> On 6/3/21 10:03 PM, Changheun Lee wrote: > > bio size can grow up to 4GB after muli-page bvec has been enabled. > > But sometimes large size of bio would lead to inefficient behaviors. > > Control of bio max size will be helpful to improve inefficiency. > > > > blk_queue_max_bio_bytes() is added to enable be set the max_bio_bytes in > > each driver layer. And max_bio_bytes sysfs is added to show current > > max_bio_bytes for each request queue. > > bio size can be controlled via max_bio_bytes. > > Where is the version history for this patch series? Sorry. I didn't know about it. I'll do next. Thank you for advise. > > Has this patch series been tested in combination with dm-crypt? This patch has been tested in android device. And dm-crypt on the top of scsi has tested with below scsi modification in VM too. @@ -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) << SECTOR_SHIFT); + /* * Set a reasonable default alignment: The larger of 32-byte (dword), * which is a common minimum for HBAs, and the minimum DMA alignment, > > Bart. > Thank you, Changheun Lee
