From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 99B62245019 for ; Thu, 31 Jul 2025 19:44:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753991090; cv=none; b=NM4pnPxn/Kbe47p5ochv7ONjfFtb5tzfQ5naIXmyPZvwi9Zsw7WbJsW22DhGAUsNzeUSrQ74IbqoAvq/OYFF9YWr3ozxX0Aewfs8sL4cuQqr5lsP6jozAfCXRui7uOyWpAkBHAl7kGfI0uqnvEBZk88KCchPNMxov+6LVi6qStw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753991090; c=relaxed/simple; bh=6+1jjLum42sVPRRlW6C8wKlbWZIgos3VJtE3dSvKvuY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=sn1nKA29pdfi3aQ2cwTAaDbLhiLZ20y6Hy42/Ca0zB0yDft/uf5G0DDvJ2WXV0Wc1FW+q7rGTPWt590NBJKtacDaSSUrDbsFNJ7HIl3b2FDl9qcW29D3V9R+CpnrnvfrIbVUxo3SEgFMo5TdzbSI7x1NnQCuLBPaUWm7F/RWY1Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rcWwbfqU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rcWwbfqU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F22BAC4CEEF; Thu, 31 Jul 2025 19:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753991090; bh=6+1jjLum42sVPRRlW6C8wKlbWZIgos3VJtE3dSvKvuY=; h=From:To:Cc:Subject:Date:From; b=rcWwbfqUtSFRAPMENaw3uufyUzLNt94opdNMRnO1tiOr7fIi4huNf3+TebFQpqf1z j/KTZd3f97s7AMpBimP+MnuxYvj6lBNpOR9mqAleyNrX23qvG+QPaRjHz0BUM71M/V LbXPZJVrYD1QrTnLl9cGPaTp+kn7s0SqebD5LJlotFevRa1xP72tHUdZr8IV0mcRUx n6jOgs83i6eAwGjMq5A0VMFMOC6i6eJubCDyM5n1cn1umqTpFp5ZcwTAbftxhS2L/Z hZlc6Xxp6+Kmo7UTVOaiukWlCG6TejCznbZm9n8jq8g4ZPe7zwg2EKzqvaFbmTZqzH fTEqg6Eie62zg== From: Mike Snitzer To: Chuck Lever , Jeff Layton Cc: linux-nfs@vger.kernel.org Subject: [PATCH v2 0/4] NFSD DIRECT: add handling for misaligned WRITEs Date: Thu, 31 Jul 2025 15:44:44 -0400 Message-ID: <20250731194448.88816-1-snitzer@kernel.org> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, This series builds on what has been staged in the nfsd-testing branch. This code has proven to work well during my testing. Any suggestions for further refinement are welcome. Changes since v1: - switched to using an EVENT_CLASS to create nfsd_analyze_{read,write}_dio - added 4th patch, if user configured use of NFSD_IO_DIRECT then NFS reexports should use it too (in future, with per-export controls we'll have the benefit of finer-grained control; but until then we'd do well to offer comprehensive use of NFSD_IO_DIRECT if it enabled). Thanks, Mike Mike Snitzer (4): NFSD: refactor nfsd_read_vector_dio to EVENT_CLASS useful for READ and WRITE NFSD: prepare nfsd_vfs_write() to use O_DIRECT on misaligned WRITEs NFSD: issue WRITEs using O_DIRECT even if IO is misaligned NFSD: handle unaligned DIO for NFS reexport fs/nfs/export.c | 3 +- fs/nfsd/filecache.c | 11 +++ fs/nfsd/trace.h | 52 ++++++++--- fs/nfsd/vfs.c | 188 ++++++++++++++++++++++++++++++++------- include/linux/exportfs.h | 13 +++ 5 files changed, 220 insertions(+), 47 deletions(-) -- 2.44.0