)
 
-    /* set MPI-IO VFD properties */
-    {
-        H5FD_mpio_xfer_t xfer_mode = H5FD_MPIO_COLLECTIVE;
-        H5P_genplist_t  *plist;      /* Property list pointer */
+    /* Set MPI-IO VFD properties */
 
-        if(NULL == (plist = H5P_object_verify(data_dxpl_id, H5P_DATASET_XFER)))
-            HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a dataset transfer list")
+    /* Set MPI datatypes for operation */
+    if(H5CX_set_mpi_coll_datatypes(mem_type, file_type) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set MPI-I/O properties")
 
-        /* Set buffer MPI type */
-        if(H5P_set(plist, H5FD_MPI_XFER_MEM_MPI_TYPE_NAME, &mem_type) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set MPI-I/O property")
+    /* Get current transfer mode */
+    if(H5CX_get_io_xfer_mode(&prev_xfer_mode) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set transfer mode")
+    have_xfer_mode = TRUE;
 
-        /* Set File MPI type */
-        if(H5P_set(plist, H5FD_MPI_XFER_FILE_MPI_TYPE_NAME, &file_type) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set MPI-I/O property")
+    /* Set transfer mode */
+    if(H5CX_set_io_xfer_mode(H5FD_MPIO_COLLECTIVE) < 0)
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set transfer mode")
 
-        /* set transfer mode */
-        if(H5P_set(plist, H5D_XFER_IO_XFER_MODE_NAME, &xfer_mode) < 0)
-            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set transfer mode")
-    }
-
-    /* low level write (collective) */
-    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, (haddr_t)0, (blocks) ? (size_t)1 : (size_t)0, data_dxpl_id, fill_buf) < 0)
+    /* Low-level write (collective) */
+    if(H5F_block_write(dset->oloc.file, H5FD_MEM_DRAW, (haddr_t)0, (blocks) ? (size_t)1 : (size_t)0, fill_buf) < 0)
         HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file")
 
     /* Barrier so processes don't race ahead */
@@ -4775,8 +4676,10 @@ H5D__chunk_collective_fill(const H5D_t *dset, hid_t dxpl_id,
         HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_code)
 
 done:
-    if(data_dxpl_id > 0 && H5I_dec_ref(data_dxpl_id) < 0)
-        HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "Can't free property list")
+    if(have_xfer_mode)
+        /* Set transfer mode */
+        if(H5CX_set_io_xfer_mode(prev_xfer_mode) < 0)
+            HDONE_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set transfer mode")
 
     /* free things */
     if(MPI_SUCCESS != (mpi_code = MPI_Type_free(&file_type)))
@@ -4830,7 +4733,7 @@ H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk)
     H5_CHECKED_ASSIGN(chunk_size, size_t, layout->u.chunk.size, uint32_t);
 
     /* Get the info for the chunk in the file */
-    if(H5D__chunk_lookup(dset, io_info->md_dxpl_id, scaled, &chk_udata) < 0)
+    if(H5D__chunk_lookup(dset, scaled, &chk_udata) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk address")
     chk_udata.new_unfilt_chunk = new_unfilt_chunk;
 
@@ -4844,7 +4747,7 @@ H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk)
         if(H5D__fill_init(&udata->fb_info, NULL, NULL, NULL, NULL, NULL,
                 &dset->shared->dcpl_cache.fill,
                 dset->shared->type, dset->shared->type_id, (size_t)udata->elmts_per_chunk,
-                chunk_size, io_info->md_dxpl_id) < 0)
+                chunk_size) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize fill buffer info")
         udata->fb_info_init = TRUE;
     } /* end if */
@@ -4881,7 +4784,7 @@ H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk)
     /* Check for VL datatype & non-default fill value */
     if(udata->fb_info.has_vlen_fill_type)
         /* Re-fill the buffer to use for this I/O operation */
-        if(H5D__fill_refill_vl(&udata->fb_info, (size_t)sel_nelmts, io_info->md_dxpl_id) < 0)
+        if(H5D__fill_refill_vl(&udata->fb_info, (size_t)sel_nelmts) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "can't refill fill value buffer")
 
