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Shutemov" To: Lucian Adrian Grijincu Cc: linux-mm@kvack.org, Souptick Joarder , linux-kernel@vger.kernel.org, Michal Hocko , Andrew Morton , Rik van Riel , Roman Gushchin Subject: Re: [PATCH v3] mm: memory: fix /proc/meminfo reporting for MLOCK_ONFAULT Message-ID: <20190917113758.kfcbagaz7nlbqnco@box> References: <20190913211119.416168-1-lucian@fb.com> <20190916152619.vbi3chozlrzdiuqy@box> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190916152619.vbi3chozlrzdiuqy@box> User-Agent: NeoMutt/20180716 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 Mon, Sep 16, 2019 at 06:26:19PM +0300, Kirill A. Shutemov wrote: > > --- > > mm/memory.c | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/mm/memory.c b/mm/memory.c > > index e0c232fe81d9..55da24f33bc4 100644 > > --- a/mm/memory.c > > +++ b/mm/memory.c > > @@ -3311,6 +3311,8 @@ vm_fault_t alloc_set_pte(struct vm_fault *vmf, struct mem_cgroup *memcg, > > } else { > > inc_mm_counter_fast(vma->vm_mm, mm_counter_file(page)); > > page_add_file_rmap(page, false); > > + if (vma->vm_flags & VM_LOCKED && !PageTransCompound(page)) > > + mlock_vma_page(page); > > Why do you only do this for file pages? Because file pages are locked already, right? -- Kirill A. Shutemov