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 3FF1F4FECD9; Wed, 30 Sep 2026 15:38:29 +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=1790782714; cv=none; b=t5aaADJiBjL2bZ1Mr6oOZKbTHjrTkreW/2yJOtJNReGo7lF5ELMPLilXhtFfg3ueBrMrTDNaEAoGlu45JEJo9PkTMVqN27LpyDNqADmvzP1MbfYUulPgFszKVzY62Cle8d9auXJII3mBGrwQK/bVj3liJwDO2QxVOVd6+LUdE8M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790782714; c=relaxed/simple; bh=1tij8Hsqes3T0Vca7hp7aI3JvIpuGxhyf5VDNxUt+ks=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ADwpk6c+60rqdGhIFV39c+f+uPHHohQnMj6L4FrFAsUo9zDHjDZKcho4GsEG11p5G37niM2UzN3KcSpWdyMrSzpUljFTvG8MEdooGnvjSQsWWEvkSw9YqeYNKxsjhcD95knH97fZE8dh0oQYcFaPHm6JaHeMnIcnNNo7D8rK470= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=C+8oEjYa; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="C+8oEjYa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C89F61F00893; Wed, 30 Sep 2026 15:38:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790782709; bh=0UvfDCtjyteY7qBpCCwN51EMtAVBFnh3U4tv0ruY7hs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=C+8oEjYalgrSgwcuZowoz+jonWxcsU8L0BC3Q6lY96w0W2PX7VHZJQO9hWdXBU8Sb jZsqqljrPgQT+5BcjMPKIbrD1z2KufDCwJpA8mx/cDwHLvjMR9f6KTeJeeVUkVa6JE Jaav0kvgYIx5VOvQASCGGROZfSwwpxQ4CHpmua/g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chen Cheng , Yu Kuai , Sasha Levin Subject: [PATCH 5.10 141/595] md/raid5: let stripe batch bm_seq comparison wrap-safe Date: Wed, 30 Sep 2026 17:20:34 +0200 Message-ID: <20260930152350.766453148@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152347.700140858@linuxfoundation.org> References: <20260930152347.700140858@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chen Cheng [ Upstream commit 00e93faf4cea9e8802ac5dfee0952d84fc95c40f ] Once the 32-bit seq wraps, a newer bm_seq can look smaller than old, so .. covert to wrap-safe calculate way. Signed-off-by: Chen Cheng Link: https://patch.msgid.link/20260618025735.915113-1-chencheng@fnnas.com Signed-off-by: Yu Kuai Signed-off-by: Sasha Levin --- drivers/md/raid5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 637acb8ef60d3..5e929ceb45805 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -911,7 +911,7 @@ static void stripe_add_to_batch_list(struct r5conf *conf, struct stripe_head *sh if (test_and_clear_bit(STRIPE_BIT_DELAY, &sh->state)) { int seq = sh->bm_seq; if (test_bit(STRIPE_BIT_DELAY, &sh->batch_head->state) && - sh->batch_head->bm_seq > seq) + sh->batch_head->bm_seq - seq > 0) seq = sh->batch_head->bm_seq; set_bit(STRIPE_BIT_DELAY, &sh->batch_head->state); sh->batch_head->bm_seq = seq; -- 2.53.0