On Wed, Nov 04, 2015 at 04:07:57PM -0600, mchristi@xxxxxxxxxx wrote: > Known issues: > - REQ_FLUSH is still a flag, but should probably be a operation. > For lower level drivers like SCSI where we only get a flush, it makes > more sense to be a operation. However, upper layers like filesystems > can send down flushes with writes, so it is more of a flag for them. > I am still working on this. Actually it should be both. REQ_OP_FLUSH for a real flush operation, and a REQ_PREFLUSH bio flag that the request layer will sequence into an actual write an a flush operation. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
