From: Liao Chen <liaochen4@huawei.com>
Date: Tue, 20 Aug 2024 02:20:29 +0000 (+0000)
Subject: zonefs: add support for FS_IOC_GETFSSYSFSPATH
X-Git-Tag: v6.12-rc2~41^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c4b3c1332f55c48785e6661cebeb7269a92a45fd;p=thirdparty%2Fkernel%2Flinux.git

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@huawei.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---

diff --git a/fs/zonefs/sysfs.c b/fs/zonefs/sysfs.c
index 8ccb65c2b419f..ff9a688f1f9cf 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);