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Fri, 7 Aug 2020 12:55:53 +0000 (UTC) Received: from localhost (ovpn-12-31.pek2.redhat.com [10.72.12.31]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2EF565DA33; Fri, 7 Aug 2020 12:55:52 +0000 (UTC) Date: Fri, 7 Aug 2020 20:55:50 +0800 From: Baoquan He To: Wei Yang Cc: mike.kravetz@oracle.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 05/10] mm/hugetlb: remove the redundant check on non_swap_entry() Message-ID: <20200807125550.GP14854@MiWiFi-R3L-srv> References: <20200807091251.12129-1-richard.weiyang@linux.alibaba.com> <20200807091251.12129-6-richard.weiyang@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200807091251.12129-6-richard.weiyang@linux.alibaba.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Rspamd-Queue-Id: 4E3CB18038E67 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 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 08/07/20 at 05:12pm, Wei Yang wrote: > Migration and hwpoison entry is a subset of non_swap_entry(). > > Remove the redundant check on non_swap_entry(). > > Signed-off-by: Wei Yang Hmm, I have posted one patch to do the same thing, got reivewed by people. https://lore.kernel.org/linux-mm/20200723104636.GS32539@MiWiFi-R3L-srv/ > --- > mm/hugetlb.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/hugetlb.c b/mm/hugetlb.c > index d775e514eb2e..f5f04e89000d 100644 > --- a/mm/hugetlb.c > +++ b/mm/hugetlb.c > @@ -3778,7 +3778,7 @@ bool is_hugetlb_entry_migration(pte_t pte) > if (huge_pte_none(pte) || pte_present(pte)) > return false; > swp = pte_to_swp_entry(pte); > - if (non_swap_entry(swp) && is_migration_entry(swp)) > + if (is_migration_entry(swp)) > return true; > else > return false; > @@ -3791,7 +3791,7 @@ static int is_hugetlb_entry_hwpoisoned(pte_t pte) > if (huge_pte_none(pte) || pte_present(pte)) > return 0; > swp = pte_to_swp_entry(pte); > - if (non_swap_entry(swp) && is_hwpoison_entry(swp)) > + if (is_hwpoison_entry(swp)) > return 1; > else > return 0; > -- > 2.20.1 (Apple Git-117) > >