It doesn't really make sense to do selective polling because we never care about specific IOs. Non selective polling can actually help by doing some useful work while we're submitting a command. We ask for a batch of (magic) 4 completions which looks like a decent network<->backend proportion, if less are available we'll see less. Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx> --- drivers/target/target_core_iblock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index d316ed537d59..00726b6e51c4 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -757,6 +757,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, } iblock_submit_bios(&list); + blk_mq_poll_batch(bdev_get_queue(IBLOCK_DEV(dev)->ibd_bd), 4); iblock_complete_cmd(cmd); return 0; -- 2.7.4
