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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15814C433E6 for ; Tue, 1 Sep 2020 14:43:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CEC752176B for ; Tue, 1 Sep 2020 14:43:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ffJ52rQa" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEC752176B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49644 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kD7Uy-0006Te-Up for qemu-devel@archiver.kernel.org; Tue, 01 Sep 2020 10:43:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33954) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kD7ND-0007wU-0X for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:34:59 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:50171 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kD7NB-00077U-HD for qemu-devel@nongnu.org; Tue, 01 Sep 2020 10:34:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598970896; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7+eXjCZTMHHxoPLz+HDrgIdDMcjZ0hOTm+j/NTbG2aA=; b=ffJ52rQa6iqalURUYNFjkhLAZG3nqzOyhQwXAhSaKfCY/4B6VNqi3o6atPluLGlGm/zfZi B2csRyFZz/x1YZ/NuiouoKMVQLLY2LitAlVM/0khQd82/mzgJ4+CC3lt9IWCOFh3YxqQVd UqiCjhxRsDFaX85NTLDNAlKvDsh69Ek= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-493-hvxLZMrsPq2gUEMJdSg23g-1; Tue, 01 Sep 2020 10:34:53 -0400 X-MC-Unique: hvxLZMrsPq2gUEMJdSg23g-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EB29964081; Tue, 1 Sep 2020 14:34:51 +0000 (UTC) Received: from localhost (ovpn-113-83.ams2.redhat.com [10.36.113.83]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 85C311002D5A; Tue, 1 Sep 2020 14:34:51 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH v8 11/43] block: Use CAFs in block status functions Date: Tue, 1 Sep 2020 16:33:52 +0200 Message-Id: <20200901143424.884735-12-mreitz@redhat.com> In-Reply-To: <20200901143424.884735-1-mreitz@redhat.com> References: <20200901143424.884735-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/01 02:08:15 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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=-0.001, 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_H2=-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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Andrey Shinkevich , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Use the child access functions in the block status inquiry functions as appropriate. Signed-off-by: Max Reitz --- block/io.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/block/io.c b/block/io.c index 01e3477a77..4ee8fe5465 100644 --- a/block/io.c +++ b/block/io.c @@ -2409,9 +2409,10 @@ static int coroutine_fn bdrv_co_block_status(BlockDriverState *bs, if (ret & (BDRV_BLOCK_DATA | BDRV_BLOCK_ZERO)) { ret |= BDRV_BLOCK_ALLOCATED; } else if (want_zero && bs->drv->supports_backing) { - if (bs->backing) { - BlockDriverState *bs2 = bs->backing->bs; - int64_t size2 = bdrv_getlength(bs2); + BlockDriverState *cow_bs = bdrv_cow_bs(bs); + + if (cow_bs) { + int64_t size2 = bdrv_getlength(cow_bs); if (size2 >= 0 && offset >= size2) { ret |= BDRV_BLOCK_ZERO; @@ -2479,7 +2480,7 @@ static int coroutine_fn bdrv_co_block_status_above(BlockDriverState *bs, bool first = true; assert(bs != base); - for (p = bs; p != base; p = backing_bs(p)) { + for (p = bs; p != base; p = bdrv_filter_or_cow_bs(p)) { ret = bdrv_co_block_status(p, want_zero, offset, bytes, pnum, map, file); if (ret < 0) { @@ -2553,7 +2554,7 @@ int bdrv_block_status_above(BlockDriverState *bs, BlockDriverState *base, int bdrv_block_status(BlockDriverState *bs, int64_t offset, int64_t bytes, int64_t *pnum, int64_t *map, BlockDriverState **file) { - return bdrv_block_status_above(bs, backing_bs(bs), + return bdrv_block_status_above(bs, bdrv_filter_or_cow_bs(bs), offset, bytes, pnum, map, file); } @@ -2563,9 +2564,9 @@ int coroutine_fn bdrv_is_allocated(BlockDriverState *bs, int64_t offset, int ret; int64_t dummy; - ret = bdrv_common_block_status_above(bs, backing_bs(bs), false, offset, - bytes, pnum ? pnum : &dummy, NULL, - NULL); + ret = bdrv_common_block_status_above(bs, bdrv_filter_or_cow_bs(bs), false, + offset, bytes, pnum ? pnum : &dummy, + NULL, NULL); if (ret < 0) { return ret; } @@ -2628,7 +2629,7 @@ int bdrv_is_allocated_above(BlockDriverState *top, break; } - intermediate = backing_bs(intermediate); + intermediate = bdrv_filter_or_cow_bs(intermediate); } *pnum = n; -- 2.26.2