On Tue, Dec 08, 2020 at 08:38:59PM +1100, Stephen Rothwell wrote: > Hi all, > > On Tue, 8 Dec 2020 20:28:53 +1100 Stephen Rothwell <s...@canb.auug.org.au> > wrote: > > > > Hi all, > > > > After merging the scsi-mkp tree, today's linux-next build (sparc64 > > defconfig) failed like this: > > > > drivers/mtd/nand/raw/intel-nand-controller.c:17:10: fatal error: > > linux/mtd/nand_ecc.h: No such file or directory > > 17 | #include <linux/mtd/nand_ecc.h> > > | ^~~~~~~~~~~~~~~~~~~~~~ > > Clearly, it did not fail like that :-) > > block/blk-core.c: In function 'blk_queue_enter': > block/blk-core.c:443:18: error: 'struct request_queue' has no member named > 'rpm_status'; did you mean 'stats'? > if ((pm && q->rpm_status != RPM_SUSPENDED) || > ^~~~~~~~~~ > stats > > > Caused by commit > > > > 81a395cdc176 ("scsi: block: Do not accept any requests while suspended") > > > > # CONFIG_PM is not set > > > > I have applied the following patch: > > > > From: Stephen Rothwell <s...@canb.auug.org.au> > > Date: Tue, 8 Dec 2020 20:12:33 +1100 > > Subject: [PATCH] scsi: block: fix for "scsi: block: Do not accept any > > requests while suspended" > > > > Fixes: 81a395cdc176 ("scsi: block: Do not accept any requests while > > suspended") > > Signed-off-by: Stephen Rothwell <s...@canb.auug.org.au> > > --- > > block/blk-core.c | 18 ++++++++++++++---- > > 1 file changed, 14 insertions(+), 4 deletions(-) > > > > diff --git a/block/blk-core.c b/block/blk-core.c > > index a71a5c9429d6..9c9aec1382be 100644 > > --- a/block/blk-core.c > > +++ b/block/blk-core.c > > @@ -421,6 +421,18 @@ void blk_cleanup_queue(struct request_queue *q) > > } > > EXPORT_SYMBOL(blk_cleanup_queue); > > > > +#ifdef CONFIG_PM > > +static bool rq_suspended(struct request_queue *q) > > +{ > > + return q->rpm_status == RPM_SUSPENDED; > > +} > > +#else > > +static bool rq_suspended(struct request_queue *q) > > +{ > > + return false; > > +} > > +#endif > > + > > /** > > * blk_queue_enter() - try to increase q->q_usage_counter > > * @q: request queue pointer > > @@ -440,12 +452,10 @@ int blk_queue_enter(struct request_queue *q, > > blk_mq_req_flags_t flags) > > * responsible for ensuring that that counter is > > * globally visible before the queue is unfrozen. > > */ > > - if ((pm && q->rpm_status != RPM_SUSPENDED) || > > - !blk_queue_pm_only(q)) { > > + if ((pm && !rq_suspended(q)) || !blk_queue_pm_only(q)) > > success = true; > > - } else { > > + else > > percpu_ref_put(&q->q_usage_counter); > > - } > > } > > rcu_read_unlock();
Yes, that certainly is the proper fix. It's all to easy to miss these issues that depend on your kernel configuration. Bart, can you fold it into a new version of the patch? Alan Stern