mm/page_counter: remove an incorrect call to propagate_protected_usage()
propagate_protected_usage() is called to propagate the usage change in the page_counter structure. But there is a call to this function from page_counter_try_charge() when there is actually no usage change. Hence this call should be removed. Link: https://lkml.kernel.org/r/20211118181125.3918222-1-dqiao@redhat.com Signed-off-by: Donghai Qiao <dqiao@redhat.com> Reviewed-by: Roman Gushchin <guro@fb.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -120,7 +120,6 @@ bool page_counter_try_charge(struct page_counter *counter,
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new = atomic_long_add_return(nr_pages, &c->usage);
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if (new > c->max) {
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atomic_long_sub(nr_pages, &c->usage);
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propagate_protected_usage(c, new);
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/*
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* This is racy, but we can live with some
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* inaccuracy in the failcnt which is only used
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