From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.143 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794708949; b=TO+m4OvhBh5l/SAhlZoulppXelbe/pxnKwVB1xBI1YH7B0NJOyjdHbKdmdR5Vd7qcJX6 mtcgLFHg0lTUGkKUuonG90/Yz5PsCc3QsyH6e79ytHl4z4gUVBidNZ103cmoXwvkjDoSn 49+Sm/zvFCEPDmT6d311DapmwvxcPID/AEUB9/0wH5djQ5v7tsu+f6Um6hdExJb/C86V/ mVbST3eUbqGr1ZmMYnBZRqt66YjGOuUjoVvo/7V4DxbPsegt14Mm/YbWzCj3qGK9g6aRs OoBPVFrqdCB259qI+geymbk4UZ0L6PGGuyqUIvHzuYhKql/ZpJhT902e1Z7WxaEz+vw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794708949; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:Subject:Date:Message-Id: MIME-Version:Content-Type:Content-Transfer-Encoding:X-B4-Tracking:To: Cc:X-Mailer; bh=wJNVAE3hGD0xcBHiAlWrWhW4WsfP9kLdE+Td0+I2msM=; b=JLTfx+UyMmsAfPbYs0FRvqxqPJGyF8LV804HcZNlWoR85sJFBj993j+4ViEwJoGv28nL pY2Sf5Aa0JLeSSijbQ2PklPMw+ZEJmEIWmb0NgSGjJ+x2kcv1IU1/i+lWi9HOyHMYb8/R cBEB/lMlRgPyNfPXsdz7Prn9lZHXtqVaVWhQ1bXMeQUd+FnLMiAWpvs6iHWbThe7ub+Q1 xZxljuDO+gL+uAGCX8SoUAOux9SucWvaSKCzu2o7gqDQMnbKLRrE02foed7vNNmPeG5R6 +fshAFBtUngqlITSNWPNEJNS+r5OlDsk4BaFFC5wrCP8uVKFsnBHw0Z7XPBIc2oFYjA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=ZU1nKBIC; arc=none smtp.remote-ip=91.218.175.143 Received: from mta0.migadu.com (out-143.mta0.migadu.com [91.218.175.143]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25817606A323 for ; Sun, 15 Nov 2026 02:15:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 25817606A323 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=ZU1nKBIC X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=3drfX2ZBZryBc5zS9B5q86kzE5mXeu2a2mkIXNoI62U=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794708946; v=1; x=1795313746; b=ZU1nKBICQ1DeTN0JCAINs7K+BGUZlJpHxQPhe+9PaVtZvHgM1usp4/5Rabd2cb2RFYtyZpGF KmCfJPygT+F4Gik6ePgzOsYQIpXrCIh81u85Pg2mUj9bqAb9hEh7XEzOmy6GmXoI3QjxlON1peY nXgUzsN5rHPdLfrX2W8kJwcQ= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id c4ac8462579227ad; Sun, 15 Nov 2026 02:15:45 +0000 X-Mizu-Trace-ID: c4ac8462579227ad X-Migadu-Flow: FLOW_OUT From: Qiliang Yuan Subject: [PATCH v3 0/2] nvme-multipath: requeue work fixes Date: Sat, 14 Nov 2026 21:15:37 -0500 Message-Id: <20261114-bug-nvme-mpath-set-live-srcu-v3-0-d84651de6334@linux.dev> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAMkV+WoC/43Nyw6DIBCF4VcxrDsNoHjpqu/RdCEwKIm3gBIb4 7sXXblrM6t/Ft/ZiEdn0ZNHshGHwXo7DjHSW0JUWw8NgtWxCac8Z4xRkEsDQ+gR+qmeW/A4Q2c DgndqASV1WeXCsEwUJBKTQ2PXk3+9Y7fWz6P7nGuBHd8/4cAgnhGlzKiQ1JTPzg7LetcYyAEHf sXYD4wDBaOKglcs07xKr9i+719Vsf5qFQEAAA== To: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , Nilay Shroff , Hannes Reinecke Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Qiliang Yuan , Hannes Reinecke X-Mailer: b4 0.13.0 Patch 1 applies a new delayed_removal_secs to a head removal that is already pending, so that clearing it fails the I/O queued without a path right away instead of when the old delay expires. Patch 2 stops nvme_mpath_set_live() from waiting for an SRCU grace period per namespace, which makes an ANA change with many namespaces take tens to hundreds of milliseconds. Signed-off-by: Qiliang Yuan --- V2 -> V3: - Requeue a pending head removal with the new delayed_removal_secs instead of only kicking the requeue work when it is cleared, as Nilay suggested - Rebase onto v7.4-rc2-470-g7e1392a42ea2 and update the numbers from a new run - Don't carry Hannes's Reviewed-by on the v2 patch 1, which is rewritten V1 -> V2: - Add patch 1 - Take the SRCU cookie under head->lock in patch 2 (Sashiko) - Rerun the tests v2: https://lore.kernel.org/r/20261111-bug-nvme-mpath-set-live-srcu-v2-0-fc772914d293@linux.dev v1: https://lore.kernel.org/r/20261110-bug-nvme-mpath-set-live-srcu-v1-1-1f58b405b0f8@linux.dev --- Qiliang Yuan (2): nvme-multipath: apply delayed_removal_secs changes to a pending removal nvme-multipath: don't wait for a grace period in nvme_mpath_set_live() drivers/nvme/host/multipath.c | 18 +++++++++++++++++- drivers/nvme/host/nvme.h | 1 + 2 files changed, 18 insertions(+), 1 deletion(-) --- base-commit: 7e1392a42ea288d70a266f6553fe06f57f8647ea change-id: 20261110-bug-nvme-mpath-set-live-srcu-cbd8965f1457 Best regards, -- Qiliang Yuan