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SubjectRe: [PATCH] mm/zswap: unregister zswap_cpu_notifier_block in cleanup procedure
On Sun, Nov 09, 2014 at 07:22:23PM +0800, Mahendran Ganesh wrote:
> In zswap_cpu_init(), the code does not unregister *zswap_cpu_notifier_block*
> during the cleanup procedure.

This is not needed. If we are in the cleanup code, we never got to the
__register_cpu_notifier() call.

Thanks,
Seth

>
> This patch fix this issue.
>
> Signed-off-by: Mahendran Ganesh <opensource.ganesh@gmail.com>
> ---
> mm/zswap.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/zswap.c b/mm/zswap.c
> index ea064c1..51a2c45 100644
> --- a/mm/zswap.c
> +++ b/mm/zswap.c
> @@ -404,6 +404,7 @@ static int zswap_cpu_init(void)
> cleanup:
> for_each_online_cpu(cpu)
> __zswap_cpu_notifier(CPU_UP_CANCELED, cpu);
> + __unregister_cpu_notifier(&zswap_cpu_notifier_block);
> cpu_notifier_register_done();
> return -ENOMEM;
> }
> --
> 1.7.9.5
>


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