From nobody Sat Feb 7 05:48:58 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; dkim=fail spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1491058112006660.674790036188; Sat, 1 Apr 2017 07:48:32 -0700 (PDT) Received: from localhost ([::1]:51700 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cuKKM-0000di-Qe for importer@patchew.org; Sat, 01 Apr 2017 10:48:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40620) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cuKGd-00066y-KH for qemu-devel@nongnu.org; Sat, 01 Apr 2017 10:44:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cuKGc-000448-Ol for qemu-devel@nongnu.org; Sat, 01 Apr 2017 10:44:39 -0400 Received: from mail-pf0-x242.google.com ([2607:f8b0:400e:c00::242]:34726) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cuKGc-00043n-JW; Sat, 01 Apr 2017 10:44:38 -0400 Received: by mail-pf0-x242.google.com with SMTP id o126so4243862pfb.1; Sat, 01 Apr 2017 07:44:38 -0700 (PDT) Received: from linux.local ([27.251.197.196]) by smtp.gmail.com with ESMTPSA id h14sm9618461pgn.64.2017.04.01.07.44.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 01 Apr 2017 07:44:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lY72x0MPqywAOJgpjEJBmkhKmQAY3I2IM26F2Jh4iT0=; b=HPYRuDwAchGf3y+uoX5V9sTl5fRirOXrIJcdlEP67oQrGnp40tgtTR1qn6s94MLdLD /ujwBITujhuQvdOE7eOot11igOTtxZsj2BwUrRuFwQKpbGnYbqUkt4OHA0nEfdOMFTHR o/7xI4iue/VV9XtPxuvamA2n/KAp0+RDMoaFB1S8ryO0+tMfOZgSmaucNQLCcA+i5J1U F3SY/d7Q9fCPnKu/I7fzNjPtVMuWNv9k3KXBBuH7eiYvjWEr03bHktgE3m3FsaDcppg1 hDJxj2MlXBQlf+PvHIZSUtb4jwuEA2TXKaNAvfxLTPRjGQAvUhiT27YzUy8sL7TJ0c/T L+zQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=lY72x0MPqywAOJgpjEJBmkhKmQAY3I2IM26F2Jh4iT0=; b=m/lsonU/4IoeGaDfHkbdxnw/hUB8EM7XCdh0mCa50jbVp1Ih5gVx11LjnIvUochVzo GUevP9e03/OW+FCEijlebHPr9F881MVkJ3xxuZMlW6g/eUIfK4qm6ECot2+5qFde3PA0 exozHATfnLUhskEOm2hDDaZZRFQ3WVgjYNkrZpqhoYhOhN6SveVC0iqJR60FU2PUBvUY ats7ehXwolNWOqY0aSDmp62+l90wPmSVbYf0m9CMgd7s8PL3tEGaLSOk9luwc8FVQiRH Uik3eYTQKIOKQZSSKAwNLRWUiwrWaHYMieUKs8ZqWjQMIuqONptvtBhXUI/MYVWrVcCb zdOA== X-Gm-Message-State: AFeK/H04zDcM1RUzL8cESoSnZ6xc3AGQmWguuj2DuvoPYnZRWECh+9VLl77iStXnv7gG1Q== X-Received: by 10.98.138.193 with SMTP id o62mr7283997pfk.230.1491057877648; Sat, 01 Apr 2017 07:44:37 -0700 (PDT) From: Ashijeet Acharya To: famz@redhat.com Date: Sat, 1 Apr 2017 20:14:37 +0530 Message-Id: <1491057878-27868-6-git-send-email-ashijeetacharya@gmail.com> X-Mailer: git-send-email 2.6.2 In-Reply-To: <1491057878-27868-1-git-send-email-ashijeetacharya@gmail.com> References: <1491057878-27868-1-git-send-email-ashijeetacharya@gmail.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2607:f8b0:400e:c00::242 Subject: [Qemu-devel] [PATCH v3 5/6] vmdk: Set maximum bytes allocated in one cycle X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-block@nongnu.org, stefanha@gmail.com, qemu-devel@nongnu.org, mreitz@redhat.com, Ashijeet Acharya , jsnow@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Set the maximum bytes allowed to get allocated at once to be not more than the extent size boundary to handle writes at two separate extents appropriately. Signed-off-by: Ashijeet Acharya --- block/vmdk.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/block/vmdk.c b/block/vmdk.c index a8babd7..9456ddd 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1767,6 +1767,7 @@ static int vmdk_pwritev(BlockDriverState *bs, uint64_= t offset, int64_t offset_in_cluster, n_bytes; uint64_t cluster_offset; uint64_t bytes_done =3D 0; + uint64_t extent_size; VmdkMetaData m_data; uint32_t total_alloc_clusters =3D 0; =20 @@ -1782,9 +1783,17 @@ static int vmdk_pwritev(BlockDriverState *bs, uint64= _t offset, if (!extent) { return -EIO; } + extent_size =3D extent->end_sector * BDRV_SECTOR_SIZE; + offset_in_cluster =3D vmdk_find_offset_in_cluster(extent, offset); - n_bytes =3D MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE - - offset_in_cluster); + + /* truncate n_bytes to first cluster because we need to perform CO= W */ + if (offset_in_cluster > 0) { + n_bytes =3D MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_S= IZE + - offset_in_cluster); + } else { + n_bytes =3D MIN(bytes, extent_size - offset); + } =20 ret =3D vmdk_alloc_cluster_offset(bs, extent, &m_data, offset, !(extent->compressed || zeroed), --=20 2.6.2