> This > > > + printf("Your filesystem/device > doesn't " > + "support polled IO\n"); > > will print one line in standard output: > > Your filesystem/device doesn't support polled IO > > > Do you mean that you want to grep in the source code ? Yes, like Linus Torvalds complained about years ago: "I've had grep's that fail due to people splitting the actual string etc, which just drives me wild." https://lkml.org/lkml/2009/12/17/229 It's part of the linux kernel coding style (which fio doesn't strictly follow, but generally does): "Statements longer than 80 columns will be broken into sensible chunks, unless exceeding 80 columns significantly increases readability and does not hide information. Descendants are always substantially shorter than the parent and are placed substantially to the right. The same applies to function headers with a long argument list. However, never break user-visible strings such as printk messages, because that breaks the ability to grep for them."