On Fri, Oct 16, 2020 at 08:19:41AM +0100, Christoph Hellwig wrote: > On Thu, Oct 15, 2020 at 09:46:30PM +0000, Satya Tangirala wrote: > > Add a (void *) pointer to struct keyslot_manager that the owner of the > > struct can use for any purpose it wants. > > > > Right now, the struct keyslot_manager is expected to be embedded directly > > into other structs (and the owner of the keyslot_manager would use > > container_of() to access any other data the owner needs). However, this > > might take up more space than is acceptable, and it would be better to be > > able to add only a pointer to a struct keyslot_manager into other structs > > rather than embed the entire struct directly. But container_of() can't be > > used when only the pointer to the keyslot_manager is embded. The primary > > motivation of this patch is to get around that issue. > > No, please don't bloat the structure. If some weird caller doesn't > like the embedding it can create a container structure with the > blk_keyslot_manager structure and a backpointer. Ah, ok. Thanks! -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
