From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 61799D6E2A4 for ; Thu, 21 Nov 2024 10:25:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=XftiLEbSkAxfWv6CEZMioYXkmt8BWkrgDvdvMO8qR+g=; b=y3w5H126NdVWUN7pdHF0SJp3dC CIe/svGDs1TtP3Cz0vBjE0Wbc7JPt6zrknINKoxsnzaJZ61C/Yqizba/xkpmEI40dFTq1DcYJE+CL hGVPX7P4Ws4fj4zQo8tRK9ebTtXLWb4l7YtR5P/YwzR35rPeOH6i/HFd3PqvGw8bD3MQmOV33QUQx 8Dt+joMHuwbwKSscpqDjcNs3x8gThluAg97g+3JOSR04dik9H3y1zLPqL3JjGxWFHhWpW+JaYiuYz 29s5Vl0D+uJwanBPYp2yjsro1V3RlBBTUjrWg7dEksBktsZcx0YmXBLpI7ISSqtM5UYyPC6j9iJ8A XFuKr1iA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tE4N2-0000000HMDt-0bnS; Thu, 21 Nov 2024 10:25:08 +0000 Received: from out30-101.freemail.mail.aliyun.com ([115.124.30.101]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tE4Mz-0000000HMBk-1eAj for linux-nvme@lists.infradead.org; Thu, 21 Nov 2024 10:25:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1732184700; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=XftiLEbSkAxfWv6CEZMioYXkmt8BWkrgDvdvMO8qR+g=; b=Qsi4T2nwphG+9U4c3o0YtGH9Rl97//GLheTtxrLD2tMHBa6O7f6Jx77devXSXHLKoTo/P137GZfOqwbKontwI0/d+q2taOD/JWKbvQt8/Axd/pndZjIVMBDGR887KkxGDxJ8q4Wd4LZDelsFYblYjCzrYmjZ6MJJS/btkgE2LVo= Received: from localhost(mailfrom:kanie@linux.alibaba.com fp:SMTPD_---0WJwjaX0_1732184694 cluster:ay36) by smtp.aliyun-inc.com; Thu, 21 Nov 2024 18:24:59 +0800 From: Guixin Liu To: Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni , Keith Busch Cc: linux-nvme@lists.infradead.org Subject: [PATCH] nvmet: handle rw's limited retry flag Date: Thu, 21 Nov 2024 18:24:54 +0800 Message-ID: <20241121102454.122247-1-kanie@linux.alibaba.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241121_022505_908467_321FE94C X-CRM114-Status: UNSURE ( 8.02 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org When the nvme target receive an rw command with limited retry flag, handle it in block backend by setting the REQ_FAILFAST_DEV flag to bio. Signed-off-by: Guixin Liu --- drivers/nvme/target/io-cmd-bdev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index 0bda83d0fc3e..6380b60fd490 100644 --- a/drivers/nvme/target/io-cmd-bdev.c +++ b/drivers/nvme/target/io-cmd-bdev.c @@ -272,6 +272,9 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req) iter_flags = SG_MITER_FROM_SG; } + if (req->cmd->rw.control & NVME_RW_LR) + opf |= REQ_FAILFAST_DEV; + if (is_pci_p2pdma_page(sg_page(req->sg))) opf |= REQ_NOMERGE; -- 2.43.0