On Fri, Jun 10, 2016 at 01:37:17PM +0200, Hannes Reinecke wrote: > Hmm. So everybody is suffering because someone _might_ be using bio_clone? > Why can't we fixup bio_clone() (or the callers of which) to correctly > set the queue limits?
The only one suffering is bcache. Everyone else uses bios below the block layer arbitrary max size. The fixup to allow bio_clone support a larger size is the same one as to allow everyone else submitting larger bios: increase BIO_MAX_PAGES and create the required mempools to back that new larger size. Or just go for multipage biovecs..
