From patchwork Fri Jan 26 15:21:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Solomonik X-Patchwork-Id: 13532809 Received: from mail-wr1-f45.google.com (mail-wr1-f45.google.com [209.85.221.45]) (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 844F51CF9C for ; Fri, 26 Jan 2024 15:21:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706282490; cv=none; b=lYCUvANYHrj3zzCaDHBCZN2fOuA+VbOlEIQyT9JV/kX1TTX2owrUAn/C8neCsm4a/DzVBlziMmkhyWFe6a9akva1Do/aexTxzXYbx1hgUn8r7DJXd7cAVK8Mg7x0VF5UWaWIGfPkR6edSu1L/9f5uNtLdNVt0PRHT14xanbOc1I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706282490; c=relaxed/simple; bh=KLqycvbxyin5EK5xfoYb5x+uoZFu70Qomxz8UPGqFOY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=g2uwiy6h/x9yOgqFatCggqdzgpzHms5vp8TBUZuAikta8wU+G/anP4QUyu0ERU8Hfl9hhKV4uebS1Ls5/Z/h53dZ+MXLagrSPSfgZl8/XLG3WEauoByLmXmgmR8OiqeRIwbhVVguDt9HOBDhKaZl+2X98VsTFkg1yrojOrPl0zM= 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=Z0wcFcgG; arc=none smtp.client-ip=209.85.221.45 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="Z0wcFcgG" Received: by mail-wr1-f45.google.com with SMTP id ffacd0b85a97d-33924df7245so676880f8f.0 for ; Fri, 26 Jan 2024 07:21:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1706282486; x=1706887286; 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=m4H1DhlYjrJNv9sMfgkE4dNp5tHYsFKrmvXGRqcdsmQ=; b=Z0wcFcgG0IxUw1iiVF7rCFJWEIPxgm/gVxaqV9Dy0nN9mQGzw05lZuz5tca4Out3rx kamoc3YB42NYLdatcEBAdvnAEkQG3F5m5DROAOawdr1B3RBnfErt3VIl9cjmuWN7Fs2d sxQH+ENPJuPZDMDnUaCfKDgziJ2vD5opfQ5wvAPS8A7+jCg0758v7zWL3sRkqWqwxfZX 2I7NT94eZR6f6RNQcg7tHQppJoGVjukSC+7QbCwaYKetps6HBH3iZxawSIWFbBvYIif+ HgjLJUILdqohPFXSQqzbbW1xLx3u5JJAiDV3awJSCLdS/FZJ2RVcMsVbIrYpoXJry+8Y DQAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706282486; x=1706887286; 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=m4H1DhlYjrJNv9sMfgkE4dNp5tHYsFKrmvXGRqcdsmQ=; b=QPmcI0j3YSEWCq35F8rLt+dwcpEgdkmyhQ+ThJ210Jxohf6y7PpQd2MKCq8HJ8YkWo MZqU8vqhw9zmw0drQup59E7vGwn4wQz2Q5LQ+R1IHEcW1pRxmgbf2Tkhdpy83KJlB5hI BC7EtO6xOw8/HqFQPCnom/VEbHbkyWE6R3XZ+ttGY+4p8nAl498Y5QMplLT6Nok4RgrY bFqaQczXwQryax4bkT8FoG1h5fkGoiEw7sCAMQmITcGbD4NwzrJP2QX4Ro6U8ONnPq49 aSrWNpPAy/yVSWI85D93+FiuLUfaW/z0PUYiyHGRd2HD5U6dtLeBqm5pdhqfKKIREm3O hLUg== X-Gm-Message-State: AOJu0YwYgq7OPvOjd3ap6IiIiOr2Eh3JGLxc/juuj5Fwt3yy53QPkKnh dpENURo9fP9kdHn64r08+MeDZbx3YNdyg7LSbPO/HYTA+n4XPHH0 X-Google-Smtp-Source: AGHT+IEnzjnuVvPj2oFTOk5PnJjcvQ/+Crss4+7xoR2euNC+UjpIx3bNeBnXfyVmFtAuWJkCAS/4aA== X-Received: by 2002:adf:ec4e:0:b0:337:5b64:7414 with SMTP id w14-20020adfec4e000000b003375b647414mr1189234wrn.100.1706282486644; Fri, 26 Jan 2024 07:21:26 -0800 (PST) Received: from localhost.localdomain ([147.235.201.119]) by smtp.gmail.com with ESMTPSA id bn7-20020a056000060700b0033946c0f9e7sm1493914wrb.17.2024.01.26.07.21.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jan 2024 07:21:26 -0800 (PST) From: Tony Solomonik To: Cc: willy@infradead.org, axboe@kernel.dk, linux-fsdevel@vger.kernel.org, brauner@kernel.org, Tony Solomonik Subject: [PATCH v6 2/2] io_uring: add support for ftruncate Date: Fri, 26 Jan 2024 17:21:18 +0200 Message-Id: <20240126152118.14201-3-tony.solomonik@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240126152118.14201-1-tony.solomonik@gmail.com> References: <20240124083301.8661-1-tony.solomonik@gmail.com> <20240126152118.14201-1-tony.solomonik@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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..fa61d9a39835 --- /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 = do_ftruncate(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);