From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Tue, 28 Mar 2006 22:50:58 +0000 (-0800)
Subject: [SCSI] for_each_possible_cpu: scsi
X-Git-Tag: v2.6.17-rc2~30^2~18
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=530bba6fa898318fbf111d91402d49b1c538e3cd;p=linux-2.6

[SCSI] for_each_possible_cpu: scsi

for_each_cpu() actually iterates across all possible CPUs.  We've had mistakes
in the past where people were using for_each_cpu() where they should have been
iterating across only online or present CPUs.  This is inefficient and
possibly buggy.

We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the
future.

This patch replaces for_each_cpu with for_each_possible_cpu.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 6913b06231..32979fee61 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1243,7 +1243,7 @@ static int __init init_scsi(void)
 	if (error)
 		goto cleanup_sysctl;
 
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		INIT_LIST_HEAD(&per_cpu(scsi_done_q, i));
 
 	printk(KERN_NOTICE "SCSI subsystem initialized\n");