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staging/lustre/ldlm: In ldlm_pools_fini make sure there was init first.

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It turns out if you call ldlm_pools_fini without completing the
ldlm_pools_init, then attempt to unregister not yet registered
shrinkers makes the kernel very unhappy.
So make sure we have them registered first.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin
2015-07-06 12:48:41 -04:00
committed by Greg Kroah-Hartman
parent 6a491f2b80
commit faa7a4e3e0
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
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@@ -1486,8 +1486,10 @@ EXPORT_SYMBOL(ldlm_pools_init);
void ldlm_pools_fini(void)
{
unregister_shrinker(&ldlm_pools_srv_shrinker);
unregister_shrinker(&ldlm_pools_cli_shrinker);
if (ldlm_pools_thread) {
unregister_shrinker(&ldlm_pools_srv_shrinker);
unregister_shrinker(&ldlm_pools_cli_shrinker);
}
ldlm_pools_thread_stop();
}
EXPORT_SYMBOL(ldlm_pools_fini);