From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f42.google.com (mail-ed1-f42.google.com [209.85.208.42]) (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 E61FD1FC8 for ; Sat, 17 May 2025 12:26:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747484797; cv=none; b=Jl7uEfEJ94HN8KZ4bxdeK5d8p43W6VEtEy8/S9K0tTjpGdGo8nDicLO4NQorJTDLZKyb5JKCN+7chfCPLP/+3mkQPt1CBA1XoAeVBImttiZ2EJkRDU3Hi40j05HBLzWjGyPcUz1g1B8xoZGoRnQ0d4ayYGcLZqhHH+0+cczletE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747484797; c=relaxed/simple; bh=9OS6AChYXsHaXZj8oxwjIEsc23JySsTnSufPr603P9g=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rHMUC/zbfN9X8r7dBYH0VE9AiyaWgJX3ErPJvTJkxLf1euN+tCG0NfL9udEPZR3xnhhZBK8ERuYLEIhlNvXfBkAhkaD00HaE3WmQMkf0vaYeYhuotTHiyC8GRFBwtlyxH8ETd1rTXWRQZOq9ot/v8W5nCngDpYCd2Slqu14nC5g= 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=FU8jkT7S; arc=none smtp.client-ip=209.85.208.42 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="FU8jkT7S" Received: by mail-ed1-f42.google.com with SMTP id 4fb4d7f45d1cf-5fcac09313cso4565968a12.2 for ; Sat, 17 May 2025 05:26:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1747484794; x=1748089594; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=y3SWBMa7ZalrQmLvp3dArYX+uE2Z2HY7j4QWocpr/Is=; b=FU8jkT7SAazc68qtyEiiT6yRyJfChC+aaL9lwltQaE5ioINCFtdKspt0yXdFs/Md5d K/snywBK4zPY5zBRBG9Xpy7sSRW59+Zo2R3mhnEW6capBIRlEx7kYbKyLwMglbthNCKL BSYjmN0kvMaGq3onivceHQspihXd4dLs6BAcHZ9UQitt38w4aP7NIusLmwjW3UpwUtRp EX0GEd60i9xLoBeE5CRQ/r6AsMAIXVNzraEqB4+obRIz1sBqrY5tALWPPTfjGuBKX6iV 2JUdSXagAC/j2lXlBju/J6fZ7cJqBZXU9jNvIM2+qQpcBEdM0ptrpFsvlmlgy8szEdAm a+Mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1747484794; x=1748089594; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=y3SWBMa7ZalrQmLvp3dArYX+uE2Z2HY7j4QWocpr/Is=; b=T3k9BXnpa3gahFwxRP6ikRMmy7gpTI3YCBLrlWeqmNtAmigeQRxuZ476FpWCgpc7zd V4SNIKuOdYw6WpGiWiTmYVv3P/btRoj85zKC0LJrqdz5oiK/yyJP0AOQGvb/aM1M0JQu 7tydXsT+hAUMfJ7mUa/0HooEDkq6sBCieE6UYO+ELejuZIe7/uZlgoFn1aVht8VWFZjg hbGgWFIRrCsYu1c+AAkw9Hbd2n47SGEDQqg6ho3sIQq0f0V53sd2MHYXJMCrdhtE167h VPGapEHrc46npAo82r1xA7xnf8K0WZKE8YeJaDsWISAKyJb3DR6XQ8rz302AO48FiY/J gN/A== X-Gm-Message-State: AOJu0Yw2HwqocprjujOp0e6wKJvJwPt5KnBQ6ge80WOpTyHNtRBq6nCa nkYT9QQUsAogMzA4/rXfM4+dpFHdoZoiJnL1wLRZLaUtAhcYAj3vc5ie7/mLhQ== X-Gm-Gg: ASbGncuLT2Vh9MF8nKHOG0lhSgXjPGGaECRFAhYz/++8UyQ5WHXGGQ68rtF0OVi4YQh Rt8x6+OrixkbjU+5EJlCMkSFyxYjgiyVYvbE5ZXRx0Ts+83yFgeHlMjQWwj4DnpNJQ8bCCnCqef 5/mgvDpv1kOFODyq4bYwJAzYXiYBpnRPPGfz2nPPP4029HiPTkcrByIO/R5UEekLlebkZbIHFmX c5W9KjkqP0OUpvXDWBkDkt3iU5WrSz9If/HpKmN724esfEghI4OVaW92KNoHtAtLl9owG7/i2YN PFOAvfzMmoryT+kV5AJQvkFliKdE+NlTjqDUa97oFMmH9AblGYQ80HPjDpKH5hI= X-Google-Smtp-Source: AGHT+IFemxchSknzFoIWA/ZMfAYwDIYp31pGSreuC8Jc77UhsQ/9znOCgZzKa8kafBCBxTImAjrCYA== X-Received: by 2002:a05:6402:1e89:b0:5ff:97dd:21d6 with SMTP id 4fb4d7f45d1cf-601140a21bamr5071282a12.17.1747484793602; Sat, 17 May 2025 05:26:33 -0700 (PDT) Received: from 127.0.0.1localhost ([85.255.234.71]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6005a6e6884sm2876604a12.46.2025.05.17.05.26.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 May 2025 05:26:32 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: asml.silence@gmail.com Subject: [PATCH v2 0/7] simplify overflow CQE handling Date: Sat, 17 May 2025 13:27:36 +0100 Message-ID: X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some improvements for overflow posting like replacing GFP_ATOMIC with GFP_KERNEL in few cases and debug assertions for invariant violations. v2: nest another lock to get rid of conditional locking Pavel Begunkov (7): io_uring: fix overflow resched cqe reordering io_uring: init overflow entry before passing to tracing io_uring: open code io_req_cqe_overflow() io_uring: split __io_cqring_overflow_flush() io_uring: separate lock for protecting overflow list io_uring: avoid GFP_ATOMIC for overflows if possible io_uring: add lockdep warning for overflow posting include/linux/io_uring_types.h | 1 + io_uring/io_uring.c | 122 ++++++++++++++++++--------------- 2 files changed, 67 insertions(+), 56 deletions(-) -- 2.49.0