[Feature request]: add option to dd to issue ioctl(BLKFLSBUF) on output descriptior after each write or at the end
I already has sent a message about fsync/fdatasync after each write. It seems that ioctl(BLKFLSBUF) need be implemented in same semantics. in oflags and conv i.e. ioctl after each write oflags=blkflsbuf and ioctl at the end, if specified in conv=blkflsbuf -- Segmentation fault
