From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65C19C433EF for ; Thu, 30 Jun 2022 20:43:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237413AbiF3Um6 (ORCPT ); Thu, 30 Jun 2022 16:42:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237313AbiF3Umw (ORCPT ); Thu, 30 Jun 2022 16:42:52 -0400 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C63CF2710 for ; Thu, 30 Jun 2022 13:42:51 -0700 (PDT) Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25UGtHe1008865 for ; Thu, 30 Jun 2022 13:42:51 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=/AoFdluhF2czs8dvlXSuREPByuhGsHBb6q128LYMYJc=; b=ibi9lGKOhhtzZuPtZnGVhjlC3gBRXS/vuGDNFHnQJAEFNLNO0ZRFldY12pIPxbk7qzpc /FCKuZeW6yBWzPg29oGTYovrN/0fpOCZ79vMWF4zLGDwrtBWQuI1E5TXn76gvzGoRMTX 0U7sjL1gJERRd13Kx+m48IDgJKd6OyizVko= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3h17gewyms-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 30 Jun 2022 13:42:50 -0700 Received: from twshared25478.08.ash9.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::d) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Thu, 30 Jun 2022 13:42:50 -0700 Received: by devbig007.nao1.facebook.com (Postfix, from userid 544533) id E1C3E5932DC0; Thu, 30 Jun 2022 13:42:30 -0700 (PDT) From: Keith Busch To: , , CC: , Kernel Team , , , , Keith Busch Subject: [PATCH 08/12] block: add bio number of vecs helper for partials Date: Thu, 30 Jun 2022 13:42:08 -0700 Message-ID: <20220630204212.1265638-9-kbusch@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220630204212.1265638-1-kbusch@fb.com> References: <20220630204212.1265638-1-kbusch@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: ef314TpclO3i7wtmXNK_66nuLIUxGfl1 X-Proofpoint-GUID: ef314TpclO3i7wtmXNK_66nuLIUxGfl1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-06-30_14,2022-06-28_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Keith Busch Bit buckets get their own vector, so need to allocate enough to hold both the preregistered bvecs and the bit buckets. Signed-off-by: Keith Busch --- include/linux/bio.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/bio.h b/include/linux/bio.h index 992ee987f273..ded38accf009 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -452,6 +452,17 @@ static inline int bio_iov_vecs_to_alloc(struct iov_i= ter *iter, int max_segs) return iov_iter_npages(iter, max_segs); } =20 +static inline int bio_iov_vecs_to_alloc_partial(struct iov_iter *iter, + int max_segs, bool trunc, + bool skip) +{ + if (skip || trunc) + return min(iov_iter_npages(iter, max_segs) + skip + trunc, + max_segs); + else + return bio_iov_vecs_to_alloc(iter, max_segs); +} + struct request_queue; =20 extern int submit_bio_wait(struct bio *bio); --=20 2.30.2