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Mon, 19 Aug 2019 13:00:59 GMT Received: from g2t2353.austin.hpe.com (g2t2353.austin.hpe.com [15.233.44.26]) by mx0b-002e3701.pphosted.com with ESMTP id 2ufstss48m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 19 Aug 2019 13:00:59 +0000 Received: from g2t2360.austin.hpecorp.net (g2t2360.austin.hpecorp.net [16.196.225.135]) by g2t2353.austin.hpe.com (Postfix) with ESMTP id 703C496; Mon, 19 Aug 2019 13:00:58 +0000 (UTC) Received: from hpe.com (teo-eag.americas.hpqcorp.net [10.33.152.10]) by g2t2360.austin.hpecorp.net (Postfix) with ESMTP id 660EF39; Mon, 19 Aug 2019 13:00:57 +0000 (UTC) Date: Mon, 19 Aug 2019 08:00:57 -0500 From: Dimitri Sivanich To: Bharath Vedartham Cc: sivanich@hpe.com, jhubbard@nvidia.com, jglisse@redhat.com, ira.weiny@intel.com, gregkh@linuxfoundation.org, arnd@arndb.de, william.kucharski@oracle.com, hch@lst.de, linux-mm@kvack.org, linux-kernel-mentees@lists.linuxfoundation.org, linux-kernel@vger.kernel.org Subject: Re: [Linux-kernel-mentees][PATCH 2/2] sgi-gru: Remove uneccessary ifdef for CONFIG_HUGETLB_PAGE Message-ID: <20190819130057.GC5808@hpe.com> References: <1566157135-9423-1-git-send-email-linux.bhar@gmail.com> <1566157135-9423-3-git-send-email-linux.bhar@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <1566157135-9423-3-git-send-email-linux.bhar@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-08-19_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908190148 Content-Transfer-Encoding: quoted-printable 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: Reviewed-by: Dimitri Sivanich On Mon, Aug 19, 2019 at 01:08:55AM +0530, Bharath Vedartham wrote: > is_vm_hugetlb_page will always return false if CONFIG_HUGETLB_PAGE is > not set. >=20 > Cc: Ira Weiny > Cc: John Hubbard > Cc: J=E9r=F4me Glisse > Cc: Greg Kroah-Hartman > Cc: Dimitri Sivanich > Cc: Arnd Bergmann > Cc: William Kucharski > Cc: Christoph Hellwig > Cc: linux-kernel@vger.kernel.org > Cc: linux-mm@kvack.org > Cc: linux-kernel-mentees@lists.linuxfoundation.org > Reviewed-by: Ira Weiny > Reviewed-by: John Hubbard > Reviewed-by: William Kucharski > Signed-off-by: Bharath Vedartham > --- > drivers/misc/sgi-gru/grufault.c | 21 +++++++++++---------- > 1 file changed, 11 insertions(+), 10 deletions(-) >=20 > diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/gru= fault.c > index 61b3447..bce47af 100644 > --- a/drivers/misc/sgi-gru/grufault.c > +++ b/drivers/misc/sgi-gru/grufault.c > @@ -180,11 +180,11 @@ static int non_atomic_pte_lookup(struct vm_area_s= truct *vma, > { > struct page *page; > =20 > -#ifdef CONFIG_HUGETLB_PAGE > - *pageshift =3D is_vm_hugetlb_page(vma) ? HPAGE_SHIFT : PAGE_SHIFT; > -#else > - *pageshift =3D PAGE_SHIFT; > -#endif > + if (unlikely(is_vm_hugetlb_page(vma))) > + *pageshift =3D HPAGE_SHIFT; > + else > + *pageshift =3D PAGE_SHIFT; > + > if (get_user_pages(vaddr, 1, write ? FOLL_WRITE : 0, &page, NULL) <=3D= 0) > return -EFAULT; > *paddr =3D page_to_phys(page); > @@ -238,11 +238,12 @@ static int atomic_pte_lookup(struct vm_area_struc= t *vma, unsigned long vaddr, > return 1; > =20 > *paddr =3D pte_pfn(pte) << PAGE_SHIFT; > -#ifdef CONFIG_HUGETLB_PAGE > - *pageshift =3D is_vm_hugetlb_page(vma) ? HPAGE_SHIFT : PAGE_SHIFT; > -#else > - *pageshift =3D PAGE_SHIFT; > -#endif > + > + if (unlikely(is_vm_hugetlb_page(vma))) > + *pageshift =3D HPAGE_SHIFT; > + else > + *pageshift =3D PAGE_SHIFT; > + > return 0; > =20 > err: > --=20 > 2.7.4 >=20