From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from va-2-38.ptr.blmpb.com (va-2-38.ptr.blmpb.com [209.127.231.38]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B11C41E0E14 for ; Thu, 18 Jun 2026 02:57:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.127.231.38 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781751476; cv=none; b=F0LaYwv8HcPh5nUhBSF4b7LZ+dVBVgahtnuFPqrb7SDW5QxJdfCaPKHtHVvdiA9YHOEq90HEOCA3tPE6kOJP0j1xgAKeyF1lDwZQ1fspkerHOX8NmDP2PHoEFkZ2CmQBsIgeASTU8X7cC9OUWe3jzWkfdAEq2dpYTKELBJo4Lgs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781751476; c=relaxed/simple; bh=/+Dp81K70IwWqTnRgMrnfsphVKYjQbV9LhAbltJxesE=; h=Mime-Version:Content-Type:Cc:From:Message-Id:To:Subject:Date; b=O+yjwxGHbzBUlHNVsPNipeBkTSjSzD/gDYuYiNA7HLubnK70Hw/GrF2YAyxrRZO2y4pl4Y+Nh6zXGnftUJpR4x6mFguSLhYPs82eufTqju+zJ3yYZLz0k8p2bICBSo0QNiTC/eaSZWD5f0FAsuLcxjRH2aMxflLO9YnkObKq/r4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fnnas.com; spf=pass smtp.mailfrom=fnnas.com; dkim=pass (2048-bit key) header.d=fnnas-com.20200927.dkim.feishu.cn header.i=@fnnas-com.20200927.dkim.feishu.cn header.b=P/enYr1O; arc=none smtp.client-ip=209.127.231.38 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fnnas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fnnas.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fnnas-com.20200927.dkim.feishu.cn header.i=@fnnas-com.20200927.dkim.feishu.cn header.b="P/enYr1O" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=s1; d=fnnas-com.20200927.dkim.feishu.cn; t=1781751469; h=from:subject:mime-version:from:date:message-id:subject:to:cc: reply-to:content-type:mime-version:in-reply-to:message-id; bh=2FFBI3WHEacoqD04s8wfoksWUTh1W7V1TTUgd/m4zOY=; b=P/enYr1OOrgwvbhcNFT4Uwlp+dOJb6GP7E7Vfy8QgHPdAO1zohWs6G0LbVoXOmtZy3z3E6 w9wiCscPhBRWefnAPyK7ThNr0ZNTZmuZmPiL2m+TpVezCUNTfWhuuG1lEO47NPLfOSESbt fVytV33fxtsmrN9+eOloJsate6DdoN9Cjku1evDMwnldHwarxO9TjkDxr0bbrFuCRQEa/m 7mSe2oNmtfDRNFIJ/54LtwVSvGLdfOFiRhdiRf6ldNF1LHIoqM1ArWi3e5mxJHs3CvL+Kd pzmulIrVB5P9/u9lI2Z2jdSwSq1qmCxljzQ7jPajaTMH7ZnkG9+QatCHWmMuEg== Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Original-From: chencheng@fnnas.com Content-Type: text/plain; charset=UTF-8 Cc: , , From: "Chen Cheng" Message-Id: <20260618025735.915113-1-chencheng@fnnas.com> X-Lms-Return-Path: Received: from localhost.localdomain ([183.34.170.8]) by smtp.feishu.cn with ESMTPS; Thu, 18 Jun 2026 10:57:47 +0800 To: , , Subject: [PATCH] md/raid5: let stripe batch bm_seq comparison wrap-safe Date: Thu, 18 Jun 2026 10:57:35 +0800 Content-Transfer-Encoding: 7bit X-Mailer: git-send-email 2.54.0 From: Chen Cheng 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 --- 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 6d01c35b5499..a08230aac711 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -997,11 +997,11 @@ static void stripe_add_to_batch_list(struct r5conf *conf, md_wakeup_thread(conf->mddev->thread); 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; } -- 2.54.0