| Message ID | 1492717621-9042-1-git-send-email-jbacik@fb.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 04/20/2017 01:47 PM, Josef Bacik wrote: > I lack the basic understanding of what segments mean, so we were being > limited to 512kib requests even with higher max_sectors sizes set. > Setting the maximum number of segments to unlimited allows us to > actually have arbitrarily large IO's go through NBD. Applied for 4.12, thanks Josef.
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 6e592c2..76e5f8f 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -1470,6 +1470,7 @@ static int nbd_dev_add(int index) disk->queue->limits.discard_granularity = 512; blk_queue_max_discard_sectors(disk->queue, UINT_MAX); blk_queue_max_segment_size(disk->queue, UINT_MAX); + blk_queue_max_segments(disk->queue, USHRT_MAX); blk_queue_max_hw_sectors(disk->queue, 65536); disk->queue->limits.max_sectors = 256;
I lack the basic understanding of what segments mean, so we were being limited to 512kib requests even with higher max_sectors sizes set. Setting the maximum number of segments to unlimited allows us to actually have arbitrarily large IO's go through NBD. Signed-off-by: Josef Bacik <jbacik@fb.com> --- drivers/block/nbd.c | 1 + 1 file changed, 1 insertion(+)