This is a delay diff for coreutils-5.97-23.el5_4.2.src.rpm
(Scientific Linux 5.4) to add a -D option for rm, chown and chmod
so that one can limit the amount of parallel operations in
cluster filesystems. All other patches must have been applied
before, e.g.:

$ quilt -v setup coreutils.spec
[...]
$ cd coreutils-5.97
$ quilt push -a
[...]
$ patch -p1 < ~/coreutils-5.97-delay.diff
patching file src/chmod.c
patching file src/chown.c
patching file src/chown-core.c
patching file src/chown-core.h
patching file src/remove.c
patching file src/remove.h
patching file src/rm.c
$

signed off by Sebastian Krahmer <krahmer [at] suse de>

diff -ruN coreutils-5.97/src/chmod.c coreutils-5.97.delay/src/chmod.c
--- coreutils-5.97/src/chmod.c	2010-03-10 11:38:18.000000000 +0100
+++ coreutils-5.97.delay/src/chmod.c	2010-03-10 11:34:07.000000000 +0100
@@ -21,6 +21,9 @@
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 #include "system.h"
 #include "dev-ino.h"
@@ -58,6 +61,8 @@
   V_off
 };
 
+static uint32_t delay = 0;
+
 /* The name the program was run with. */
 char *program_name;
 
@@ -296,6 +301,8 @@
     {
       FTSENT *ent;
 
+      if (delay)
+	usleep(delay);
       ent = fts_read (fts);
       if (ent == NULL)
 	{
@@ -337,6 +344,7 @@
       fputs (_("\
 Change the mode of each FILE to MODE.\n\
 \n\
+  -D delay                delay in usec between two operations (default 0)\n\
   -c, --changes           like verbose but report only when a change is made\n\
 "), stdout);
       fputs (_("\
@@ -385,12 +393,15 @@
   recurse = force_silent = diagnose_surprises = false;
 
   while ((c = getopt_long (argc, argv,
-			   "Rcfvr::w::x::X::s::t::u::g::o::a::,::+::=::",
+			   "D:Rcfvr::w::x::X::s::t::u::g::o::a::,::+::=::",
 			   long_options, NULL))
 	 != -1)
     {
       switch (c)
 	{
+	case 'D':
+		delay = strtoul(optarg, NULL, 10);
+		break;
 	case 'r':
 	case 'w':
 	case 'x':
diff -ruN coreutils-5.97/src/chown.c coreutils-5.97.delay/src/chown.c
--- coreutils-5.97/src/chown.c	2005-05-14 09:58:36.000000000 +0200
+++ coreutils-5.97.delay/src/chown.c	2010-03-10 11:31:17.000000000 +0100
@@ -100,6 +100,7 @@
 Change the owner and/or group of each FILE to OWNER and/or GROUP.\n\
 With --reference, change the owner and group of each FILE to those of RFILE.\n\
 \n\
+  -D delay               delay in usec between two chown operations (default 0)\n\
   -c, --changes          like verbose but report only when a change is made\n\
       --dereference      affect the referent of each symbolic link, rather\n\
                          than the symbolic link itself (this is the default)\n\
@@ -195,11 +196,14 @@
 
   chopt_init (&chopt);
 
-  while ((optc = getopt_long (argc, argv, "HLPRcfhv", long_options, NULL))
+  while ((optc = getopt_long (argc, argv, "HLPRcfhvD:", long_options, NULL))
 	 != -1)
     {
       switch (optc)
 	{
+	case 'D':
+	  chopt.delay = strtoul(optarg, NULL, 10);
+          break;
 	case 'H': /* Traverse command-line symlinks-to-directories.  */
 	  bit_flags = FTS_COMFOLLOW | FTS_PHYSICAL;
 	  break;
diff -ruN coreutils-5.97/src/chown-core.c coreutils-5.97.delay/src/chown-core.c
--- coreutils-5.97/src/chown-core.c	2010-03-10 11:38:18.000000000 +0100
+++ coreutils-5.97.delay/src/chown-core.c	2010-03-10 11:40:08.000000000 +0100
@@ -22,6 +22,8 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <grp.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 #include "system.h"
 #include "chown-core.h"
@@ -57,6 +59,7 @@
   chopt->force_silent = false;
   chopt->user_name = NULL;
   chopt->group_name = NULL;
+  chopt->delay = 0;
 }
 
 extern void
@@ -463,6 +466,8 @@
     {
       FTSENT *ent;
 
