elevator "none" check is reverses, regression from commit d1d7e2689db9e ("cstyle: Resolve C style issues")

[ColinIanKing]

Commit commit d1d7e26 ("cstyle: Resolve C style issues") while cleaning up style warnings broke the none elevator comparison in module/zfs/vdev_disk.c, vdev_elevator_switch():

•   if (!strncmp(elevator, "none", 4) && (strlen(elevator) == 4))
  

•   if (strncmp(elevator, "none", 4) && (strlen(elevator) == 4) == 0)
  

The code no longer returns 0 when elevator == "none".

[behlendorf]

Indeed it did. Please open a PR to revert this change in a fashion make cstyle is happy with so we can resolve this.

[ColinIanKing]

I'm unfamiliar with the process here, not sure what you mean by "open a PR".

[drescherjm]

PR = Pull Request.

[behlendorf]

Github shorthand for a pull request. If you can create a new one with a tiny fix for this it'll be easy to get it reviewed, merged, and attributed properly.