Readfile System Call Patches Revisited For Efficiently Reading Small Files

Talked about for over two years now has been a "readfile" system call to efficiently read small files. This should be a win when dealing with small files like those exposed via sysfs while it's taken time to come together and stalled out several times. This week Greg Kroah-Hartman has updated the readfile patches leading to hope that this new syscall might finally be on a path for mainlining...