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684b290abc
FS_IOC_GETFSSYSFSPATH ioctl exposes /sys/fs path of a given filesystem, potentially standarizing sysfs reporting. This patch add support for FS_IOC_GETFSSYSFSPATH for erofs, "erofs/<dev>" will be outputted for bdev cases, "erofs/[domain_id,]<fs_id>" will be outputted for fscache cases. Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com> Link: https://lore.kernel.org/r/20240720082335.441563-1-huangxiaojia2@huawei.com Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>