On 9/1/20 9:11 PM, Ming Lei wrote: > On Tue, Aug 25, 2020 at 10:17:32PM +0800, Ming Lei wrote: >> Hi Jens, >> >> The 1st patch add .mq_quiesce_mutex for serializing quiesce/unquiesce, >> and prepares for replacing srcu with percpu_ref. >> >> The 2nd patch replaces srcu with percpu_ref. >> >> V2: >> - add .mq_quiesce_lock >> - add comment on patch 2 wrt. handling hctx_lock() failure >> - trivial patch style change >> >> >> Ming Lei (2): >> blk-mq: serialize queue quiesce and unquiesce by mutex >> blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING >> >> block/blk-core.c | 2 + >> block/blk-mq-sysfs.c | 2 - >> block/blk-mq.c | 125 +++++++++++++++++++++++------------------ >> block/blk-sysfs.c | 6 +- >> include/linux/blk-mq.h | 7 --- >> include/linux/blkdev.h | 6 ++ >> 6 files changed, 82 insertions(+), 66 deletions(-) >> >> Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx> >> Cc: Paul E. McKenney <paulmck@xxxxxxxxxx> >> Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx> >> Cc: Sagi Grimberg <sagi@xxxxxxxxxxx> >> Cc: Bart Van Assche <bvanassche@xxxxxxx> >> Cc: Johannes Thumshirn <Johannes.Thumshirn@xxxxxxx> >> Cc: Chao Leng <lengchao@xxxxxxxxxx> >> Cc: Christoph Hellwig <hch@xxxxxx> > > Hello Guys, > > Is there any objections on the two patches? If not, I'd suggest to move> on. Seems like the nested case is one that should either be handled, or at least detected. -- Jens Axboe
