Close is annotated as a blocking syscall in http://golang.org/src/pkg/syscall/syscall_linux.go#L810 http://golang.org/src/pkg/syscall/syscall_linux.go#L810 Is

Close is annotated as a blocking syscall in http://golang.org/src/pkg/syscall/syscall_linux.go#L810 http://golang.org/src/pkg/syscall/syscall_linux.go#L810 Is there a guarantee on Linux that close can't block? (I suppose it depends on the file type and the definition of blocking.)