On Fri, May 20, 2016 at 06:56:27PM +0200, Daniel Golle wrote: > The musl libc [1] apparently doesn't support O_DIRECT. > Alpine Linux [2], LEDE [3] and OpenWrt [4] are affected. So that's still widespread enough that we need to continue to support this and should probably add it to our upstream test matrix. Alasdair