40 static std::string PartitionParent(const std::string& blockdev) {  in PartitionParent()  argument
41     if (blockdev.find('/') != std::string::npos) {  in PartitionParent()
42         LOG(ERROR) << __func__ << ": invalid argument " << blockdev;  in PartitionParent()
43         return blockdev;  in PartitionParent()
47         return blockdev;  in PartitionParent()
53         std::string path = StringPrintf("/sys/class/block/%s/%s", ent->d_name, blockdev.c_str());  in PartitionParent()
59     return blockdev;  in PartitionParent()
94     std::string blockdev = "/dev/block/" + BlockdevName(statbuf.st_dev);  in BlockDeviceQueueDepth()  local
95     LOG(DEBUG) << __func__ << ": " << file_path << " -> " << blockdev;  in BlockDeviceQueueDepth()
96     if (blockdev.empty()) {  in BlockDeviceQueueDepth()
104         std::optional<std::string> child = dm.GetParentBlockDeviceByPath(blockdev);  in BlockDeviceQueueDepth()
108         LOG(DEBUG) << __func__ << ": " << blockdev << " -> " << *child;  in BlockDeviceQueueDepth()
109         blockdev = *child;  in BlockDeviceQueueDepth()
111     std::optional<std::string> maybe_blockdev = android::dm::ExtractBlockDeviceName(blockdev);  in BlockDeviceQueueDepth()
113         return ResultError("Failed to remove /dev/block/ prefix from " + blockdev, 0);  in BlockDeviceQueueDepth()
115     blockdev = PartitionParent(*maybe_blockdev);  in BlockDeviceQueueDepth()
117                << "Partition parent: " << blockdev;  in BlockDeviceQueueDepth()
119             StringPrintf("/sys/class/block/%s/mq/0/nr_tags", blockdev.c_str());  in BlockDeviceQueueDepth()
125     LOG(DEBUG) << __func__ << ": " << file_path << " is backed by /dev/" << blockdev  in BlockDeviceQueueDepth()