Commit 1d034e68 authored Mar 16, 2016 by Anna-Maria Gleixner Committed by Shaohua Li Mar 17, 2016

md/raid5: Cleanup cpu hotplug notifier



The raid456_cpu_notify() hotplug callback lacks handling of the
CPU_UP_CANCELED case. That means if CPU_UP_PREPARE fails, the scratch
buffer is leaked.

Add handling for CPU_UP_CANCELED[_FROZEN] hotplug notifier transitions
to free the scratch buffer.

CC: Shaohua Li <shli@kernel.org>
CC: linux-raid@vger.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Shaohua Li <shli@fb.com>

parent 23ddba80

drivers/md/raid5.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -6381,6 +6381,8 @@ static int raid456_cpu_notify(struct notifier_block *nfb, unsigned long action,
		break;
		case CPU_DEAD:
		case CPU_DEAD_FROZEN:
		case CPU_UP_CANCELED:
		case CPU_UP_CANCELED_FROZEN:
		free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu));
		break;
		default:

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