From nobody Mon May 12 13:28:16 2025 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1695283164; cv=none; d=zohomail.com; s=zohoarc; b=b909Skn8cHrKgFVg+JBYnRPlrRIuP7PPSWEywFR9qTQ6KV9kUXls78c4kA5eCjztR4TE0Pu9T3eFpEAUFJgQQuzzHBtahOKh8UHohF3JaJZitn7UOGK3pBwiudUb1Q0LPdja1fNVDjov1eMaSP9UnKPNARLQpz6irKb7TltPUnA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1695283164; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=R0GXkSqTHbH/ZBRQbFBwBWvD9jnjE8gVvDKE3Mv++oQ=; b=PSR3kz4SyOg+Ls4TColSjj7FnaD4UFaiAHQFar9oVQxFHgGNdA2EqPCskxg4rR+pGSONs19Ypm78S0gvRX2idReMWDo35bjtHwZotus+k873Fa8IRBAKdJtlFHIX+PMZqQY2KyXaMMKSRUb/IPZzpI/4V86OmGvMm+H775RwwlE= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1695283164270121.71968786855655; Thu, 21 Sep 2023 00:59:24 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qjEXz-0008A0-3X; Thu, 21 Sep 2023 03:56:27 -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 1qjEXu-0007l4-4B; Thu, 21 Sep 2023 03:56:25 -0400 Received: from relay.virtuozzo.com ([130.117.225.111]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qjEXp-0002FF-9b; Thu, 21 Sep 2023 03:56:20 -0400 Received: from ch-vpn.virtuozzo.com ([130.117.225.6] helo=iris.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1qjEWT-00BsUn-2B; Thu, 21 Sep 2023 09:55:06 +0200 To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, "Denis V. Lunev" , Alexander Ivanov Subject: [PULL v2 15/22] parallels: accept multiple clusters in mark_used() Date: Thu, 21 Sep 2023 09:54:53 +0200 Message-Id: <20230921075500.694585-16-den@openvz.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230921075500.694585-1-den@openvz.org> References: <20230921075500.694585-1-den@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=130.117.225.111; envelope-from=den@openvz.org; helo=relay.virtuozzo.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Reply-to: "Denis V. Lunev" From: "Denis V. Lunev" via Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZM-MESSAGEID: 1695283166050100015 Content-Type: text/plain; charset="utf-8" This would be useful in the next patch in allocate_clusters(). This change would not imply serious performance drawbacks as usually image is full of data or are at the end of the bitmap. Signed-off-by: Denis V. Lunev Reviewed-by: Alexander Ivanov --- block/parallels.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index a997880c34..3df73aa8a0 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -178,18 +178,20 @@ static void parallels_set_bat_entry(BDRVParallelsStat= e *s, bitmap_set(s->bat_dirty_bmap, bat_entry_off(index) / s->bat_dirty_bloc= k, 1); } =20 -static int mark_used(BlockDriverState *bs, - unsigned long *bitmap, uint32_t bitmap_size, int64_t = off) +static int mark_used(BlockDriverState *bs, unsigned long *bitmap, + uint32_t bitmap_size, int64_t off, uint32_t count) { BDRVParallelsState *s =3D bs->opaque; uint32_t cluster_index =3D host_cluster_index(s, off); - if (cluster_index >=3D bitmap_size) { + unsigned long next_used; + if (cluster_index + count > bitmap_size) { return -E2BIG; } - if (test_bit(cluster_index, bitmap)) { + next_used =3D find_next_bit(bitmap, bitmap_size, cluster_index); + if (next_used < cluster_index + count) { return -EBUSY; } - bitmap_set(bitmap, cluster_index, 1); + bitmap_set(bitmap, cluster_index, count); return 0; } =20 @@ -230,7 +232,7 @@ static int parallels_fill_used_bitmap(BlockDriverState = *bs) continue; } =20 - err2 =3D mark_used(bs, s->used_bmap, s->used_bmap_size, host_off); + err2 =3D mark_used(bs, s->used_bmap, s->used_bmap_size, host_off, = 1); if (err2 < 0 && err =3D=3D 0) { err =3D err2; } @@ -732,7 +734,7 @@ parallels_check_duplicate(BlockDriverState *bs, BdrvChe= ckResult *res, continue; } =20 - ret =3D mark_used(bs, bitmap, bitmap_size, host_off); + ret =3D mark_used(bs, bitmap, bitmap_size, host_off, 1); assert(ret !=3D -E2BIG); if (ret =3D=3D 0) { continue; @@ -792,7 +794,7 @@ parallels_check_duplicate(BlockDriverState *bs, BdrvChe= ckResult *res, * considered, and the bitmap size doesn't change. This specifical= ly * means that -E2BIG is OK. */ - ret =3D mark_used(bs, bitmap, bitmap_size, host_off); + ret =3D mark_used(bs, bitmap, bitmap_size, host_off, 1); if (ret =3D=3D -EBUSY) { res->check_errors++; goto out_repair_bat; --=20 2.34.1