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[209.85.220.65]) by mx.google.com with SMTPS id 123sor11052775pfu.0.2019.07.16.06.26.40 for (Google Transport Security); Tue, 16 Jul 2019 06:26:41 -0700 (PDT) Received-SPF: pass (google.com: domain of lpf.vector@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=O85w6Uft; spf=pass (google.com: domain of lpf.vector@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=lpf.vector@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=iNuXYfJpH7xodxMP8TOSGp32e8S4xkphHFsCZYElfVY=; b=O85w6UftvzCE5S7QNcUPHTwRK89UOIVN5UwkFUBVkoJlgzFkrecIe1HCHZxp8XpTpc LUsUclB+E0i+ylxp3D4lng3UpJtIw1gZXPwBcCaJKcOivr+2o+5GI9PbWUU8w2l4ssaM Qtr9x++RI1Bqm8fFQo7D8JkNWH1KOLvF6koLHwDvY5GzS6HhmQNvb3lah7Oib81HpAUW H5STE9MUFYLpzD/VPToXLQZvmF8aqc9g44wgHJrkD0G6zhs92+jqI5ntp2oCI5TampeZ K+RZc+cL1r1vBvh6vYS5CrrUA77bkwWs9B5APzX0SBgrGjo3Rvd1OWxrYMsqirI00fIB Npbg== X-Google-Smtp-Source: APXvYqxMR+qcGzM00MAIReSnrdIh/7uLycc7Pudrqz68yEXSZKY7d3bokAlFxAcJq29ZEfJxTtL3OA== X-Received: by 2002:a63:6eca:: with SMTP id j193mr33082479pgc.74.1563283600675; Tue, 16 Jul 2019 06:26:40 -0700 (PDT) Received: from localhost.localdomain.localdomain ([2408:823c:c11:bf0:b8c3:8577:bf2f:2]) by smtp.gmail.com with ESMTPSA id q1sm21472311pfg.84.2019.07.16.06.26.33 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 16 Jul 2019 06:26:39 -0700 (PDT) From: Pengfei Li To: akpm@linux-foundation.org, willy@infradead.org Cc: urezki@gmail.com, rpenyaev@suse.de, peterz@infradead.org, guro@fb.com, rick.p.edgecombe@intel.com, rppt@linux.ibm.com, aryabinin@virtuozzo.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Pengfei Li Subject: [PATCH v5 0/2] mm/vmalloc.c: improve readability and rewrite vmap_area Date: Tue, 16 Jul 2019 21:26:02 +0800 Message-Id: <20190716132604.28289-1-lpf.vector@gmail.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP v4 -> v5 * Base on next-20190716 * patch 1: From Uladzislau Rezki (Sony) (author) - https://lkml.org/lkml/2019/7/16/276 * patch 2: Use v3 v3 -> v4: * Base on next-20190711 * patch 1: From: Uladzislau Rezki (Sony) (author) - https://lkml.org/lkml/2019/7/3/661 * patch 2: Modify the layout of struct vmap_area for readability v2 -> v3: * patch 1-4: Abandoned * patch 5: - Eliminate "flags" (suggested by Uladzislau Rezki) - Base on https://lkml.org/lkml/2019/6/6/455 and https://lkml.org/lkml/2019/7/3/661 v1 -> v2: * patch 3: Rename __find_vmap_area to __search_va_in_busy_tree instead of __search_va_from_busy_tree. * patch 5: Add motivation and necessary test data to the commit message. * patch 5: Let va->flags use only some low bits of va_start instead of completely overwriting va_start. The current implementation of struct vmap_area wasted space. After applying this commit, sizeof(struct vmap_area) has been reduced from 11 words to 8 words. Pengfei Li (1): mm/vmalloc: modify struct vmap_area to reduce its size Uladzislau Rezki (Sony) (1): mm/vmalloc: do not keep unpurged areas in the busy tree include/linux/vmalloc.h | 20 +++++++---- mm/vmalloc.c | 76 +++++++++++++++++++++++++++++------------ 2 files changed, 67 insertions(+), 29 deletions(-)