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 ADBCC2E266B for ; Tue, 8 Jul 2025 16:21:08 +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=1751991668; cv=none; b=bP7ppv988Eju4mAN8W11zp/TXDF5bohl5CRHQDfynbUP7nr7QEYgYpeWNVhNSQTaC6yhc+77uxkqQ0oyN3Y6K9tg9/FwJf1gerUj43Twk2PbHCwNJDDK+gHkoT874MnP9KHuinpnv8zb1Ra56dxKJwW4njn66Kay42oLBPuKNHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751991668; c=relaxed/simple; bh=RswZhALhFqeW0crUIdbHyFrkqMzxaKmEeWHcNg04HbA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=fwxzbD5fowLQFHAcuepEQFXHLIa4wDd40yENNZuN+L6b1ejDt6gmTkCHuZVE6fA17xMmTtoB9fYHD5HYXTacFrVVQ3zkqOo31KAGGdjhiRnNLQqPwVqSQXEhUnahAs32rmlyrNTh9mH4fA/C3qoo1t4eBk9FyKcHyMAGdgHXT4A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HcwBrfE5; 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="HcwBrfE5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1DBDCC4CEED; Tue, 8 Jul 2025 16:21:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751991668; bh=RswZhALhFqeW0crUIdbHyFrkqMzxaKmEeWHcNg04HbA=; h=From:To:Cc:Subject:Date:From; b=HcwBrfE57W0AVLHn4fQAEC8M3dddR7HYz3CjsZohBFtuL9+Fficp3ESMg/8YGpuyv dtcvXnk60FTwWjfcraCFhuCBMFOtXuPJlgFsAhZBKWDV7ZP/EwpSiRfJuxmDM6qAmF SCzB3ijJDraFT2ckeujbiKGjjnMQe7zCwOI1LB+em14X2Stzv68ug2/Wp9VIINX5tK jg0PT7W35yRg5Tg/bN8Ux+X8gBeyhMu3sy5Y5bgL2iU4QakqvAZ51RJskXKaRrkept r3heqlajZEFr2C4BCNMa0tcB+Xywykmlkm4cGd/vhicGC/ex+6jnTXI2Wu34BexiDZ CpRPfpx/NcsTw== From: Mike Snitzer To: Trond Myklebust , Anna Schumaker Cc: linux-nfs@vger.kernel.org, snitzer@kernel.org Subject: [RFC PATCH 0/6] NFS: LOCALIO improvements and support for misaligned O_DIRECT READs Date: Tue, 8 Jul 2025 12:20:41 -0400 Message-ID: <20250708162047.65017-1-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 patchset benefits from this NFSD patchset: https://lore.kernel.org/linux-nfs/20250708160619.64800-1-snitzer@kernel.org/ (particularly due to patch 6 leaning heavily on NFSD's ability to expand misaligned O_DIRECT READS to be DIO-aligned). First 3 patches are general LOCALIO improvements. Patches 4 - 6 added dio_alignment awareness to LOCALIO and make it possible for LOCALIO to punt IO over to NFSD (via loopback network) so that it can take advantage of NFSD's io_cache_read=2 to handle misaligned O_DIRECT READs so that they are issued as DIO-aligned. Thanks, Mike Mike Snitzer (6): nfs/localio: avoid bouncing LOCALIO if nfs_client_is_local() nfs/localio: add localio_async_probe modparm nfs/localio: make trace_nfs_local_open_fh more useful nfs/localio: add nfsd_file_dio_alignment nfs/localio: refactor iocb initialization nfs/localio: fallback to NFSD for misaligned O_DIRECT READs fs/nfs/flexfilelayout/flexfilelayout.c | 1 + fs/nfs/internal.h | 4 +- fs/nfs/localio.c | 232 ++++++++++++++++--------- fs/nfs/nfstrace.h | 6 +- fs/nfs/pagelist.c | 15 +- fs/nfsd/localio.c | 11 ++ include/linux/nfslocalio.h | 2 + 7 files changed, 178 insertions(+), 93 deletions(-) -- 2.44.0