Backport from RPM 5.4.1 CVS, disabled fsync.

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>

diff -ur rpm-5.4.0.orig/CHANGES rpm-5.4.0/CHANGES
--- rpm-5.4.0.orig/CHANGES	2010-12-29 07:51:38.000000000 -0600
+++ rpm-5.4.0/CHANGES	2011-02-15 20:54:27.021926840 -0600
@@ -1,4 +1,5 @@
 5.4.0 -> 5.4.1:
+    - jbj: remove fsync(2) after file install, its intolerably slow.
 
 5.3.7 -> 5.4.0:
     - jbj: remove markReplacedFiles.
diff -ur rpm-5.4.0.orig/lib/fsm.c rpm-5.4.0/lib/fsm.c
--- rpm-5.4.0.orig/lib/fsm.c	2009-12-10 12:52:18.000000000 -0600
+++ rpm-5.4.0/lib/fsm.c	2011-02-15 20:55:04.372938221 -0600
@@ -1017,7 +1017,17 @@
 	    (void) fsmNext(fsm, IOSM_NOTIFY);
     }
 
+#ifdef DYING
+/* Measurements from installing kernel-source package:
+ * +fsync
+ *     total:               1      0.000000 MB    640.854524 secs
+ * +fdatasync
+ *     total:               1      0.000000 MB    419.983200 secs
+ * w/o fsync/fdsatasync:
+ *     total:               1      0.000000 MB     12.492918 secs
+ */
     xx = fsync(Fileno(fsm->wfd));
+#endif
 
     if (st->st_size > 0 && (fsm->fdigest || fsm->digest)) {
 	void * digest = NULL;