     /* Allocate the chunk selection iterator */
@@ -4894,7 +4797,7 @@ H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk)
     chunk_iter_init = TRUE;
 
     /* Scatter the data into memory */
-    if(H5D__scatter_mem(udata->fb_info.fill_buf, udata->chunk_space, chunk_iter, (size_t)sel_nelmts, io_info->dxpl_cache, chunk/*out*/) < 0)
+    if(H5D__scatter_mem(udata->fb_info.fill_buf, udata->chunk_space, chunk_iter, (size_t)sel_nelmts, chunk/*out*/) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "scatter failed")
 
 
@@ -5018,7 +4921,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_prune_by_extent(H5D_t *dset, hid_t dxpl_id, const hsize_t *old_dim)
+H5D__chunk_prune_by_extent(H5D_t *dset, const hsize_t *old_dim)
 {
     hsize_t                 min_mod_chunk_sc[H5O_LAYOUT_NDIMS]; /* Scaled offset of first chunk to modify in each dimension */
     hsize_t                 max_mod_chunk_sc[H5O_LAYOUT_NDIMS]; /* Scaled offset of last chunk to modify in each dimension */
@@ -5029,8 +4932,6 @@ H5D__chunk_prune_by_extent(H5D_t *dset, hid_t dxpl_id, const hsize_t *old_dim)
     H5D_chk_idx_info_t      idx_info;           /* Chunked index info */
     H5D_io_info_t           chk_io_info;        /* Chunked I/O info object */
     H5D_storage_t           chk_store;          /* Chunk storage information */
-    H5D_dxpl_cache_t        _dxpl_cache;        /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t       *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     const H5O_layout_t     *layout = &(dset->shared->layout);   /* Dataset's layout */
     const H5D_rdcc_t       *rdcc = &(dset->shared->cache.chunk);	/*raw data chunk cache */
     unsigned                space_ndims;        /* Dataset's space rank */
@@ -5057,11 +4958,6 @@ H5D__chunk_prune_by_extent(H5D_t *dset, hid_t dxpl_id, const hsize_t *old_dim)
     HDassert(dset && H5D_CHUNKED == layout->type);
     HDassert(layout->u.chunk.ndims > 0 && layout->u.chunk.ndims <= H5O_LAYOUT_NDIMS);
     H5D_CHUNK_STORAGE_INDEX_CHK(sc);
-    HDassert(dxpl_cache);
-
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
 
     /* Go get the rank & dimensions (including the element size) */
     space_dim = dset->shared->curr_dims;
@@ -5102,11 +4998,10 @@ H5D__chunk_prune_by_extent(H5D_t *dset, hid_t dxpl_id, const hsize_t *old_dim)
      * Note that we only need to set scaled once, as the array's address
      * will never change. */
     chk_store.chunk.scaled = scaled;
-    H5D_BUILD_IO_INFO_RD(&chk_io_info, dset, dxpl_cache, dxpl_id, H5AC_rawdata_dxpl_id, &chk_store, NULL);
+    H5D_BUILD_IO_INFO_RD(&chk_io_info, dset, &chk_store, NULL);
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -5265,13 +5160,13 @@ H5D__chunk_prune_by_extent(H5D_t *dset, hid_t dxpl_id, const hsize_t *old_dim)
 #endif /* NDEBUG */
 
                 /* Check if the chunk exists in cache or on disk */
-                if(H5D__chunk_lookup(dset, dxpl_id, scaled, &chk_udata) < 0)
+                if(H5D__chunk_lookup(dset, scaled, &chk_udata) < 0)
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "error looking up chunk")
 
                 /* Evict the entry from the cache if present, but do not flush
                  * it to disk */
                 if(UINT_MAX != chk_udata.idx_hint)
-                    if(H5D__chunk_cache_evict(dset, dxpl_id, dxpl_cache, rdcc->slot[chk_udata.idx_hint], FALSE) < 0)
+                    if(H5D__chunk_cache_evict(dset, rdcc->slot[chk_udata.idx_hint], FALSE) < 0)
                         HGOTO_ERROR(H5E_DATASET, H5E_CANTREMOVE, FAIL, "unable to evict chunk")
 
