Re: [PATCH 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

Hi Roman, [auto build test WARNING on block/for-next] [also build test WARNING on v4.7 next-20160805] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Roman-Pen/blk-mq-fix-hang-caused-by-freeze-un

Re: [PATCH 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

Hi Roman, [auto build test WARNING on block/for-next] [also build test WARNING on v4.7 next-20160805] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Roman-Pen/blk-mq-fix-hang-caused-by-freeze-un

Re: [PATCH 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

Hi Roman, [auto build test ERROR on block/for-next] [also build test ERROR on v4.7 next-20160805] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Roman-Pen/blk-mq-fix-hang-caused-by-freeze-unfree

[PATCH 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

Long time ago there was a similar fix proposed by Akinobu Mita[1], but it seems that time everyone decided to fix this subtle race in percpu-refcount and Tejun Heo[2] did an attempt (as I can see that patchset was not applied). The following is a description of a queue hang - same fix but a bug fr