From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F2F3C1550B for ; Thu, 4 Mar 2021 00:17:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1B7A64EEE for ; Thu, 4 Mar 2021 00:17:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231296AbhCCX7n (ORCPT ); Wed, 3 Mar 2021 18:59:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:57014 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235451AbhCCThJ (ORCPT ); Wed, 3 Mar 2021 14:37:09 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D73E264EF0; Wed, 3 Mar 2021 19:28:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1614799696; bh=8Ra0AMNh+KuCsZP9ZA7+W5cqVDNHMmMwTZByG6847LQ=; h=Date:From:To:Subject:References:In-Reply-To:From; b=aCdQ2lhI4R9ZSpnrwjYno/GIfUoYO1enl4eBCq7vBku02IvLiXfv9MSMJUQe5QYqP YsWHU5/eYaz8oV6qFTAu5aXuS7pqp672gmBL+LLZYSl8p54wZ5Pm/TyzGmpDZhqtuf yoGC1EXWp4h4MMrdlr0nfX8laVYhPAVOEjEt3r5XI7RfHslg2fhvOqHYn1Kf6g/1vA 6l03ZXNEfiiFUWLiuTjZ7gGlAxA7/dM/hjyd1W34bLDWcWSn4O1RYT3QUHXH+J05D6 zL/mp4zek9wWs7DF5tYAMXsoClH/ULKW0G+WsA+M8pYjJ3tnTLZYXhSQfdlx++gBl/ hq9oYfSu/m9BA== Date: Wed, 3 Mar 2021 11:28:14 -0800 From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com Subject: Re: [PATCH v2] f2fs: expose # of overprivision segments Message-ID: References: <20210302054233.3886681-1-jaegeuk@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210302054233.3886681-1-jaegeuk@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is useful when checking conditions during checkpoint=disable in Android. Signed-off-by: Jaegeuk Kim --- Documentation/ABI/testing/sysfs-fs-f2fs | 5 +++++ fs/f2fs/sysfs.c | 9 +++++++++ 2 files changed, 14 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 9fa5a528cc23..4aa8f38b52d7 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -409,3 +409,8 @@ Description: Give a way to change checkpoint merge daemon's io priority. I/O priority "3". We can select the class between "rt" and "be", and set the I/O priority within valid range of it. "," delimiter is necessary in between I/O class and priority number. + +What: /sys/fs/f2fs//ovp_segments +Date: March 2021 +Contact: "Jaegeuk Kim" +Description: Shows the number of overprovision segments. diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index e38a7f6921dd..0c391ab2d8b7 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -91,6 +91,13 @@ static ssize_t free_segments_show(struct f2fs_attr *a, (unsigned long long)(free_segments(sbi))); } +static ssize_t ovp_segments_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu\n", + (unsigned long long)(overprovision_segments(sbi))); +} + static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -629,6 +636,7 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag); F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, ckpt_thread_ioprio, ckpt_thread_ioprio); F2FS_GENERAL_RO_ATTR(dirty_segments); F2FS_GENERAL_RO_ATTR(free_segments); +F2FS_GENERAL_RO_ATTR(ovp_segments); F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); F2FS_GENERAL_RO_ATTR(features); F2FS_GENERAL_RO_ATTR(current_reserved_blocks); @@ -715,6 +723,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(ckpt_thread_ioprio), ATTR_LIST(dirty_segments), ATTR_LIST(free_segments), + ATTR_LIST(ovp_segments), ATTR_LIST(unusable), ATTR_LIST(lifetime_write_kbytes), ATTR_LIST(features), -- 2.31.0.rc0.254.gbdcc3b1a9d-goog