PID of multi-threaded core's file name is wrong in 2.5.59

[MAEDA Naoaki <maeda.naoaki@jp.fujitsu.com>]

Hi,

I found sometimes pid of muitl-threaded core's file name shows
wrong number in 2.5.59 with NPTL-0.17. Problem is, pid of core file
name comes from currnet->pid, but I think it should be current->tgid.

Following patch fixes this problem.

MAEDA Naoaki

diff -Naur linux-2.5.59/fs/exec.c linux-2.5.59-corepidfix/fs/exec.c
--- linux-2.5.59/fs/exec.c	2003-01-17 11:22:02.000000000 +0900
+++ linux-2.5.59-corepidfix/fs/exec.c	2003-01-25 13:20:50.000000000 +0900
@@ -1166,7 +1166,7 @@
 			case 'p':
 				pid_in_pattern = 1;
 				rc = snprintf(out_ptr, out_end - out_ptr,
-					      "%d", current->pid);
+					      "%d", current->tgid);
 				if (rc > out_end - out_ptr)
 					goto out;
 				out_ptr += rc;
@@ -1238,7 +1238,7 @@
 	if (!pid_in_pattern
             && (core_uses_pid || atomic_read(&current->mm->mm_users) != 1)) {
 		rc = snprintf(out_ptr, out_end - out_ptr,
-			      ".%d", current->pid);
+			      ".%d", current->tgid);
 		if (rc > out_end - out_ptr)
 			goto out;
 		out_ptr += rc;