From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0429F334692; Sun, 2 Aug 2026 19:51:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785700321; cv=none; b=PfYL5GhHqTz6WJ9wM7F2b5QAisg6814jrqzj1TQtLDUFl/NtaD8IrtaPO2AFrSJsiZq1cvhQSZgvKFdvB/2mpfZFl4ccXy34Mu8wm0rZrBNfi/Pbs2nGbg1DOHS7qsD3YyUCzFzDE4vu06GWx+84aFvLquVdfVv/4kNtoIf5tHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785700321; c=relaxed/simple; bh=kt9sa2AjJSIaZe0my3Fo6pjgkgfQlLdOSQMLLiEnGOs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Gw72a3UA4pFe4DhIlMKaAbeOiWOop0Xi0qvJRMfObCsziwiudnEVINak3OEhhsrKd0sKy65PvzTukJST90fKQaKhupSU7QQms1j4iJ7Pe1bys4mmlzvhOXbVBAEGNL/3kWlBHFAkZs4ZpspBzou9YnLmm7WhIqvXEXffI79kpb8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X/bQkBsl; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="X/bQkBsl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3BBF1F000E9; Sun, 2 Aug 2026 19:51:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785700319; bh=5MBbMM4FsgaPEuiAk8SX43polaPfRJ6SfrrnLrmeXzE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=X/bQkBsl2JWRj6NMP5/THMwSUwElNap3fHizsWGyMZcB+punZjBgrcA/2cUFj+H55 CA7OZ1UL7BwulcmtMoytHzKGU12dELCcrltPdM0IZZnFM1GO02gwj0icFmmA3x74yT CQCSInkZzyqymRQ/0m9cjxviDa9NiEU48OWwojSTrGvHSV9zI/xKIKI66dFFfe8uAv p1KnPfwbikX/iEqxUuger5Zh79SNIHcZvqE6O+qjdlUYYRGfWzu+rJAq/ETcwU3P02 u6+dniyynNt6OijfbkxgmpVkRZB8bySf8t+VbFoAALi8EfJ2HerxStrVrnriHVuwWY Z8u0QvMtfIsPg== From: Yu Kuai To: Song Liu , Li Nan , Xiao Ni Cc: Yu Kuai , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, Mykola Marzhan , Su Yue Subject: [PATCH v5 20/29] md/md-llbitmap: don't skip reshape ranges from bitmap state Date: Mon, 3 Aug 2026 03:50:29 +0800 Message-ID: <20260802195038.164272-21-yukuai@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260802195038.164272-1-yukuai@kernel.org> References: <20260802195038.164272-1-yukuai@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Yu Kuai Reshape progress is tracked by array metadata rather than llbitmap. Do not let llbitmap skip_sync_blocks() suppress reshape ranges based on stale bitmap state before the corresponding checkpoint is persisted. Tested-by: Mykola Marzhan Signed-off-by: Yu Kuai --- drivers/md/md-llbitmap.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/md/md-llbitmap.c b/drivers/md/md-llbitmap.c index fa16a4224c45..a20e55fdf82b 100644 --- a/drivers/md/md-llbitmap.c +++ b/drivers/md/md-llbitmap.c @@ -1707,6 +1707,14 @@ static sector_t llbitmap_skip_sync_blocks(struct mddev *mddev, sector_t offset) return 0; c = llbitmap_read(llbitmap, p); + /* + * Reshape progress is tracked by array metadata rather than llbitmap. + * Skipping reshape ranges from stale bitmap state can lose data after a + * restart before the corresponding bits are checkpointed to disk. + */ + if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) + return 0; + /* always skip unwritten blocks */ if (c == BitUnwritten) return blocks; -- 2.51.0