On 2021/06/02 21:29, Changheun Lee wrote: > Set max_bio_bytes same with queue max sectors. It will lead to fast bio > submit when bio size is over than queue max sectors. And it might be helpful > to align submit bio size in some case. > > Signed-off-by: Changheun Lee <nanich.lee@xxxxxxxxxxx> > --- > drivers/scsi/scsi_lib.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index 532304d42f00..f6269268b0e0 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1837,6 +1837,8 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q) > blk_queue_virt_boundary(q, shost->virt_boundary_mask); > dma_set_max_seg_size(dev, queue_max_segment_size(q)); > > + blk_queue_max_bio_bytes(q, queue_max_sectors(q)); Doing this unconditionally for all scsi block devices is probably not a good idea. Cannot this be moved to the LLD handling the devices that actually need it ? > + > /* > * Set a reasonable default alignment: The larger of 32-byte (dword), > * which is a common minimum for HBAs, and the minimum DMA alignment, > -- Damien Le Moal Western Digital Research
