From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792614075; b=Q+NFO1a5n3paFD2oPYXaoS/qtLSOapCHebp7pMhLvb/HrclDMKZPKUrBorIJx7b2XFEX FIXrbkxEdgEvGYn6cyTnDsKnDSv9BWdIUKZszdZLPft3OodHPOj45+1J6yg1j2UNDvOlk iqFVxsmAQ1z6bJZp2J7OqFpHBK0EaIdYjBoVEop0CM5RzKZmdN6/Kl7TaBWDWz6H8iyir WIF8G3wEpyzNg7Fg9YGG5Z8IjRTo0mCPCLFPTP9WnZDVsTvVADgWgVtHO1Zdg3xAApldw EuWXYIxnbxVPWeTFqg4xTwqJXLBfcKq+mZ+8tTZqZxEGpUUsQ5zMqrdYs1ppUkGTw8Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792614075; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:X-Developer-Signature:X-Developer-Key: Content-Transfer-Encoding; bh=47QQzboTv7AoPgZ8tzH/czrKfYk0Q79J1E2KpvO5Lzo=; b=5c2pKzeYcHUFSwnPjqr5fTVM4Xl4pHu4PzTS4uwjdADtOam1LCyJvV/FQMYo9G7eJlq8 gS34mTEm+CvYjmLVZ9IAnT77G6evCbA+FKCxUdx88QmPYKJJPrllGTlObaNRt9K2cjmXq O7QHx4ZvuTKk6IWYTPlyXMmA3P2H1s40OxPS+qfk83N/bkpBGjQknkOxJ6KYJd0CP7b/i 9OFXWN0JsULyeiLOj+JXoScER7sutvL2wd8WGyCOD/eo6Lmc3h6tsSSkBX5EUctX80dAd AD/ii7/oIhFXLbyr5P3oSgutXn8UYf+eC6ocYsUpSBaD9gIdc10uZ52rsPsxzjADvdQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=F495EXlU; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C8A08606A319 for ; Wed, 21 Oct 2026 20:21:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=F495EXlU Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0968F1F000C1; Wed, 21 Oct 2026 20:21:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792614074; bh=47QQzboTv7AoPgZ8tzH/czrKfYk0Q79J1E2KpvO5Lzo=; h=From:To:Cc:Subject:Date; b=F495EXlUzKw9iXkF93Lg6LGeB6Jls91Kyi0I2J9uHoJQ7CIsXTpER9LOnSO3gk8eU wwTC2D2RB52CNXBCMb59GVyvRCGNBJjdVxzpNeL6VKdtE6s2/loAknnAEJ13M0/oiP olwie0gruFJvuANBjTD1KjRPD9tF8Ce0+E1P4ibM7z6teHS5YRBUL5dlGHPixnH1YY Cn5H9Vfh1XSpFcyjs1rYY8m3dW2cmyA+vvSPJ4ty2CCPI4esz5bD+tCvnZ39BnrJhG 85V3eLx1kfPXgUpn8bompzNbFwwdjdFwEw2uzXUVCnZg6EBwevrJnmnEi8jajEgem4 n07a4toKDDMaA== From: Niklas Cassel To: Jens Axboe Cc: Shin'ichiro Kawasaki , Johannes Thumshirn , Damien Le Moal , linux-block@vger.kernel.org, Niklas Cassel Subject: [PATCH 0/2] null_blk: zone resource management fixes Date: Wed, 21 Oct 2026 22:21:01 +0200 Message-ID: <20261021202100.2017938-4-cassel@kernel.org> X-Mailer: git-send-email 2.56.0 X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=904; i=cassel@kernel.org; h=from:subject; bh=T204+bxphM+rnfxU3jBhR7ftF9OLJrJElyhw3uhCIVw=; b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGLJuyq3x/68WIXynUY5zQ4xJb273sVuM818INGbInZWZV 3X5V9PhjlIWBjEuBlkxRRbfHy77i7vdpxxXvGMDM4eVCWQIAxenAExkujwjwyb+OxYCB5nXaVke 6b088fuL2VnyCQkGO9nu51/dc23TASGGf2ouD0XKvrkVvWC1VLxg9zzu0we1xxP3JQQnT1/qZHL gIh8A X-Developer-Key: i=cassel@kernel.org; a=openpgp; fpr=5ADE635C0E631CBBD5BE065A352FE6582ED9B5DA Content-Transfer-Encoding: 8bit Patch 1 fixes writing, opening and finishing a closed zone when both the open and the active zone limits are reached: null_blk fails the request instead of closing an implicitly open zone, as ZBC-3 and NVMe ZNS require. Patch 2 fixes zone_readonly and zone_offline, which can close an unrelated zone, or leak the closed zone count. Both issues were reproduced, and the fixes tested, in QEMU, with null_blk devices created through configfs (memory_backed=0 and 1, CONFIG_PROVE_LOCKING=y). Developed with the help of an AI coding assistant. Niklas Cassel (2): null_blk: fix opening closed zones at the active zone limit null_blk: don't finish zones to set them read-only or offline drivers/block/null_blk/zoned.c | 48 ++++++++++++++++++++++++++-------- 1 file changed, 37 insertions(+), 11 deletions(-) base-commit: f47d223627f80cb7a1eb14c585fe6cb35de5e984 -- 2.56.0