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Mon, 11 Jan 2021 07:51:19 +0000 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4DDm8C1WmFz7SfQ; Mon, 11 Jan 2021 15:50:03 +0800 (CST) Received: from szvp000203569.huawei.com (10.120.216.130) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.498.0; Mon, 11 Jan 2021 15:50:52 +0800 From: Chao Yu To: Date: Mon, 11 Jan 2021 15:50:17 +0800 Message-ID: <20210111075017.82370-1-yuchao0@huawei.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-Originating-IP: [10.120.216.130] X-CFilter-Loop: Reflected X-Headers-End: 1kyryn-008SsB-Dl Subject: [f2fs-dev] [PATCH v4 5/5] f2fs: introduce sb_status sysfs node X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: corbet@lwn.net, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Introduce /sys/fs/f2fs//stat/sb_status to show superblock status in real time as a hexadecimal value. value sb status macro description 0x1 SBI_IS_DIRTY, /* dirty flag for checkpoint */ 0x2 SBI_IS_CLOSE, /* specify unmounting */ 0x4 SBI_NEED_FSCK, /* need fsck.f2fs to fix */ 0x8 SBI_POR_DOING, /* recovery is doing or not */ 0x10 SBI_NEED_SB_WRITE, /* need to recover superblock */ 0x20 SBI_NEED_CP, /* need to checkpoint */ 0x40 SBI_IS_SHUTDOWN, /* shutdown by ioctl */ 0x80 SBI_IS_RECOVERED, /* recovered orphan/data */ 0x100 SBI_CP_DISABLED, /* CP was disabled last mount */ 0x200 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ 0x400 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ 0x800 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ 0x1000 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ 0x2000 SBI_IS_RESIZEFS, /* resizefs is in process */ Signed-off-by: Chao Yu --- v4: - fix linux-next build (htmldocs) warning: WARNING: Inline emphasis start-string without end-string. - reformat to fit rendering in html. Documentation/ABI/testing/sysfs-fs-f2fs | 23 +++++++++++++++++++++++ fs/f2fs/sysfs.c | 8 ++++++++ 2 files changed, 31 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 3dfee94e0618..e5918c93f3bf 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -377,3 +377,26 @@ Description: This gives a control to limit the bio size in f2fs. Default is zero, which will follow underlying block layer limit, whereas, if it has a certain bytes value, f2fs won't submit a bio larger than that size. + +What: /sys/fs/f2fs//stat/sb_status +Date: December 2020 +Contact: "Chao Yu" +Description: Show status of f2fs superblock in real time. + + ===== ===================== ================================= + value sb status macro description + 0x1 SBI_IS_DIRTY dirty flag for checkpoint + 0x2 SBI_IS_CLOSE specify unmounting + 0x4 SBI_NEED_FSCK need fsck.f2fs to fix + 0x8 SBI_POR_DOING recovery is doing or not + 0x10 SBI_NEED_SB_WRITE need to recover superblock + 0x20 SBI_NEED_CP need to checkpoint + 0x40 SBI_IS_SHUTDOWN shutdown by ioctl + 0x80 SBI_IS_RECOVERED recovered orphan/data + 0x100 SBI_CP_DISABLED CP was disabled last mount + 0x200 SBI_CP_DISABLED_QUICK CP was disabled quickly + 0x400 SBI_QUOTA_NEED_FLUSH need to flush quota info in CP + 0x800 SBI_QUOTA_SKIP_FLUSH skip flushing quota in current CP + 0x1000 SBI_QUOTA_NEED_REPAIR quota file may be corrupted + 0x2000 SBI_IS_RESIZEFS resizefs is in process + ====== ===================== ================================= diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index bd1174ed2e6f..f39874d512ea 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -96,6 +96,12 @@ static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, sbi->sectors_written_start) >> 1))); } +static ssize_t sb_status_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%lx\n", sbi->s_flag); +} + static ssize_t features_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -702,7 +708,9 @@ static struct attribute *f2fs_feat_attrs[] = { }; ATTRIBUTE_GROUPS(f2fs_feat); +F2FS_GENERAL_RO_ATTR(sb_status); static struct attribute *f2fs_stat_attrs[] = { + ATTR_LIST(sb_status), NULL, }; ATTRIBUTE_GROUPS(f2fs_stat); -- 2.29.2 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel