errorfc
errorfc(fc, "Unable to register fscache cookie for %s", name);
errorfc(fc, "Can't set test_dummy_encryption on remount");
errorfc(fc, "Conflicting test_dummy_encryption options");
errorfc(fc, "wrong endianness");
errorfc(fc, "wrong endianness");
errorfc(fc, "wrong magic");
errorfc(fc, "unsupported filesystem features");
errorfc(fc, "root is not a directory");
errorfc(fc, "bad root offset %lu", root_offset);
errorfc(fc, "dax options not supported");
errorfc(fc, "{,no}user_xattr options not supported");
errorfc(fc, "{,no}acl options not supported");
errorfc(fc, "compression not supported, cache_strategy ignored");
errorfc(fc, "%s option not supported", erofs_fs_parameters[opt].name);
errorfc(fc, "%s option not supported", erofs_fs_parameters[opt].name);
errorfc(fc, "%s option not supported", erofs_fs_parameters[opt].name);
errorfc(fc, "domain_id is needed when inode_ishare is on");
errorfc(fc, "FSDAX is not allowed when inode_ishare is on");
errorfc(fc, "failed to set initial blksize");
errorfc(fc, "failed to set erofs blksize");
errorfc(fc, "reconfiguration of locking protocol not allowed");
errorfc(fc, "reconfiguration of lock table not allowed");
errorfc(fc, "reconfiguration of host data not allowed");
errorfc(fc, "reconfiguration of spectator mode not allowed");
errorfc(fc, "reconfiguration of localflocks not allowed");
errorfc(fc, "switching between gfs2 and gfs2meta not allowed");
errorfc(fc, "unable to remount read-write");
errorfc(fc, "could not get file from pidns argument");
errorfc(fc, "insufficient permissions to set pidns");
errorfc(fc, "cannot reconfigure pidns for existing procfs");
errorfc(fc, "pidns mount flag not supported on this system");
errorfc(fc, "VFS: Mounting from non-initial user namespace is not allowed");
#define invalfc(fc, fmt, ...) (errorfc(fc, fmt, ## __VA_ARGS__), -EINVAL)
errorfc(fc, "option or name mismatch, new: 0x%x \"%s\", old: 0x%x \"%s\"",