From patchwork Fri Jan 3 15:02:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Harmstone X-Patchwork-Id: 13925652 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) (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 2F5321E00B4 for ; Fri, 3 Jan 2025 15:02:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.145.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735916565; cv=none; b=aVenzqjjioBhSlVlcO9QxoSf1Tjaulh2nd39vvSg2wJGkgc7r/WIVp+RCTKNMFw4w12OXYLs+c5oLaC6RrQDmsAxQbQf1azbzo/0q3RwfUhCLfCZfsUaBKgharbewLmYXiv5B0RlPwI+eknlTwC/4+bqxwJt8NdYE6P2uZqGtps= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735916565; c=relaxed/simple; bh=4aahraanp2aCJrcRzQapKIxEIMyGrSTQXlPaesbo4pY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=s7Jtfuw8O1vXNGnzGryGlzr7wxznIrGQ0Rm18QIH1weBKEB3zbIIQIPFC7iPUxPtf9qhPk+kXfFVX3OyUh9Z/ZMSdiIVs4M1qeNt5chNsBtC49txq4iFtEE6lc9jyXUveclZnu/Pun8BlvAFd0jAnNP/VnDS+JQnPdOVPyjqCvw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fb.com; spf=pass smtp.mailfrom=meta.com; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b=STincNMU; arc=none smtp.client-ip=67.231.145.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fb.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="STincNMU" Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 503F0ETC019514 for ; Fri, 3 Jan 2025 07:02:43 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=facebook; bh=s tGux1wet2iWTlhX6o4p5IkYLm9U0F7/7qdrSdQL2xQ=; b=STincNMUaRwLb7wD3 wuyPlEJB0MIwDzBuTUXAgrDi7a/ouZXlU549LvNe1p6f5KBhCqr9i139YSePnc5g ZMFUCLFjodrlwpTJb1FD1bwhNWY7tyCsoVb+B7nkRUi6Mp6ym6uM+VpcimshUckV KyPkP/uqtzfwMgtoXds7DeDp3s= Received: from mail.thefacebook.com ([163.114.134.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 43xetn90bn-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 03 Jan 2025 07:02:43 -0800 (PST) Received: from twshared3815.08.ash9.facebook.com (2620:10d:c085:208::7cb7) by mail.thefacebook.com (2620:10d:c08b:78::c78f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.14; Fri, 3 Jan 2025 15:02:41 +0000 Received: by devbig276.nha1.facebook.com (Postfix, from userid 660015) id 6A363A240685; Fri, 3 Jan 2025 15:02:34 +0000 (GMT) From: Mark Harmstone To: , CC: Jens Axboe Subject: [PATCH 2/4] io_uring/cmd: add per-op data to struct io_uring_cmd_data Date: Fri, 3 Jan 2025 15:02:24 +0000 Message-ID: <20250103150233.2340306-3-maharmstone@fb.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20250103150233.2340306-1-maharmstone@fb.com> References: <20250103150233.2340306-1-maharmstone@fb.com> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-ORIG-GUID: HQ9XNTRhhI78sN0rcpnxlPC9qhSiroE4 X-Proofpoint-GUID: HQ9XNTRhhI78sN0rcpnxlPC9qhSiroE4 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-05_03,2024-10-04_01,2024-09-30_01 From: Jens Axboe In case an op handler for ->uring_cmd() needs stable storage for user data, it can allocate io_uring_cmd_data->op_data and use it for the duration of the request. When the request gets cleaned up, uring_cmd will free it automatically. Signed-off-by: Jens Axboe --- include/linux/io_uring/cmd.h | 1 + io_uring/uring_cmd.c | 13 +++++++++++-- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h index 61f97a398e9d..a65c7043078f 100644 --- a/include/linux/io_uring/cmd.h +++ b/include/linux/io_uring/cmd.h @@ -20,6 +20,7 @@ struct io_uring_cmd { struct io_uring_cmd_data { struct io_uring_sqe sqes[2]; + void *op_data; }; static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe) diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index 629cb4266da6..ce7726a04883 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -23,12 +23,16 @@ static struct io_uring_cmd_data *io_uring_async_get(struct io_kiocb *req) cache = io_alloc_cache_get(&ctx->uring_cache); if (cache) { + cache->op_data = NULL; req->flags |= REQ_F_ASYNC_DATA; req->async_data = cache; return cache; } - if (!io_alloc_async_data(req)) - return req->async_data; + if (!io_alloc_async_data(req)) { + cache = req->async_data; + cache->op_data = NULL; + return cache; + } return NULL; } @@ -37,6 +41,11 @@ static void io_req_uring_cleanup(struct io_kiocb *req, unsigned int issue_flags) struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct io_uring_cmd_data *cache = req->async_data; + if (cache->op_data) { + kfree(cache->op_data); + cache->op_data = NULL; + } + if (issue_flags & IO_URING_F_UNLOCKED) return; if (io_alloc_cache_put(&req->ctx->uring_cache, cache)) {