mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()
We got need_resched() warnings in swap_cgroup_swapoff() because swap_cgroup_ctrl[type].length is particularly large. Reschedule when needed. Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1704061315270.80559@chino.kir.corp.google.com Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -201,6 +201,8 @@ void swap_cgroup_swapoff(int type)
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struct page *page = map[i];
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if (page)
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__free_page(page);
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if (!(i % SWAP_CLUSTER_MAX))
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cond_resched();
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}
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vfree(map);
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}
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