Even better, is to encapsulate your file operation...

# coroutines

[elizarov]

Even better, is to encapsulate your file operations into suspending functions, hiding all this run invocations from the actual logic:

suspend fun doSomeFileOp() = run(fileContext) { 
   // some blocking file-manipulating code here
}

Now, if you place all this file ops into a separate MyFileOps.kt file, you can make fileContext private to that file and the encapsulation will be total.