From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (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 BA5A0C2C7 for ; Wed, 24 Jan 2024 04:51:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706071878; cv=none; b=kE06mtymuoIfpHKu7ed1qoiyaV/6VTTfo4gmZesn77/z8W5TezjHQe1IZKI9+tN/FFFBkqriYojBbLGtKY93gT+fE9E5WlxqFK7UIbu1Kk/gB1mtiaPvRl+65Vo0hchiD1EsC1Telmk+q5ASqpDev0EGgjzSLcGpqrC5LqS2uD4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706071878; c=relaxed/simple; bh=ie+we1nj+mw7e9ONK+IgxcW9mHL0I0DPXCgErXIomSA=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=NBG653NEP7hFwA5Mvk6yItW9RLbn32jGrecDJn9vJP5oXRfsNj9uXM7m5erbH/bDm4jxwYa3BW23caDtNsQPmY0fqhMeW78IdVSFeyzwRdKC5+e+n9IBCvjhniind4Es7ENNq9plmCYXDSi2eyPhvbUPLgvPm+U1wl4KCnANdQQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--yosryahmed.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=OzxvyZg/; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--yosryahmed.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="OzxvyZg/" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc60902da2cso481639276.3 for ; Tue, 23 Jan 2024 20:51:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1706071875; x=1706676675; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=TID2fOsjU/jpHwDMlLW9FAqgk4WlE0mPeuj0sjEkApw=; b=OzxvyZg/Ika2zgqCROsW02XTv9ThAlwtL4ept2K/kvOkomx6fhm68rsrTY6gaHjuB1 /joVwN7/zLJwjxMrNV4n7YdCzIracRkKQcymSfs7mqansyzH50ZMpspanLveoB+Eez2c cJ4nYleeo8/+W9yFUv5we9Rwju88DMeH9xwv33Q/u03yzMj4WkvQUUD6jRZY1Q6RswNU Vw5pQm7rz1JoPpVP7im3DNVNRWtXfYzjqIrIkp/OSVXVoBoi2ceWaIMmDwIkwOsAMgJ1 tSVi3Ahr/rz722WjAOvq2VVYsAW+2jsUoOQRUWTUWDiwRNlInw+8u0WIuVqGtSKde+7P V/zA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706071875; x=1706676675; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=TID2fOsjU/jpHwDMlLW9FAqgk4WlE0mPeuj0sjEkApw=; b=O06X1qgnNcFdvkYXWyQH4DHF2jl7qmxj58TEScLGhagprTORjbTRo2epqTtN9b+L7z CaEDDllqTbql58CaEH8VN8KPYvHNMZzgvQq3cDxy90kuSv+1Y4AEEgvOMOkrCr7ZOzv8 LanqWKyVGZQvvHWW7g4iguXuQgn76Jc2eyt6TeZ3TVtaZRl+Z5eAMHAjzXrhiK+Y3X3k LJdmsDCFxNz1+UDuh88BfUeGbjvS8FkWCZlEfkK5mh6KnibkYscslmpsSEgeVVn/8oS2 sjygq87pYupl7OwHiOhyYx4f0wBAxFks8HoYKcQ8AVSviz8ZoJ4bx8lW2e2610mzB/Wh Olyw== X-Gm-Message-State: AOJu0Yz2ESUYWt7j50iXbGRIU4Po/cJRrVxTpM4Qr8K0YqhLWw90JhS5 KQX+qTgTIiLsQ1qHmP1TbV8wqT9BquOtK9rqBWZnGHrMir1brVc4p/5MLMHoxyvyvzlcQ/0ZDmV Rt/apwnvUPfRy2PNMZA== X-Google-Smtp-Source: AGHT+IEKHRkvZtEqQFYQePKvwjkaz0hLWiFmv056VOKUYgz3ApLJR31SjOkQJQJuNissfgTKaLWLZOPKt3b2VyqT X-Received: from yosry.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:29b4]) (user=yosryahmed job=sendgmr) by 2002:a05:6902:a8f:b0:dc2:5237:81c7 with SMTP id cd15-20020a0569020a8f00b00dc2523781c7mr151808ybb.3.1706071875767; Tue, 23 Jan 2024 20:51:15 -0800 (PST) Date: Wed, 24 Jan 2024 04:51:10 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.43.0.429.g432eaa2c6b-goog Message-ID: <20240124045113.415378-1-yosryahmed@google.com> Subject: [PATCH v2 0/2] mm: zswap: simplify zswap_swapoff() From: Yosry Ahmed To: Andrew Morton Cc: Johannes Weiner , Nhat Pham , Chris Li , Chengming Zhou , Huang Ying , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yosry Ahmed Content-Type: text/plain; charset="UTF-8" These patches aim to simplify zswap_swapoff() by removing the unnecessary trees cleanup code. Patch 1 makes sure that the order of operations during swapoff is enforced correctly, making sure the simplification in patch 2 is correct in a future-proof manner. This is based on mm-unstable and v2 of the "mm/zswap: optimize the scalability of zswap rb-tree" series [1]. [1]https://lore.kernel.org/lkml/20240117-b4-zswap-lock-optimize-v2-0-b5cc55479090@bytedance.com/ Yosry Ahmed (2): mm: swap: enforce updating inuse_pages at the end of swap_range_free() mm: zswap: remove unnecessary trees cleanups in zswap_swapoff() mm/swapfile.c | 18 +++++++++++++++--- mm/zswap.c | 16 +++------------- 2 files changed, 18 insertions(+), 16 deletions(-) -- 2.43.0.429.g432eaa2c6b-goog