[PATCH] was: [RFC] removal of sync in panic

[Christian Borntraeger <linux-kernel@borntraeger.net>]

Lars Marowsky-Bree wrote:
> > 1. remove sys_sync completely: syslogd and klogd use fsync. No need to
> > help them. Furthermore we have a severe problem which is worth a panic,
> > so we better dont do any I/O.

> I've seen exactly the behaviour you describe and would be inclined to go
> for this option too.

As this problem definitely exists, here is a patch. 

--- linux-2.6.8-rc1/kernel/panic.c      2004-06-16 07:20:04.000000000 +0200
+++ linux-patch/kernel/panic.c  2004-07-14 19:37:02.000000000 +0200
@@ -59,13 +59,7 @@ NORET_TYPE void panic(const char * fmt,
        va_start(args, fmt);
        vsnprintf(buf, sizeof(buf), fmt, args);
        va_end(args);
-       printk(KERN_EMERG "Kernel panic: %s\n",buf);
-       if (in_interrupt())
-               printk(KERN_EMERG "In interrupt handler - not syncing\n");
-       else if (!current->pid)
-               printk(KERN_EMERG "In idle task - not syncing\n");
-       else
-               sys_sync();
+       printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf);
        bust_spinlocks(0);

 #ifdef CONFIG_SMP