> The comment in blkif.h contains: > > /* Operation not supported (only happens on barrier writes). */ > #define BLKIF_RSP_EOPNOTSUPP -2 > > So in principle BLKIF_RSP_EOPNOTSUPP is only to be used as a response > for BLKIF_OP_WRITE_BARRIER or BLKIF_OP_FLUSH_DISKCACHE requests, > however blkback already uses it as a response to unknown request > types (like you propose here). > > Would you mind also sending a patch to adjust blkif.h in Xen to remove > the "(only happens on barrier writes)" part of the comment?
Sure, no problem
