From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (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 87D591756B; Wed, 24 Jan 2024 08:33:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706085202; cv=none; b=XjK6eH5NgMjB+Vl34m5brJAS9KODN2vsB40aDBPf9zjt8NgIombv5FIkOIlqMHI4BHJ6JBTX8lGXgoYmcf+vi8ubkx1nNawu/rWP8h+OhDiobb5iaeHWq30/qGwVy4K/tZN9cZPaKqe2DRaMAMn4SiugEteTZ0/9JTy1oo0149Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706085202; c=relaxed/simple; bh=U57HBOTNSUwWK6JXf7SozSGBZVqKLXFGT15jeQqjK7E=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=gdcnH8dnS8c/Q7Cqpt2rjLeL2dGFHZE6x9cZwZ5gxzGfsHYT25d0qG2bRV8jCcKfB01i1hzfNGUSRqSr9Teb2sjH7msbNf+TfkXpPfT00hR627pc5KQ1O1AKEVzDJv2/9RpDUh9GIbERNFH5Cyg4dAnclsE3bLJzH0KEyiPvx1s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=JlpvWwdu; arc=none smtp.client-ip=209.85.128.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JlpvWwdu" Received: by mail-wm1-f41.google.com with SMTP id 5b1f17b1804b1-40eac352733so33194225e9.0; Wed, 24 Jan 2024 00:33:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1706085198; x=1706689998; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=1Dvo9cggizruZ6DslyeriNdBJu5DiM1kD2mQfmdGQUk=; b=JlpvWwduOYg5+nyNsq+XdGwIJ/2dcvErwIE2PQpWuFy/FFBaSRGh62+7QvrB9THdJh WfgHvIK1nzWRcEpQSROaR8FKZ8WVMGrBssRGsN4ChzaZon3bB/J18MwwNp8zdOy8lSYO YNSfGzLlvKZfl00I4ntXPTjSVu8n6x0H8vQygMYwcblJf7e2SuacJjbUuUOOUl2VTYc2 YdBI0e7l7YblUDZUvDvNK9zs0Wr3Cq4zcAjGqF47PeBW31MNaa/2X7JSl0nJ0fO8Xopn L3TAddKZCGuETTLhGiQgzwK+OZ7DxOGRHI+mFm8tlWE6JoCsiZcCG8gP+TDAxueUMsq3 ktvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706085198; x=1706689998; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1Dvo9cggizruZ6DslyeriNdBJu5DiM1kD2mQfmdGQUk=; b=ia+c98lIpCt0NoyarCvo7I13JdAJ4mSsRPjy8sq7fejlDo1NeuagSKfUcjzFBuIL1o MoxCByeQY/285UPNs67s0OtXay7VP9wX1sIxNnrsvMF5e8SuiPhMvFmnF5kjDt1xVvGz XuN1bxPHpBr/MscTaPI13ADv6vH1BeaQ6mjnsvx0avIE32lvFeWcwKRds3fYTdQXFa6Y D8eltDLojYwwvs1xNNh4IxPKUzx82ymFBNXLeyPsKamhDSh8I3F3osT6yWLKobNOvymr LnXKD2dzmnsiglwXVxfnPbc7Sr6IzNC+CGnMmYGLJgE/N749BKRBkES2GmdCuJoC22M6 gr2w== X-Gm-Message-State: AOJu0Ywn5g7lS9/BI5NfoaFMlaYIGfoce4Sp4/VrZZECcL7KHFofnhKu TbjB6wQn5O2gjbcIwnXIvnv/2m/a9asxx9qvjVqoN7FMY43kVj8a76imPxwzOijcrA== X-Google-Smtp-Source: AGHT+IEfr2HQF4B9/TcVQ2rGPNwZ25m8t8xFcgrlVtvhMPFcIgOGznGNP8ESmNDF7c421MauC3XhEg== X-Received: by 2002:a05:600c:12cb:b0:40e:47d2:8b01 with SMTP id v11-20020a05600c12cb00b0040e47d28b01mr854639wmd.162.1706085198497; Wed, 24 Jan 2024 00:33:18 -0800 (PST) Received: from localhost.localdomain ([147.235.201.119]) by smtp.gmail.com with ESMTPSA id p16-20020a05600c469000b0040e39cbf2a4sm49324365wmo.42.2024.01.24.00.33.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jan 2024 00:33:18 -0800 (PST) From: Tony Solomonik To: Cc: io-uring@vger.kernel.org, asml.silence@gmail.com, axboe@kernel.dk, linux-fsdevel@vger.kernel.org, Tony Solomonik Subject: [PATCH v5 2/2] io_uring: add support for ftruncate Date: Wed, 24 Jan 2024 10:33:01 +0200 Message-Id: <20240124083301.8661-3-tony.solomonik@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240124083301.8661-1-tony.solomonik@gmail.com> References: <20240124083301.8661-1-tony.solomonik@gmail.com> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adds support for doing truncate through io_uring, eliminating the need for applications to