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    SubjectRe: [-mm PATCH 4/9] Memory controller memory accounting (v4)
    Date
    From
    > +	lock_meta_page(page);
    > + /*
    > + * Check if somebody else beat us to allocating the meta_page
    > + */
    > + race_mp = page_get_meta_page(page);
    > + if (race_mp) {
    > + kfree(mp);
    > + mp = race_mp;
    > + atomic_inc(&mp->ref_cnt);
    > + res_counter_uncharge(&mem->res, 1);
    > + goto done;
    > + }

    i think you need css_put here.

    YAMAMOTO Takashi
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