On Tue, May 25, 2021 at 11:25:32AM +0900, Damien Le Moal wrote: > Fix dm_accept_partial_bio() to actually check that zone management > commands are not passed as explained in the function documentation > comment. Also, since a zone append operation cannot be split, add > REQ_OP_ZONE_APPEND as a forbidden command. > > White lines are added around the group of BUG_ON() calls to make the > code more legible. > > Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> > Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> > Reviewed-by: Hannes Reinecke <hare@xxxxxxx> > --- > drivers/md/dm.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/md/dm.c b/drivers/md/dm.c > index ca2aedd8ee7d..a9211575bfed 100644 > --- a/drivers/md/dm.c > +++ b/drivers/md/dm.c > @@ -1237,8 +1237,9 @@ static int dm_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff, > > /* > * A target may call dm_accept_partial_bio only from the map routine. It is > - * allowed for all bio types except REQ_PREFLUSH, REQ_OP_ZONE_RESET, > - * REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH. > + * allowed for all bio types except REQ_PREFLUSH, zone management operations > + * (REQ_OP_ZONE_RESET, REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and > + * REQ_OP_ZONE_FINISH) and zone append writes. Maybe shorten the REQ_OP_ZONE_* list to just say REQ_OP_ZONE_* ?