roll their own thread pool or offload mechanism to be able to do non-blocking truncates. Signed-off-by: Tony Solomonik --- include/uapi/linux/io_uring.h | 1 + io_uring/Makefile | 2 +- io_uring/opdef.c | 10 ++++++++ io_uring/truncate.c | 48 +++++++++++++++++++++++++++++++++++ io_uring/truncate.h | 4 +++ 5 files changed, 64 insertions(+), 1 deletion(-) create mode 100644 io_uring/truncate.c create mode 100644 io_uring/truncate.h diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index f1c16f817742..be682e000c94 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -253,6 +253,7 @@ enum io_uring_op { IORING_OP_FUTEX_WAIT, IORING_OP_FUTEX_WAKE, IORING_OP_FUTEX_WAITV, + IORING_OP_FTRUNCATE, /* this goes last, obviously */ IORING_OP_LAST, diff --git a/io_uring/Makefile b/io_uring/Makefile index e5be47e4fc3b..4f8ed6530a29 100644 --- a/io_uring/Makefile +++ b/io_uring/Makefile @@ -8,6 +8,6 @@ obj-$(CONFIG_IO_URING) += io_uring.o xattr.o nop.o fs.o splice.o \ statx.o net.o msg_ring.o timeout.o \ sqpoll.o fdinfo.o tctx.o poll.o \ cancel.o kbuf.o rsrc.o rw.o opdef.o \ - notif.o waitid.o + notif.o waitid.o truncate.o obj-$(CONFIG_IO_WQ) += io-wq.o obj-$(CONFIG_FUTEX) += futex.o diff --git a/io_uring/opdef.c b/io_uring/opdef.c index 799db44283c7..7a83b76c6ee7 100644 --- a/io_uring/opdef.c +++ b/io_uring/opdef.c @@ -35,6 +35,7 @@ #include "rw.h" #include "waitid.h" #include "futex.h" +#include "truncate.h" static int io_no_issue(struct io_kiocb *req, unsigned int issue_flags) { @@ -469,6 +470,12 @@ const struct io_issue_def io_issue_defs[] = { .prep = io_eopnotsupp_prep, #endif }, + [IORING_OP_FTRUNCATE] = { + .needs_file = 1, + .hash_reg_file = 1, + .prep = io_ftruncate_prep, + .issue = io_ftruncate, + }, }; const struct io_cold_def io_cold_defs[] = { @@ -704,6 +711,9 @@ const struct io_cold_def io_cold_defs[] = { [IORING_OP_FUTEX_WAITV] = { .name = "FUTEX_WAITV", }, + [IORING_OP_FTRUNCATE] = { + .name = "FTRUNCATE", + }, }; const char *io_uring_get_opcode(u8 opcode) diff --git a/io_uring/truncate.c b/io_uring/truncate.c new file mode 100644 index 000000000000..4b48376149f9 --- /dev/null +++ b/io_uring/truncate.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "../fs/internal.h" + +#include "io_uring.h" +#include "truncate.h" + +struct io_ftrunc { + struct file *file; + loff_t len; +}; + +int io_ftruncate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) +{ + struct io_ftrunc *ft = io_kiocb_to_cmd(req, struct io_ftrunc); + + if (sqe->rw_flags || sqe->addr || sqe->len || sqe->buf_index || + sqe->splice_fd_in || sqe->addr3) + return -EINVAL; + + ft->len = READ_ONCE(sqe->off); + + req->flags |= REQ_F_FORCE_ASYNC; + return 0; +} + +int io_ftruncate(struct io_kiocb *req, unsigned int issue_flags) +{ + struct io_ftrunc *ft = io_kiocb_to_cmd(req, struct io_ftrunc); + int ret; + + WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK); + + ret = ftruncate_file(req->file, ft->len, 0); + + io_req_set_res(req, ret, 0); + return IOU_OK; +} diff --git a/io_uring/truncate.h b/io_uring/truncate.h new file mode 100644 index 000000000000..ec088293a478 --- /dev/null +++ b/io_uring/truncate.h @@ -0,0 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 + +int io_ftruncate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_ftruncate(struct io_kiocb *req, unsigned int issue_flags); -- 2.34.1