From patchwork Thu Aug 17 12:50:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 13356389 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 BDF44C2FC14 for ; Thu, 17 Aug 2023 12:51:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qWcTF-0008E9-Cd; Thu, 17 Aug 2023 08:51:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWcSx-0007qn-7h for qemu-devel@nongnu.org; Thu, 17 Aug 2023 08:51:13 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWcSp-0002aZ-BZ for qemu-devel@nongnu.org; Thu, 17 Aug 2023 08:51:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1692276658; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=s9Q4KfHn3HSt2gTl2f2cGyCa4/oK4nyK6I0AQR5Sn/o=; b=ZtmJkgPVFko+CfpGoa9qRmTzekYGqY036L5Of93tInpaMMyCxg4FPYWfQ3creUou4EVPdq IYh0VFa01Ce2LoPnWn+4STu4hxYnwJ+lNwgB4h6Fkez/r7CGp3pGBeMPBgSpl2aJCUnXL8 GjQpdVLuTnvsaA0MF614dJapXpENWEc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-283-wKh1zy8FNJikitNdiy4JLg-1; Thu, 17 Aug 2023 08:50:55 -0400 X-MC-Unique: wKh1zy8FNJikitNdiy4JLg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0AF70101A52E; Thu, 17 Aug 2023 12:50:55 +0000 (UTC) Received: from merkur.redhat.com (unknown [10.39.194.106]) by smtp.corp.redhat.com (Postfix) with ESMTP id D41081121314; Thu, 17 Aug 2023 12:50:53 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, eblake@redhat.com, eesposit@redhat.com, pbonzini@redhat.com, vsementsov@yandex-team.ru, qemu-devel@nongnu.org Subject: [PATCH 02/21] preallocate: Factor out preallocate_truncate_to_real_size() Date: Thu, 17 Aug 2023 14:50:01 +0200 Message-ID: <20230817125020.208339-3-kwolf@redhat.com> In-Reply-To: <20230817125020.208339-1-kwolf@redhat.com> References: <20230817125020.208339-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.021, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org It's essentially the same code in preallocate_check_perm() and preallocate_close(), except that the latter ignores errors. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi --- block/preallocate.c | 48 +++++++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 26 deletions(-) diff --git a/block/preallocate.c b/block/preallocate.c index 4d82125036..3259c51c1b 100644 --- a/block/preallocate.c +++ b/block/preallocate.c @@ -162,26 +162,39 @@ static int preallocate_open(BlockDriverState *bs, QDict *options, int flags, return 0; } -static void preallocate_close(BlockDriverState *bs) +static int preallocate_truncate_to_real_size(BlockDriverState *bs, Error **errp) { - int ret; BDRVPreallocateState *s = bs->opaque; - - if (s->data_end < 0) { - return; - } + int ret; if (s->file_end < 0) { s->file_end = bdrv_getlength(bs->file->bs); if (s->file_end < 0) { - return; + error_setg_errno(errp, -s->file_end, "Failed to get file length"); + return s->file_end; } } if (s->data_end < s->file_end) { ret = bdrv_truncate(bs->file, s->data_end, true, PREALLOC_MODE_OFF, 0, NULL); - s->file_end = ret < 0 ? ret : s->data_end; + if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to drop preallocation"); + s->file_end = ret; + return ret; + } + s->file_end = s->data_end; + } + + return 0; +} + +static void preallocate_close(BlockDriverState *bs) +{ + BDRVPreallocateState *s = bs->opaque; + + if (s->data_end >= 0) { + preallocate_truncate_to_real_size(bs, NULL); } } @@ -473,24 +486,7 @@ static int preallocate_check_perm(BlockDriverState *bs, * We should truncate in check_perm, as in set_perm bs->file->perm will * be already changed, and we should not violate it. */ - if (s->file_end < 0) { - s->file_end = bdrv_getlength(bs->file->bs); - if (s->file_end < 0) { - error_setg(errp, "Failed to get file length"); - return s->file_end; - } - } - - if (s->data_end < s->file_end) { - int ret = bdrv_truncate(bs->file, s->data_end, true, - PREALLOC_MODE_OFF, 0, NULL); - if (ret < 0) { - error_setg(errp, "Failed to drop preallocation"); - s->file_end = ret; - return ret; - } - s->file_end = s->data_end; - } + return preallocate_truncate_to_real_size(bs, errp); } return 0;