[svn-r6387] Purpose:

    Bug Fix

Description:
    Metadata cache in parallel I/O can cause hangs in applications which
    perform independent I/O on chunked datasets, because the metadata cache
    can attempt to flush out dirty metadata from only a single process, instead
    of collectively from all processes.

Solution:
    Pass a dataset transfer property list down from every API function which
    could possibly trigger metadata I/O.

    Then, split the metadata cache into two sets of entries to allow dirty
    metadata to be set aside when a hash table collision occurs during
    independent I/O.

Platforms tested:
    Tested h5committest {arabica (fortran), eirene (fortran, C++)
        modi4 (parallel, fortran)}

    FreeBSD 4.7 (sleipnir) serial & parallel

Misc. update:
    Updated release_docs/RELEASE

1 files changed, 0 insertions, 9 deletions

diff --git a/src/H5FDmpio.h b/src/H5FDmpio.h
index de55ccb..be66735 100644
--- a/src/H5FDmpio.h
+++ b/src/H5FDmpio.h
@@ -25,15 +25,6 @@ typedef enum H5FD_mpio_xfer_t {
     H5FD_MPIO_COLLECTIVE
 } H5FD_mpio_xfer_t;
 
-/*
- * MPIO-specific data transfer properties. This struct is here only because
- * we need it in special case code throughout the library. Applications
- * please use H5Pset_dxpl_mpio() instead.
- */
-typedef struct H5FD_mpio_dxpl_t {
-    H5FD_mpio_xfer_t	xfer_mode;	/*collective or independent I/O	*/
-} H5FD_mpio_dxpl_t;
-    
 /* Macros */
 
 #define IS_H5FD_MPIO(f)	/* (H5F_t *f) */				    \