[svn-r7489] Purpose:

    Update

Description:
    A lot of modifications for the FPHDF5 stuff:

        H5AC.c
        H5ACprivate.h - Removed AC_find (it's replaced with AC_protect
        and AC_unprotect). Added flushing if it's an FPHDF5 driver and
        we're doing an AC_set or AC_unprotect with the dirty flag set.

        H5B.c - Split up the B_flush function into different functions
        since the one function was doing serialization which is better
        left as a separate entity.

        H5D.c - Removed some FPHDF5 code that was incorrect

        H5F.c - Split up the F_flush function so that it no longer
        allocates file space. Created new functions (F_init_superblock,
        F_read_superblock, and F_write_superblock) for greater modularity
        and so that the FPHDF5 non-captain processes can read the
        superblock after the captain process writes it.

        H5FD.c - Error message correction.

        H5FDfphdf5.c - Removed MPI barrier call that wasn't needed.

        H5FPclient.c
     	H5FPserver.c - Modified so that if a process requests data that
        isn't exactly aligned, we can return it if we have the block that
        contains the requested address.

        H5G.c
        H5Gent.c
        H5Gnode.c
        H5HL.c
     	H5HLpkg.h
        H5HLprivate.h
        H5Oefl.c - Removed the H5HL_peek function since it was doing a
        (now unsafe) holding of the information in the cache. Replaced
        with protect and unprotect calls.

        H5TB.c - Error fix. The TB_dless function wasn't working
        properly.

        H5Gstab.c - Format change.

        H5err.txt
        H5Edefin.h
        H5Einit.h
     	H5Epubgen.h
        H5Eterm.h - Added new error code.


Platforms tested:
    Modi4 (paralle, Fortran)
    Sol (Fortran)
    Linux (C++, Fortran)
    Copper (Parallel, Fortran)

Misc. update:

1 files changed, 9 insertions, 5 deletions

diff --git a/src/H5TB.c b/src/H5TB.c
index be5952f..be1b1aa 100644
--- a/src/H5TB.c
+++ b/src/H5TB.c
@@ -580,11 +580,15 @@ H5TB_less(H5TB_NODE * root, void * key, H5TB_cmp_t compar, int arg, H5TB_NODE **
 	/* didn't find an exact match, search back up the tree until a node */
 	/* is found with a key less than the key searched for */
     if(cmp!=0) {
-        while((ptr=ptr->Parent)!=NULL) {
-              cmp = KEYcmp(key, ptr->key, arg);
-              if(cmp<0) /* found a node which is less than the search for one */
-                  break;
-          } /* end while */
+        /* If we haven't already found the least node, then backtrack to
+         * find it */
+        if(cmp>0) {
+            while((ptr=ptr->Parent)!=NULL) {
+                  cmp = KEYcmp(key, ptr->key, arg);
+                  if(cmp<0) /* found a node which is less than the search for one */
+                      break;
+              } /* end while */
+        } /* end if */
         if(ptr==NULL) /* didn't find a node in the tree which was less */
             cmp=1;
         else /* reset this for cmp test below */