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dkim=pass header.d=google.com header.s=20210112 header.b=X41D9Z1M; spf=pass (imf20.hostedemail.com: domain of shakeelb@google.com designates 209.85.216.41 as permitted sender) smtp.mailfrom=shakeelb@google.com; dmarc=pass (policy=reject) header.from=google.com X-HE-Tag: 1654796867-727547 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Jun 9, 2022 at 10:27 AM Roman Gushchin wrote: > [...] > +struct mem_cgroup *mem_cgroup_from_obj(void *p) > +{ > + struct folio *folio; > + > + if (mem_cgroup_disabled()) > + return NULL; > + > + if (unlikely(is_vmalloc_addr(p))) > + folio = page_folio(vmalloc_to_page(p)); Do we need to check for NULL from vmalloc_to_page(p)? > + else > + folio = virt_to_folio(p); > + > + return mem_cgroup_from_obj_folio(folio, p); > +}