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zonefs: add support for FS_IOC_GETFSSYSFSPATH

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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>
This commit is contained in:
Liao Chen 2024-08-20 02:20:29 +00:00 committed by Damien Le Moal
parent 47ac09b91b
commit c4b3c1332f
1 changed files with 1 additions and 0 deletions
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fs/zonefs/sysfs.c
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@ -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);