> int (*startwrite)(struct mddev *mddev, sector_t offset, > - unsigned long sectors); > + unsigned long sectors, bool is_discard); > void (*endwrite)(struct mddev *mddev, sector_t offset, > - unsigned long sectors); > + unsigned long sectors, bool is_discard); a bool discard is not a very good interface. I'd expect an op enum or a set of flag to properly describe it. But is start/end write really the right interface for discard or should it have it's own set of ops?
