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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DFE82C43334 for ; Thu, 30 Jun 2022 20:44:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/AoFdluhF2czs8dvlXSuREPByuhGsHBb6q128LYMYJc=; b=bIQb0Xa9uCpVJGNuvMUw8GlXjo w0tjW1fKcoKutcaMA+1Fw4lVz1iv4vfykSttdpi8mQQnMolDagMGgps8fMkm/Umo8h3jviQIBtYR/ 1m3fBJ3mulkgvFdEEDzd/7N8tT6Cw9O3OrhlSfTGB6B0uc6SWarrKZkyMykSKPqOVADF/J8z/bYaJ ZxM/M9h7ywwQ6H2OA158xaMPq4gdFZRgPJOoSKD3EAnqtU/IYMFNaslDWGqR9ZABBwE94YGtWXa3i 1DnGX86l6JYfWPKvb6clKF9D3yrbIWsdKj30smIBXjQnkYi3sckwqMVwZkH0cs2d721n5QX4dgexB Js0HkCqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o7111-001TcI-SC; Thu, 30 Jun 2022 20:43:55 +0000 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o7100-001T34-An for linux-nvme@lists.infradead.org; Thu, 30 Jun 2022 20:42:54 +0000 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25UGL9RJ032574 for ; Thu, 30 Jun 2022 13:42:52 -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 3h12ug6g05-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 30 Jun 2022 13:42:51 -0700 Received: from twshared25478.08.ash9.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) 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-GUID: Kv43ED-MgGAVqrSdHkW_m2lHsMmp_Eor X-Proofpoint-ORIG-GUID: Kv43ED-MgGAVqrSdHkW_m2lHsMmp_Eor 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220630_134252_449088_7C66301E X-CRM114-Status: GOOD ( 15.01 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.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