[PATCH] deprecate use of bdflush()

[Robert Love <rml@tech9.net>]

We can never get rid of it if we do not deprecate it - so do so and
print a stern warning to those who still run bdflush daemons.

Patch is against 2.5.49-mm2.  Please apply.

	Robert Love


 fs/buffer.c |    6 ++++++
 1 files changed, 6 insertions(+)


diff -urN linux-2.5.49-mm2/fs/buffer.c linux/fs/buffer.c
--- linux-2.5.49-mm2/fs/buffer.c	2002-12-02 16:07:53.000000000 -0500
+++ linux/fs/buffer.c	2002-12-02 16:17:16.000000000 -0500
@@ -2757,11 +2757,17 @@
 /*
  * There are no bdflush tunables left.  But distributions are
  * still running obsolete flush daemons, so we terminate them here.
+ *
+ * Use of bdflush() is deprecated and will be removed in a future kernel.
+ * The `pdflush' kernel threads fully replace bdflush daemons and this call.
  */
 asmlinkage long sys_bdflush(int func, long data)
 {
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
+
+	printk(KERN_WARNING "warning: the bdflush system call is deprecated "
+			 "and no longer needed.  Stop using it.\n");
 	if (func == 1)
 		do_exit(0);
 	return 0;