On 04/04/2017 08:56 PM, Dmitry Monakhov wrote: > Some ->bi_end_io handlers (for example: pi_verify or decrypt handlers) > need to know original data vector, but after bio traverse io-stack it may > be advanced, splited and relocated many times so it is hard to guess > original iterator. Let's add 'bi_done' conter which accounts number > of bytes iterator was advanced during it's evolution. Later end_io handler > may easily restore original iterator by rewinding iterator to > iter->bi_done. > > Note: this change makes sizeof (struct bvec_iter) multiple to 8 > Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> > --- > include/linux/bio.h | 21 +++++++++++++++++++-- > include/linux/bvec.h | 26 ++++++++++++++++++++++++++ > 2 files changed, 45 insertions(+), 2 deletions(-) > Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)
