On Mon, Dec 11 2023 at 3:59P -0500, Hongyu Jin <[email protected]> wrote:
> From: Hongyu Jin <[email protected]> > > Current call bio_set_ioprio() for each cloned bio and splited bio, > and the io priority can't be passed to module that implement > struct gendisk::fops::submit_bio, such as device-mapper. > > Move bio_set_ioprio() into submit_bio(), only call bio_set_ioprio() > once set the priority of origin bio, cloned and splited bio > auto inherit the priority of origin bio in clone process. > > Co-developed-by: Yibin Ding <[email protected]> > Signed-off-by: Yibin Ding <[email protected]> > Signed-off-by: Hongyu Jin <[email protected]> This patch's subject needs fixing (this is a fix, not an optimization) and the header needs fixing (various issues that make it hard to read). This should also be tagged with: Fixes: a78418e6a04c9 ("block: Always initialize bio IO priority on submit") (commit 82b74cac28493 was commit immediately prior that placed the direct call incorrectly) Reviewed-by: Mike Snitzer <[email protected]> > --- > block/blk-core.c | 10 ++++++++++ > block/blk-mq.c | 11 ----------- > 2 files changed, 10 insertions(+), 11 deletions(-) > > diff --git a/block/blk-core.c b/block/blk-core.c > index fdf25b8d6e78..68158c327aea 100644 > --- a/block/blk-core.c > +++ b/block/blk-core.c > @@ -49,6 +49,7 @@ > #include "blk-pm.h" > #include "blk-cgroup.h" > #include "blk-throttle.h" > +#include "blk-ioprio.h" > > struct dentry *blk_debugfs_root; > > @@ -809,6 +810,14 @@ void submit_bio_noacct(struct bio *bio) > } > EXPORT_SYMBOL(submit_bio_noacct); > > +static void bio_set_ioprio(struct bio *bio) > +{ > + /* Nobody set ioprio so far? Initialize it based on task's nice value */ > + if (IOPRIO_PRIO_CLASS(bio->bi_ioprio) == IOPRIO_CLASS_NONE) > + bio->bi_ioprio = get_current_ioprio(); > + blkcg_set_ioprio(bio); > +} > + > /** > * submit_bio - submit a bio to the block device layer for I/O > * @bio: The &struct bio which describes the I/O > @@ -831,6 +840,7 @@ void submit_bio(struct bio *bio) > count_vm_events(PGPGOUT, bio_sectors(bio)); > } > > + bio_set_ioprio(bio); > submit_bio_noacct(bio); > } > EXPORT_SYMBOL(submit_bio); > diff --git a/block/blk-mq.c b/block/blk-mq.c > index e2d11183f62e..a6e2609df9c9 100644 > --- a/block/blk-mq.c > +++ b/block/blk-mq.c > @@ -40,7 +40,6 @@ > #include "blk-stat.h" > #include "blk-mq-sched.h" > #include "blk-rq-qos.h" > -#include "blk-ioprio.h" > > static DEFINE_PER_CPU(struct llist_head, blk_cpu_done); > static DEFINE_PER_CPU(call_single_data_t, blk_cpu_csd); > @@ -2922,14 +2921,6 @@ static inline struct request > *blk_mq_get_cached_request(struct request_queue *q, > return rq; > } > > -static void bio_set_ioprio(struct bio *bio) > -{ > - /* Nobody set ioprio so far? Initialize it based on task's nice value */ > - if (IOPRIO_PRIO_CLASS(bio->bi_ioprio) == IOPRIO_CLASS_NONE) > - bio->bi_ioprio = get_current_ioprio(); > - blkcg_set_ioprio(bio); > -} > - > /** > * blk_mq_submit_bio - Create and send a request to block device. > * @bio: Bio pointer. > @@ -2963,8 +2954,6 @@ void blk_mq_submit_bio(struct bio *bio) > if (!bio_integrity_prep(bio)) > return; > > - bio_set_ioprio(bio); > - > rq = blk_mq_get_cached_request(q, plug, &bio, nr_segs); > if (!rq) { > if (!bio) > -- > 2.34.1 > >