+      if (chopt->delay)
+	usleep(chopt->delay);
       ent = fts_read (fts);
       if (ent == NULL)
 	{
diff -ruN coreutils-5.97/src/chown-core.h coreutils-5.97.delay/src/chown-core.h
--- coreutils-5.97/src/chown-core.h	2005-05-14 09:58:36.000000000 +0200
+++ coreutils-5.97.delay/src/chown-core.h	2010-03-10 11:28:32.000000000 +0100
@@ -21,6 +21,8 @@
 
 # include "dev-ino.h"
 
+#include <stddef.h>
+
 enum Change_status
 {
   CH_NOT_APPLIED = 1,
@@ -64,6 +66,8 @@
 
   /* The name of the group to which ownership of the files is being given. */
   char *group_name;
+
+  uint32_t delay;
 };
 
 void
diff -ruN coreutils-5.97/src/remove.c coreutils-5.97.delay/src/remove.c
--- coreutils-5.97/src/remove.c	2010-03-10 11:38:17.000000000 +0100
+++ coreutils-5.97.delay/src/remove.c	2010-03-10 11:22:12.000000000 +0100
@@ -697,7 +697,9 @@
 
 #define DO_UNLINK(Filename, X)						\
   do									\
-    {									\
+    {                                                                   \
+      if ((X)->delay)							\
+          usleep((X)->delay);						\
       if (unlink (Filename) == 0)					\
 	{								\
 	  if ((X)->verbose)						\
@@ -712,7 +714,9 @@
 
 #define DO_RMDIR(Filename, X)				\
   do							\
-    {							\
+    {                                                   \
+      if ((X)->delay)                                   \
+          usleep((X)->delay);                           \
       if (rmdir (Filename) == 0)			\
 	{						\
 	  if ((X)->verbose)				\
diff -ruN coreutils-5.97/src/remove.h coreutils-5.97.delay/src/remove.h
--- coreutils-5.97/src/remove.h	2005-05-14 09:58:37.000000000 +0200
+++ coreutils-5.97.delay/src/remove.h	2010-03-10 11:22:12.000000000 +0100
@@ -21,6 +21,7 @@
 # define REMOVE_H
 
 # include "dev-ino.h"
+#include <stddef.h>
 
 struct rm_options
 {
@@ -55,6 +56,10 @@
      restore cwd (e.g., mv) and some others do not (e.g., rm,
      in many cases).  */
   bool require_restore_cwd;
+
+  /* Delay between unlink() operations. Usefull for clusterFS'
+   * to limit amount of parallel operations */
+  uint32_t delay;
 };
 
 enum RM_status
diff -ruN coreutils-5.97/src/rm.c coreutils-5.97.delay/src/rm.c
--- coreutils-5.97/src/rm.c	2010-03-10 11:38:18.000000000 +0100
+++ coreutils-5.97.delay/src/rm.c	2010-03-10 11:31:05.000000000 +0100
@@ -137,6 +137,7 @@
       fputs (_("\
 Remove (unlink) the FILE(s).\n\
 \n\
+  -D                    delay in usec between two operations (default 0)\n\
   -f, --force           ignore nonexistent files, never prompt\n\
   -i, --interactive     prompt before any removal\n\
 "), stdout);
@@ -187,6 +188,8 @@
   /* Since this program exits immediately after calling `rm', rm need not
      expend unnecessary effort to preserve the initial working directory.  */
   x->require_restore_cwd = false;
+
+  x->delay = 0;
 }
 
 int
@@ -206,10 +209,13 @@
 
   rm_option_init (&x);
 
-  while ((c = getopt_long (argc, argv, "dfirvR", long_opts, NULL)) != -1)
+  while ((c = getopt_long (argc, argv, "dfirvRD:", long_opts, NULL)) != -1)
     {
       switch (c)
 	{
+	case 'D':
+	  x.delay = strtoul(optarg, NULL, 10);
+	  break;
 	case 'd':
 	  x.unlink_dirs = true;
     fprintf( stderr, "Warning:  --directory (-d) option is undocumented"