On Thu, Nov 24, 2016 at 08:47:41PM +0100, Fabian Frederick wrote: > data=journal mount option should disable O_DIRECT access > (See Documentation/filesystems/ext4.txt) but open operations > using O_CREAT|O_RDWR|O_DIRECT|O_SYNC have no warning in return and file is > being > created. This patch adds vfs super_operations compatibility flag function > returning -EPERM in such a case.
Why not simply check it in ->open()? Occam's Razor and all such...
