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-unfreeze-sequence/20160806-014441 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: tile-allyesconfig (attached as .config) compiler: tilegx-linux-gcc (GCC) 4.6.2 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=tile All warnings (new ones prefixed by >>): block/blk-core.c: In function 'blk_queue_enter': >> block/blk-core.c:660:3: warning: passing argument 1 of 'atomic_read' from incompatible pointer type [enabled by default] arch/tile/include/asm/atomic.h:35:19: note: expected 'const struct atomic_t *' but argument is of type 'int *' >> block/blk-core.c:660:3: warning: passing argument 1 of 'atomic_read' from incompatible pointer type [enabled by default] arch/tile/include/asm/atomic.h:35:19: note: expected 'const struct atomic_t *' but argument is of type 'int *' vim +/atomic_read +660 block/blk-core.c ^1da177e drivers/block/ll_rw_blk.c Linus Torvalds 2005-04-16 644 { c304a51b block/blk-core.c Ezequiel Garcia 2012-11-10 645 return blk_alloc_queue_node(gfp_mask, NUMA_NO_NODE); 1946089a drivers/block/ll_rw_blk.c Christoph Lameter 2005-06-23 646 } 1946089a drivers/block/ll_rw_blk.c Christoph Lameter 2005-06-23 647 EXPORT_SYMBOL(blk_alloc_queue); ^1da177e drivers/block/ll_rw_blk.c Linus Torvalds 2005-04-16 648 6f3b0e8b block/blk-core.c Christoph Hellwig 2015-11-26 649 int blk_queue_enter(struct request_queue *q, bool nowait) 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 650 { 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 651 while (true) { 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 652 int ret; 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 653 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 654 if (percpu_ref_tryget_live(&q->q_usage_counter)) 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 655 return 0; 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 656 6f3b0e8b block/blk-core.c Christoph Hellwig 2015-11-26 657 if (nowait) 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 658 return -EBUSY; 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 659 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 @660 ret = wait_event_interruptible(q->mq_freeze_wq, 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 661 !atomic_read(&q->mq_freeze_depth) || 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 662 blk_queue_dying(q)); 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 663 if (blk_queue_dying(q)) 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 664 return -ENODEV; 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 665 if (ret) 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 666 return ret; 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 667 } 3ef28e83 block/blk-core.c Dan Williams 2015-10-21 668 } :::::: The code at line 660 was first introduced by commit :::::: 3ef28e83ab15799742e55fd13243a5f678b04242 block: generic request_queue reference counting :::::: TO: Dan Williams <dan.j.williams@xxxxxxxxx> :::::: CC: Jens Axboe <axboe@xxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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