                 /* Remove the chunk from disk, if present */
@@ -5417,7 +5312,6 @@ H5D__chunk_addrmap(const H5D_io_info_t *io_info, haddr_t chunk_addr[])
 
     /* Compose chunked index info struct */
     idx_info.f = dset->oloc.file;
-    idx_info.dxpl_id = io_info->md_dxpl_id;
     idx_info.pline = &dset->shared->dcpl_cache.pline;
     idx_info.layout = &dset->shared->layout.u.chunk;
     idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -5446,7 +5340,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_delete(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_storage_t *storage)
+H5D__chunk_delete(H5F_t *f, H5O_t *oh, H5O_storage_t *storage)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
     H5O_layout_t layout;                /* Dataset layout  message */
@@ -5469,7 +5363,7 @@ H5D__chunk_delete(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_storage_t *storage)
     if((exists = H5O_msg_exists_oh(oh, H5O_PLINE_ID)) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to check for object header message")
     else if(exists) {
-        if(NULL == H5O_msg_read_oh(f, dxpl_id, oh, H5O_PLINE_ID, &pline))
+        if(NULL == H5O_msg_read_oh(f, oh, H5O_PLINE_ID, &pline))
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get I/O pipeline message")
         pline_read = TRUE;
     } /* end else if */
@@ -5480,7 +5374,7 @@ H5D__chunk_delete(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_storage_t *storage)
     if((exists = H5O_msg_exists_oh(oh, H5O_LAYOUT_ID)) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to check for object header message")
     else if(exists) {
-        if(NULL == H5O_msg_read_oh(f, dxpl_id, oh, H5O_LAYOUT_ID, &layout))
+        if(NULL == H5O_msg_read_oh(f, oh, H5O_LAYOUT_ID, &layout))
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get layout message")
         layout_read = TRUE;
     } /* end else if */
@@ -5489,7 +5383,6 @@ H5D__chunk_delete(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_storage_t *storage)
 
     /* Compose chunked index info struct */
     idx_info.f = f;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &pline;
     idx_info.layout = &layout.u.chunk;
     idx_info.storage = &storage->u.chunk;
@@ -5526,14 +5419,12 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_update_cache(H5D_t *dset, hid_t dxpl_id)
+H5D__chunk_update_cache(H5D_t *dset)
 {
     H5D_rdcc_t         *rdcc = &(dset->shared->cache.chunk);	/*raw data chunk cache */
     H5D_rdcc_ent_t     *ent, *next;	/*cache entry  */
     H5D_rdcc_ent_t     tmp_head;        /* Sentinel entry for temporary entry list */
     H5D_rdcc_ent_t     *tmp_tail;       /* Tail pointer for temporary entry list */
-    H5D_dxpl_cache_t _dxpl_cache;       /* Data transfer property cache buffer */
-    H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache;   /* Data transfer property cache */
     herr_t              ret_value = SUCCEED;      /* Return value */
 
     FUNC_ENTER_PACKAGE
@@ -5545,10 +5436,6 @@ H5D__chunk_update_cache(H5D_t *dset, hid_t dxpl_id)
     /* Check the rank */
     HDassert((dset->shared->layout.u.chunk.ndims - 1) > 1);
 
-    /* Fill the DXPL cache values for later use */
-    if(H5D__get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
-
     /* Add temporary entry list to rdcc */
     (void)HDmemset(&tmp_head, 0, sizeof(tmp_head));
     rdcc->tmp_head = &tmp_head;
@@ -5618,7 +5505,7 @@ H5D__chunk_update_cache(H5D_t *dset, hid_t dxpl_id)
         ent = tmp_head.tmp_next;
 
         /* Remove the old entry from the cache */
-        if(H5D__chunk_cache_evict(dset, dxpl_id, dxpl_cache, ent, TRUE) < 0)
+        if(H5D__chunk_cache_evict(dset, ent, TRUE) < 0)
             HGOTO_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush one or more raw data chunks")
     } /* end while */
 
