{"id":2224869,"url":"http://patchwork.ozlabs.org/api/1.1/covers/2224869/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/cover/20260419063436.17999-1-liubaolin12138@163.com/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/1.1/projects/8/?format=json","name":"Linux ext4 filesystem development","link_name":"linux-ext4","list_id":"linux-ext4.vger.kernel.org","list_email":"linux-ext4@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260419063436.17999-1-liubaolin12138@163.com>","date":"2026-04-19T06:34:34","name":"[v2,v2,0/2] add blocks_allocated to mb_stats and clear mb_stats","submitter":{"id":89479,"url":"http://patchwork.ozlabs.org/api/1.1/people/89479/?format=json","name":"Baolin Liu","email":"liubaolin12138@163.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/cover/20260419063436.17999-1-liubaolin12138@163.com/mbox/","series":[{"id":500484,"url":"http://patchwork.ozlabs.org/api/1.1/series/500484/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=500484","date":"2026-04-19T06:34:34","name":"add blocks_allocated to mb_stats and clear mb_stats","version":2,"mbox":"http://patchwork.ozlabs.org/series/500484/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2224869/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-ext4@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256\n header.s=s110527 header.b=J5BdsFmp;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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arc=none smtp.client-ip=220.197.31.2"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com;\n\ts=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=PI\n\t6Ymg5aJxzRVLwyUqr0UWzaz/U5NFi9ESZL5EWMitQ=; b=J5BdsFmpJQany7Xjii\n\tdy0X/mWUwB0OQqy3ZK/loRBudBYzkBF4liQ406Eaxvfecg3Fo/oiVMp4oZlU+Kt/\n\tKaGZaN/SDoDGoHMBSE7Za/XLic/fyp1t1N4YpFxD7lnbUBVPm8No0qri37P7cJEg\n\tnV2yIXPFvx6FnhlojWTaCmHcg=","From":"Baolin Liu ","To":"tytso@mit.edu,\n\tadilger.kernel@dilger.ca","Cc":"wangguanyu@vivo.com,\n\tliubaolin12138@163.com,\n\tyi.zhang@huaweicloud.com,\n\tritesh.list@gmail.com,\n\tojaswin@linux.ibm.com,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org","Subject":"[PATCH v2 v2 0/2] add blocks_allocated to mb_stats and clear mb_stats","Date":"Sun, 19 Apr 2026 14:34:34 +0800","Message-ID":"<20260419063436.17999-1-liubaolin12138@163.com>","X-Mailer":"git-send-email 2.51.0","Precedence":"bulk","X-Mailing-List":"linux-ext4@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-CM-TRANSID":"PigvCgBHBQKBd+Rp1PA9Ag--.97S2","X-Coremail-Antispam":"1Uf129KBjvdXoWrKFWrXry3Xw15CrWDCry8Zrb_yoWfCrb_Wa\n\t4FgryrA34avF1DCFy8Gwn5tryY9FW7Jr1DGFn8Jr4fZFy5XrsrCayDGr13Zr1xWr4ayr15\n\tCr1xWw1xCrn2vjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT\n\t9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRNtCzDUUUUU==","X-CM-SenderInfo":"xolxutxrol0iasrtmqqrwthudrp/xtbC6giTXmnkd4gNVgAA3G","X-Spam-Status":"No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tFREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY\n\tautolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"},"content":"This series improves ext4 mballoc statistics in two small ways.\n\nThe first patch adds blocks_allocated to /proc/fs/ext4//mb_stats,\nso that the proc output covers the same mballoc summary counters\nprinted at unmount time.\n\nThe second patch makes /proc/fs/ext4//mb_stats writable\nand allows writing 0 to clear the current runtime mballoc statistics.\n\nChanges since v1: \n - Split blocks_allocated reporting and statistics clearing into two patches\n - Drop the separate mb_stats_clear sysfs node\n - Make /proc/fs/ext4//mb_stats writable instead\n\nBaolin Liu (2):\n ext4: add blocks_allocated to mb_stats output\n ext4: allow clearing mballoc stats through mb_stats\n\n fs/ext4/ext4.h | 1 +\n fs/ext4/mballoc.c | 31 +++++++++++++++++++++++++++++++\n fs/ext4/sysfs.c | 40 ++++++++++++++++++++++++++++++++++++++--\n 3 files changed, 70 insertions(+), 2 deletions(-)"}