From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f44.google.com (mail-lf1-f44.google.com [209.85.167.44]) (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 6BD5078F5D for ; Fri, 4 Jul 2025 15:25:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751642743; cv=none; b=gCa6v569vOUybeij264izqZM5TKkKVzZk+N3SrG1iKuAlBlG08KSRCu6Cr1zZPdEzMqnV1ecbC7wTch6ig4M/134KfOY2qQJYj9kl8k/D6eaatbP/mc3P0c20Nu7edrx0lZ2RDIiL+VSfsu7+QWMXs/jkGDxGZdgaXnm28hxL0c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751642743; c=relaxed/simple; bh=vVn/Hp4/IQZ8McWBavORM0Lve3vej0D8t4I3uI74Do4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=l6hx6YakMdgvnrolyQKX39KqO0Ws1R1rrdp2w65h3wAfGZLUDYGmJMWTcwBrm1gXZglw8tAgoxN2Kqv1vx1A5ZrUhpN513YuEb/1BsSlXrIDTD73I9Xh0yUwJmtUfzi/+lQ/+iLOezVr3JPMjnvSQU+mIbOnHipNCkwlzz4F/wk= 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=R2B0S6EX; arc=none smtp.client-ip=209.85.167.44 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="R2B0S6EX" Received: by mail-lf1-f44.google.com with SMTP id 2adb3069b0e04-553dceb342fso1104985e87.0 for ; Fri, 04 Jul 2025 08:25:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1751642739; x=1752247539; 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=nNzVkgal/hud1TevC2XxHRKgzRdyc1tLSbBrI5duNP4=; b=R2B0S6EXRz4HVJJYhS61sbMY7Alzyvk7MPYToegVg5ugAY71MEbByPG0DIjI1d3mgA f0Va32i3hnbGNJSCnlFAqeesC4OB4DmXyZg+2H0PKyw4oI+DalFFZF2/OytifdynHlCk IoWD9ym+xfqoyCJUgiWLD+MY5Hy9l1HjVoHtVwclP7n3FSpD6GmyZia6VnbZuNAC+Kb6 JoTGiyxgbegLG5Y+4Wrkvg5c0rfoy6CEVqJoeBlXX5+do8q8ZkI3IccMzqt0fpb+5xkB CKc8GKW84yzm4kXNIkuNlhIpC6x7xZ+QsKWArCMib4Hk1dliS4y+WbCu+6YMbxmNuXZr L7hA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751642739; x=1752247539; 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=nNzVkgal/hud1TevC2XxHRKgzRdyc1tLSbBrI5duNP4=; b=lEMc/tc4kPipg1Xcbx5+aJqWV4AtNcejRB1xNAhjpw34rP7kHV3qyOEfX0sOtrDGP6 0eNaOqoBy2uOoMlDfVoWwQtS/yWa1I0/7mw8mUiCRMiqYCRYaaLyUzLUh8jBfKWWuDMV FqcrIOtDuBFtUw4z060vhlF4v1tbJ7KC30/7APdzHDhLbVWdX5tkhsvOhwE1uHDHqmHM yuYkk2640uDBcerevM/kq9O9mAS/I0kmeztG+MetBaWagqYjqYXZOgPDWAasc7jp5S93 19M4G7922NognGvfWw8+/9TvNrKY7W2RiOHSryXPLHq3fFYn2PZSMXLdZfBTwBCuX2DF 1fxA== X-Forwarded-Encrypted: i=1; AJvYcCXfdXZ1S/VhoGohSIWSXZBl71UuY9KBXcFLK1gGlZxIubNxO2lpZwi4nP5m7ELipzYmQjhJgNLibSac8Yk=@vger.kernel.org X-Gm-Message-State: AOJu0YxU6cMO9LGg0qYSJwFiw2XZWlMlbT7FWCNrZvGqVeEB6GaurXyl 4R5Lz6R/7dTIZOJFwbJeU2XAGmr0wasn16OvdV868I1aVXTFvvblHbOt X-Gm-Gg: ASbGnctb+E4ATs9eGTCGyAaRwLxaPO1kbjD2e1d9Jd0i9ILTY5tNx7PRQhqW+LByeoq 4E/An+005APN8qSnEO8GpRwYvncBPDf4pjXNRPZnntUvW6nED+KxbFNBaknSMVYvg4r55OquLGK soedVeGYTAk8gEHqV3vDVDsZ6ii6/DSDzjkJuzV/F1qW3BBg3Q4Z8U7oG1KLjon8G8cxLrUikC+ NOABlyu69osRNljaWTkCv4MXaySMF4qu932BkRLyOlG55B93h23eyKJ85FlrMvAVSACs88odmeL 5/OwYXW7Itp+s1tRcFTMdZCyxCbfeInI5bJrg7y/CCOxxtAWbqmU3FLMUsUwsDAoyMBX X-Google-Smtp-Source: AGHT+IFyqlS3XwUEofns+iepD0qC/f9e1YeFjK5MoXU0+BuUCc1OyJ8GdeEVZi1FkBvldruB0hcJiA== X-Received: by 2002:a05:6512:3094:b0:553:ad9b:cfb1 with SMTP id 2adb3069b0e04-556dc26557amr1051332e87.9.1751642739158; Fri, 04 Jul 2025 08:25:39 -0700 (PDT) Received: from pc638.lan ([2001:9b1:d5a0:a500:2d8:61ff:fec9:d743]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-556383bb113sm281028e87.11.2025.07.04.08.25.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jul 2025 08:25:38 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: linux-mm@kvack.org, Andrew Morton Cc: Michal Hocko , LKML , Baoquan He , Uladzislau Rezki Subject: [RFC 0/7] vmallloc and non-blocking GFPs Date: Fri, 4 Jul 2025 17:25:30 +0200 Message-Id: <20250704152537.55724-1-urezki@gmail.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This is a small series tends to support non-blocking GFP flags such as GFP_ATOMIC or GFP_NOWAIT. This is a draft version and it should be improved or changed. For example there are still hard-coded GFP flags in the: kmsan_vmap_pages_range_noflush(addr, end, prot, pages, page_shift); if the kernel is build with KMSAN support. There are other parts which should be fixed. But i tested this series with a fresh non-block-alloc test together with CONFIG_DEBUG_ATOMIC_SLEEP=y to track sleep in atomic issues. Based on: VERSION = 6 PATCHLEVEL = 16 SUBLEVEL = 0 EXTRAVERSION = -rc1 Uladzislau Rezki (Sony) (7): lib/test_vmalloc: Add non-block-alloc-test case mm/vmalloc: Support non-blocking GFP flags in alloc_vmap_area() mm/vmalloc: Avoid cond_resched() when blocking is not permitted mm/kasan, mm/vmalloc: Respect GFP flags in kasan_populate_vmalloc() mm/vmalloc: Defer freeing partly initialized vm_struct mm/vmalloc: Support non-blocking GFP flags in __vmalloc_area_node() mm: Drop __GFP_DIRECT_RECLAIM flag if PF_MEMALLOC is set include/linux/kasan.h | 6 +-- include/linux/sched/mm.h | 7 ++- lib/test_vmalloc.c | 27 ++++++++++++ mm/kasan/shadow.c | 22 +++++++--- mm/vmalloc.c | 93 +++++++++++++++++++++++++++++++++------- 5 files changed, 129 insertions(+), 26 deletions(-) -- 2.39.5