@@ -5664,7 +5551,6 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
     H5Z_cb_t                filter_cb;                  /* Filter failure callback struct */
     int                     ret_value = H5_ITER_CONT;   /* Return value */
 
-
     FUNC_ENTER_STATIC
 
     /* Get 'size_t' local value for number of bytes in chunk */
@@ -5756,7 +5642,7 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
         }
         else {
             /* read chunk data from the source file */
-            if(H5F_block_read(udata->file_src, H5FD_MEM_DRAW, chunk_rec->chunk_addr, nbytes, H5AC_rawdata_dxpl_id, buf) < 0)
+            if(H5F_block_read(udata->file_src, H5FD_MEM_DRAW, chunk_rec->chunk_addr, nbytes, buf) < 0)
                 HGOTO_ERROR(H5E_IO, H5E_READERROR, H5_ITER_ERROR, "unable to read raw data chunk")
         }
     }
@@ -5782,7 +5668,7 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
 
         /* Convert from source file to memory */
         H5_CHECK_OVERFLOW(udata->nelmts, uint32_t, size_t);
-        if(H5T_convert(tpath_src_mem, tid_src, tid_mem, (size_t)udata->nelmts, (size_t)0, (size_t)0, buf, bkg, udata->idx_info_dst->dxpl_id) < 0)
+        if(H5T_convert(tpath_src_mem, tid_src, tid_mem, (size_t)udata->nelmts, (size_t)0, (size_t)0, buf, bkg) < 0)
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5_ITER_ERROR, "datatype conversion failed")
 
         /* Copy into another buffer, to reclaim memory later */
@@ -5792,11 +5678,11 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
         HDmemset(bkg, 0, buf_size);
 
         /* Convert from memory to destination file */
-        if(H5T_convert(tpath_mem_dst, tid_mem, tid_dst, udata->nelmts, (size_t)0, (size_t)0, buf, bkg, udata->idx_info_dst->dxpl_id) < 0)
+        if(H5T_convert(tpath_mem_dst, tid_mem, tid_dst, udata->nelmts, (size_t)0, (size_t)0, buf, bkg) < 0)
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5_ITER_ERROR, "datatype conversion failed")
 
         /* Reclaim space from variable length data */
-        if(H5D_vlen_reclaim(tid_mem, buf_space, udata->idx_info_dst->dxpl_id, reclaim_buf) < 0)
+        if(H5D_vlen_reclaim(tid_mem, buf_space, reclaim_buf) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_BADITER, H5_ITER_ERROR, "unable to reclaim variable-length data")
     } /* end if */
     else if(fix_ref) {
@@ -5809,7 +5695,7 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
             ref_count = nbytes / H5T_get_size(udata->dt_src);
 
             /* Copy the reference elements */
-            if(H5O_copy_expand_ref(udata->file_src, buf, udata->idx_info_dst->dxpl_id, udata->idx_info_dst->f, bkg, ref_count, H5T_get_ref_type(udata->dt_src), udata->cpy_info) < 0)
+            if(H5O_copy_expand_ref(udata->file_src, buf, udata->idx_info_dst->f, bkg, ref_count, H5T_get_ref_type(udata->dt_src), udata->cpy_info) < 0)
                 HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, H5_ITER_ERROR, "unable to copy reference attribute")
         } /* end if */
 
@@ -5850,19 +5736,19 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
 
     /* Write chunk data to destination file */
     HDassert(H5F_addr_defined(udata_dst.chunk_block.offset));
-    if(H5F_block_write(udata->idx_info_dst->f, H5FD_MEM_DRAW, udata_dst.chunk_block.offset, nbytes, H5AC_rawdata_dxpl_id, buf) < 0)
+    if(H5F_block_write(udata->idx_info_dst->f, H5FD_MEM_DRAW, udata_dst.chunk_block.offset, nbytes, buf) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, H5_ITER_ERROR, "unable to write raw data to file")
 
