[PATCH] checklink: degrade gracefully on posix when fs is readonly (issue5511)

[Yuya Nishihara]

On Sun, 21 May 2017 18:39:41 -0400, Augie Fackler wrote:
> # HG changeset patch
> # User Augie Fackler <augie at google.com>
> # Date 1495406188 14400
> #      Sun May 21 18:36:28 2017 -0400
> # Branch stable
> # Node ID 3bb12473b0f69a5f23c384ef45b6d995d6a1c662
> # Parent  99515353c72a4c54e4aac1a2ad4f8f724c7fdc9c
> checklink: degrade gracefully on posix when fs is readonly (issue5511)

Looks good. Queued, thanks.