linux-kernel - [PATCH -next v2] zonefs: add support for FS_IOC

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Message-ID: <20240820022029.8261-1-liaochen4@huawei.com>
Date: Tue, 20 Aug 2024 02:20:29 +0000
From: Liao Chen <liaochen4@...wei.com>
To: <linux-fsdevel@...r.kernel.org>
CC: <linux-kernel@...r.kernel.org>, <dlemoal@...nel.org>,
	<naohiro.aota@....com>, <jth@...nel.org>
Subject: [PATCH -next v2] zonefs: add support for FS_IOC_GETFSSYSFSPATH

FS_IOC_GETFSSYSFSPATH ioctl expects sysfs sub-path of a filesystem, the
format can be "$FSTYP/$SYSFS_IDENTIFIER" under /sys/fs, it can helps to
standardizes exporting sysfs datas across filesystems.

This patch wires up FS_IOC_GETFSSYSFSPATH for zonefs, it will output
"zonefs/<dev>".

Signed-off-by: Liao Chen <liaochen4@...wei.com>
---
 fs/zonefs/sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/zonefs/sysfs.c b/fs/zonefs/sysfs.c
index 8ccb65c2b419..ff9a688f1f9c 100644
--- a/fs/zonefs/sysfs.c
+++ b/fs/zonefs/sysfs.c
@@ -92,6 +92,7 @@ int zonefs_sysfs_register(struct super_block *sb)
 	struct zonefs_sb_info *sbi = ZONEFS_SB(sb);
 	int ret;
 
+	super_set_sysfs_name_id(sb);
 	init_completion(&sbi->s_kobj_unregister);
 	ret = kobject_init_and_add(&sbi->s_kobj, &zonefs_sb_ktype,
 				   zonefs_sysfs_root, "%s", sb->s_id);
-- 
2.34.1