-    /* Set metadata tag in dxpl_id */
-    H5_BEGIN_TAG(udata->idx_info_dst->dxpl_id, H5AC__COPIED_TAG, H5_ITER_ERROR);
+    /* Set metadata tag in API context */
+    H5_BEGIN_TAG(H5AC__COPIED_TAG);
 
     /* Insert chunk record into index */
     if(need_insert && udata->idx_info_dst->storage->ops->insert)
         if((udata->idx_info_dst->storage->ops->insert)(udata->idx_info_dst, &udata_dst, NULL) < 0)
             HGOTO_ERROR_TAG(H5E_DATASET, H5E_CANTINSERT, H5_ITER_ERROR, "unable to insert chunk addr into index")
 
-    /* Reset metadata tag in dxpl_id */
-    H5_END_TAG(H5_ITER_ERROR);
+    /* Reset metadata tag in API context */
+    H5_END_TAG
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
@@ -5886,7 +5772,7 @@ herr_t
 H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src,
     H5O_layout_chunk_t *layout_src, H5F_t *f_dst, H5O_storage_chunk_t *storage_dst,
     const H5S_extent_t *ds_extent_src, const H5T_t *dt_src,
-    const H5O_pline_t *pline_src, H5O_copy_t *cpy_info, hid_t dxpl_id)
+    const H5O_pline_t *pline_src, H5O_copy_t *cpy_info)
 {
     H5D_chunk_it_ud3_t udata;           /* User data for iteration callback */
     H5D_chk_idx_info_t idx_info_dst;    /* Dest. chunked index info */
@@ -5953,13 +5839,11 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src,
 
     /* Compose source & dest chunked index info structs */
     idx_info_src.f = f_src;
-    idx_info_src.dxpl_id = dxpl_id;
     idx_info_src.pline = pline;
     idx_info_src.layout = layout_src;
     idx_info_src.storage = storage_src;
 
     idx_info_dst.f = f_dst;
-    idx_info_dst.dxpl_id = dxpl_id;
     idx_info_dst.pline = pline;     /* Use same I/O filter pipeline for dest. */
     idx_info_dst.layout = layout_src /* Use same layout for dest. */;
     idx_info_dst.storage = storage_dst;
@@ -5987,7 +5871,7 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src,
         if(NULL == (dt_mem = H5T_copy(dt_src, H5T_COPY_TRANSIENT)))
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy")
         if((tid_mem = H5I_register(H5I_DATATYPE, dt_mem, FALSE)) < 0) {
-            (void)H5T_close(dt_mem);
+            (void)H5T_close_real(dt_mem);
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register memory datatype")
         } /* end if */
 
@@ -5995,18 +5879,18 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src,
         if(NULL == (dt_dst = H5T_copy(dt_src, H5T_COPY_TRANSIENT)))
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy")
         if(H5T_set_loc(dt_dst, f_dst, H5T_LOC_DISK) < 0) {
-            (void)H5T_close(dt_dst);
+            (void)H5T_close_real(dt_dst);
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "cannot mark datatype on disk")
         } /* end if */
         if((tid_dst = H5I_register(H5I_DATATYPE, dt_dst, FALSE)) < 0) {
-            (void)H5T_close(dt_dst);
+            (void)H5T_close_real(dt_dst);
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register destination file datatype")
         } /* end if */
 
         /* Set up the conversion functions */
-        if(NULL == (tpath_src_mem = H5T_path_find(dt_src, dt_mem, NULL, NULL, dxpl_id, FALSE)))
+        if(NULL == (tpath_src_mem = H5T_path_find(dt_src, dt_mem)))
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to convert between src and mem datatypes")
-        if(NULL == (tpath_mem_dst = H5T_path_find(dt_mem, dt_dst, NULL, NULL, dxpl_id, FALSE)))
+        if(NULL == (tpath_mem_dst = H5T_path_find(dt_mem, dt_dst)))
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to convert between mem and dst datatypes")
 
         /* Determine largest datatype size */
@@ -6148,7 +6032,7 @@ done:
 
