--- src/cmd/ksh93/sh/jobs.c
+++ src/cmd/ksh93/sh/jobs.c	Tue Aug 28 12:58:29 2007
@@ -43,6 +43,8 @@
 #   define WIFCONTINUED(wstat)	(0)
 #endif
 
+#define	NJOB_SAVELIST	4
+
 /*
  * temporary hack to get W* macros to work
  */
@@ -59,13 +61,35 @@
 	unsigned short	exitval;
 };
 
+static struct jobsave *job_savelist;
+static int njob_savelist;
+
+static void init_savelist(void)
+{
+	register struct jobsave *jp;
+	while(njob_savelist < NJOB_SAVELIST)
+	{
+		jp = newof(0,struct jobsave,1,0);
+		jp->next = job_savelist;
+		job_savelist = jp;
+		njob_savelist++;
+	}
+}
+
 /*
  * return next on link list of jobsave free list
  */
 static struct jobsave *jobsave_create(pid_t pid)
 {
-	struct jobsave *jp;
-	if(jp = newof(0,struct jobsave,1,0))
+	register struct jobsave *jp = job_savelist;
+	if(jp)
+	{
+		njob_savelist--;
+		job_savelist = jp->next;
+	}
+	else
+		jp = newof(0,struct jobsave,1,0);
+	if(jp)
 		jp->pid = pid;
 	return(jp);
 }
@@ -371,6 +395,8 @@
 #   if defined(SIGCLD) && (SIGCLD!=SIGCHLD)
 	signal(SIGCLD,job_waitsafe);
 #   endif
+	if(njob_savelist < NJOB_SAVELIST)
+		init_savelist();
 	if(!sh_isoption(SH_INTERACTIVE))
 		return;
 	/* use new line discipline when available */
@@ -993,6 +1019,8 @@
 		free((void*)jp);
 	}
 	bck.list = 0;
+	if(njob_savelist < NJOB_SAVELIST)
+		init_savelist();
 	job.pwlist = NIL(struct process*);
 	job.numpost=0;
 	job.waitall = 0;
@@ -1015,6 +1043,8 @@
 	register struct process *pw;
 	register History_t *hp = sh.hist_ptr;
 	sh.jobenv = sh.curenv;
+	if(njob_savelist < NJOB_SAVELIST)
+		init_savelist();
 	if(job.toclear)
 	{
 		job_clear();
@@ -1273,7 +1303,13 @@
 							px->p_flag &= ~P_EXITSAVE;
 					}
 				}
-				if(!(px=job_unpost(pw,1)) || !job.waitall) 
+				if(!job.waitall)
+				{
+					if(!sh_isoption(SH_PIPEFAIL))
+						job_unpost(pw,1);
+					break;
+				}
+				else if(!(px=job_unpost(pw,1)))
 					break;
 				pw = px;
 				continue;
@@ -1312,6 +1348,8 @@
 	else
 		tty_set(-1, 0, NIL(struct termios*));
 done:
+	if(!job.waitall && sh_isoption(SH_PIPEFAIL))
+		return;
 	if(!sh.intrap)
 	{
 		job_lock();
@@ -1593,7 +1631,14 @@
 		else
 			bck.list = jp->next;
 		bck.count--;
-		free((void*)jp);
+		if(njob_savelist < NJOB_SAVELIST)
+		{
+			njob_savelist++;
+			jp->next = job_savelist;
+			job_savelist = jp;
+		}
+		else
+			free((void*)jp);
 	}
 	return(r);
 }