     /* Clean up any index information */
     if(copy_setup_done)
-        if(storage_src->ops->copy_shutdown && (storage_src->ops->copy_shutdown)(storage_src, storage_dst, dxpl_id) < 0)
+        if(storage_src->ops->copy_shutdown && (storage_src->ops->copy_shutdown)(storage_src, storage_dst) < 0)
             HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "unable to shut down index copying info")
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -6169,7 +6053,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_bh_info(const H5O_loc_t *loc, hid_t dxpl_id, H5O_t *oh, H5O_layout_t *layout,
+H5D__chunk_bh_info(const H5O_loc_t *loc, H5O_t *oh, H5O_layout_t *layout,
     hsize_t *index_size)
 {
     H5D_chk_idx_info_t idx_info;        /* Chunked index info */
@@ -6195,7 +6079,7 @@ H5D__chunk_bh_info(const H5O_loc_t *loc, hid_t dxpl_id, H5O_t *oh, H5O_layout_t
     if((exists = H5O_msg_exists_oh(oh, H5O_PLINE_ID)) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to read object header")
     else if(exists) {
-        if(NULL == H5O_msg_read_oh(loc->file, dxpl_id, oh, H5O_PLINE_ID, &pline))
+        if(NULL == H5O_msg_read_oh(loc->file, oh, H5O_PLINE_ID, &pline))
             HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't find I/O pipeline message")
         pline_read = TRUE;
     } /* end else if */
@@ -6204,13 +6088,12 @@ H5D__chunk_bh_info(const H5O_loc_t *loc, hid_t dxpl_id, H5O_t *oh, H5O_layout_t
 
     /* Compose chunked index info struct */
     idx_info.f = loc->file;
-    idx_info.dxpl_id = dxpl_id;
     idx_info.pline = &pline;
     idx_info.layout = &layout->u.chunk;
     idx_info.storage = &layout->storage.u.chunk;
 
     /* Get the dataspace for the dataset */
-    if(NULL == (space = H5S_read(loc, dxpl_id)))
+    if(NULL == (space = H5S_read(loc)))
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to load dataspace info from dataset header")
 
     /* Allocate any indexing structures */
@@ -6296,7 +6179,7 @@ H5D__chunk_dump_index_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_dump_index(H5D_t *dset, hid_t dxpl_id, FILE *stream)
+H5D__chunk_dump_index(H5D_t *dset, FILE *stream)
 {
     H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk);
     herr_t ret_value = SUCCEED;       /* Return value */
@@ -6318,7 +6201,6 @@ H5D__chunk_dump_index(H5D_t *dset, hid_t dxpl_id, FILE *stream)
 
         /* Compose chunked index info struct */
         idx_info.f = dset->oloc.file;
-        idx_info.dxpl_id = dxpl_id;
         idx_info.pline = &dset->shared->dcpl_cache.pline;
         idx_info.layout = &dset->shared->layout.u.chunk;
         idx_info.storage = &dset->shared->layout.storage.u.chunk;
@@ -6435,12 +6317,12 @@ H5D__nonexistent_readvv_cb(hsize_t H5_ATTR_UNUSED dst_off, hsize_t src_off, size
     /* Initialize the fill value buffer */
     if(H5D__fill_init(&fb_info, (udata->rbuf + src_off), NULL, NULL, NULL, NULL,
             &udata->dset->shared->dcpl_cache.fill, udata->dset->shared->type,
-            udata->dset->shared->type_id, (size_t)0, len, udata->dxpl_id) < 0)
+            udata->dset->shared->type_id, (size_t)0, len) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize fill buffer info")
     fb_info_init = TRUE;
 
     /* Check for VL datatype & fill the buffer with VL datatype fill values */
-    if(fb_info.has_vlen_fill_type && H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf, udata->dxpl_id) < 0)
+    if(fb_info.has_vlen_fill_type && H5D__fill_refill_vl(&fb_info, fb_info.elmts_per_buf) < 0)
         HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "can't refill fill value buffer")
 
 done:
@@ -6494,7 +6376,6 @@ H5D__nonexistent_readvv(const H5D_io_info_t *io_info,
     /* Set up user data for H5VM_opvv() */
     udata.rbuf = (unsigned char *)io_info->u.rbuf;
     udata.dset = io_info->dset;
-    udata.dxpl_id = io_info->md_dxpl_id;
 
     /* Call generic sequence operation routine */
     if((ret_value = H5VM_opvv(chunk_max_nseq, chunk_curr_seq, chunk_len_arr, chunk_off_arr,
@@ -6617,7 +6498,7 @@ H5D__chunk_file_alloc(const H5D_chk_idx_info_t *idx_info, const H5F_block_t *old
                  * outdated version of the B-tree node
                  */
 		if(!(H5F_INTENT(idx_info->f) & H5F_ACC_SWMR_WRITE))
-		    if(H5MF_xfree(idx_info->f, H5FD_MEM_DRAW, idx_info->dxpl_id, old_chunk->offset, old_chunk->length) < 0)
+		    if(H5MF_xfree(idx_info->f, H5FD_MEM_DRAW, old_chunk->offset, old_chunk->length) < 0)
 			HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to free chunk")
 		alloc_chunk = TRUE;
 	    } /* end if */
@@ -6660,7 +6541,7 @@ H5D__chunk_file_alloc(const H5D_chk_idx_info_t *idx_info, const H5F_block_t *old
             case H5D_CHUNK_IDX_SINGLE:
                 HDassert(new_chunk->length > 0);
                 H5_CHECK_OVERFLOW(new_chunk->length, /*From: */uint32_t, /*To: */hsize_t);
-                new_chunk->offset = H5MF_alloc(idx_info->f, H5FD_MEM_DRAW, idx_info->dxpl_id, (hsize_t)new_chunk->length);
+                new_chunk->offset = H5MF_alloc(idx_info->f, H5FD_MEM_DRAW, (hsize_t)new_chunk->length);
                 if(!H5F_addr_defined(new_chunk->offset))
                     HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "file allocation failed")
                 *need_insert = TRUE;
@@ -6734,7 +6615,7 @@ H5D__chunk_format_convert_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
             HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, H5_ITER_ERROR, "memory allocation failed for raw data chunk")
 
         /* Read the non-filtered edge chunk */
-        if (H5F_block_read(new_idx_info->f, H5FD_MEM_DRAW, chunk_addr, read_size, H5AC_rawdata_dxpl_id, buf) < 0)
+        if(H5F_block_read(new_idx_info->f, H5FD_MEM_DRAW, chunk_addr, read_size, buf) < 0)
             HGOTO_ERROR(H5E_IO, H5E_READERROR, H5_ITER_ERROR, "unable to read raw data chunk")
 
         /* Pass the chunk through the pipeline */
@@ -6748,12 +6629,12 @@ H5D__chunk_format_convert_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
 #endif /* H5_SIZEOF_SIZE_T > 4 */
 
         /* Allocate space for the filtered chunk */
-        if ((chunk_addr = H5MF_alloc(new_idx_info->f, H5FD_MEM_DRAW, new_idx_info->dxpl_id, (hsize_t)nbytes)) == HADDR_UNDEF)
+        if ((chunk_addr = H5MF_alloc(new_idx_info->f, H5FD_MEM_DRAW, (hsize_t)nbytes)) == HADDR_UNDEF)
             HGOTO_ERROR(H5E_DATASET, H5E_NOSPACE, H5_ITER_ERROR, "file allocation failed for filtered chunk")
         HDassert(H5F_addr_defined(chunk_addr));
 
         /* Write the filtered chunk to disk */
-        if (H5F_block_write(new_idx_info->f, H5FD_MEM_DRAW, chunk_addr, nbytes, H5AC_rawdata_dxpl_id, buf) < 0)
+        if (H5F_block_write(new_idx_info->f, H5FD_MEM_DRAW, chunk_addr, nbytes, buf) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, H5_ITER_ERROR, "unable to write raw data to file")
     } /* end if */