Hi Alex, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20201009] [cannot apply to linus/master v5.9-rc8 v5.9-rc7 v5.9-rc6 v5.9-rc8] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Alex-Dewar/bcache-Use-ifdef-instead-of-boolean-variable/20201010-023635 base: d67bc7812221606e1886620a357b13f906814af7 config: x86_64-randconfig-a004-20201009 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4cfc4025cc1433ca5ef1c526053fc9c4bfe64109) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/bb05520ea94f191cdee74e5b7829d0442a05eb86 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Alex-Dewar/bcache-Use-ifdef-instead-of-boolean-variable/20201010-023635 git checkout bb05520ea94f191cdee74e5b7829d0442a05eb86 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/md/bcache/super.c:2563:25: warning: ISO C90 forbids mixing declarations and code [-Wdeclaration-after-statement] struct async_reg_args *args = ^ 1 warning generated. vim +2563 drivers/md/bcache/super.c 9e23ccf8f0a22e Coly Li 2020-05-27 2497 cafe563591446c Kent Overstreet 2013-03-23 2498 static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr, cafe563591446c Kent Overstreet 2013-03-23 2499 const char *buffer, size_t size) cafe563591446c Kent Overstreet 2013-03-23 2500 { 50246693f81fe8 Christoph Hellwig 2020-01-24 2501 const char *err; 29cda393bcaad1 Coly Li 2020-01-24 2502 char *path = NULL; 50246693f81fe8 Christoph Hellwig 2020-01-24 2503 struct cache_sb *sb; cfa0c56db9c087 Christoph Hellwig 2020-01-24 2504 struct cache_sb_disk *sb_disk; fc8f19cc5dce18 Christoph Hellwig 2020-01-24 2505 struct block_device *bdev; 50246693f81fe8 Christoph Hellwig 2020-01-24 2506 ssize_t ret; cafe563591446c Kent Overstreet 2013-03-23 2507 50246693f81fe8 Christoph Hellwig 2020-01-24 2508 ret = -EBUSY; 29cda393bcaad1 Coly Li 2020-01-24 2509 err = "failed to reference bcache module"; cafe563591446c Kent Overstreet 2013-03-23 2510 if (!try_module_get(THIS_MODULE)) 50246693f81fe8 Christoph Hellwig 2020-01-24 2511 goto out; cafe563591446c Kent Overstreet 2013-03-23 2512 a59ff6ccc2bf2e Coly Li 2019-06-28 2513 /* For latest state of bcache_is_reboot */ a59ff6ccc2bf2e Coly Li 2019-06-28 2514 smp_mb(); 29cda393bcaad1 Coly Li 2020-01-24 2515 err = "bcache is in reboot"; a59ff6ccc2bf2e Coly Li 2019-06-28 2516 if (bcache_is_reboot) 50246693f81fe8 Christoph Hellwig 2020-01-24 2517 goto out_module_put; a59ff6ccc2bf2e Coly Li 2019-06-28 2518 50246693f81fe8 Christoph Hellwig 2020-01-24 2519 ret = -ENOMEM; 50246693f81fe8 Christoph Hellwig 2020-01-24 2520 err = "cannot allocate memory"; a56489d4b3c914 Florian Schmaus 2018-07-26 2521 path = kstrndup(buffer, size, GFP_KERNEL); a56489d4b3c914 Florian Schmaus 2018-07-26 2522 if (!path) 50246693f81fe8 Christoph Hellwig 2020-01-24 2523 goto out_module_put; a56489d4b3c914 Florian Schmaus 2018-07-26 2524 a56489d4b3c914 Florian Schmaus 2018-07-26 2525 sb = kmalloc(sizeof(struct cache_sb), GFP_KERNEL); a56489d4b3c914 Florian Schmaus 2018-07-26 2526 if (!sb) 50246693f81fe8 Christoph Hellwig 2020-01-24 2527 goto out_free_path; cafe563591446c Kent Overstreet 2013-03-23 2528 50246693f81fe8 Christoph Hellwig 2020-01-24 2529 ret = -EINVAL; cafe563591446c Kent Overstreet 2013-03-23 2530 err = "failed to open device"; cafe563591446c Kent Overstreet 2013-03-23 2531 bdev = blkdev_get_by_path(strim(path), cafe563591446c Kent Overstreet 2013-03-23 2532 FMODE_READ|FMODE_WRITE|FMODE_EXCL, cafe563591446c Kent Overstreet 2013-03-23 2533 sb); f59fce847fc848 Kent Overstreet 2013-05-15 2534 if (IS_ERR(bdev)) { a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2535 if (bdev == ERR_PTR(-EBUSY)) { a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2536 bdev = lookup_bdev(strim(path)); 789d21dbd9d888 Jianjian Huo 2014-07-13 2537 mutex_lock(&bch_register_lock); a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2538 if (!IS_ERR(bdev) && bch_is_open(bdev)) a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2539 err = "device already registered"; a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2540 else cafe563591446c Kent Overstreet 2013-03-23 2541 err = "device busy"; 789d21dbd9d888 Jianjian Huo 2014-07-13 2542 mutex_unlock(&bch_register_lock); 4b758df21ee708 Jan Kara 2017-09-06 2543 if (!IS_ERR(bdev)) 4b758df21ee708 Jan Kara 2017-09-06 2544 bdput(bdev); d7076f21629f8f Gabriel de Perthuis 2015-11-29 2545 if (attr == &ksysfs_register_quiet) 50246693f81fe8 Christoph Hellwig 2020-01-24 2546 goto done; a9dd53adbb84c1 Gabriel de Perthuis 2013-05-04 2547 } 50246693f81fe8 Christoph Hellwig 2020-01-24 2548 goto out_free_sb; f59fce847fc848 Kent Overstreet 2013-05-15 2549 } f59fce847fc848 Kent Overstreet 2013-05-15 2550 f59fce847fc848 Kent Overstreet 2013-05-15 2551 err = "failed to set blocksize"; f59fce847fc848 Kent Overstreet 2013-05-15 2552 if (set_blocksize(bdev, 4096)) 50246693f81fe8 Christoph Hellwig 2020-01-24 2553 goto out_blkdev_put; cafe563591446c Kent Overstreet 2013-03-23 2554 cfa0c56db9c087 Christoph Hellwig 2020-01-24 2555 err = read_super(sb, bdev, &sb_disk); cafe563591446c Kent Overstreet 2013-03-23 2556 if (err) 50246693f81fe8 Christoph Hellwig 2020-01-24 2557 goto out_blkdev_put; cafe563591446c Kent Overstreet 2013-03-23 2558 cc40daf91bdddb Tang Junhui 2018-03-05 2559 err = "failed to register device"; a58e88bfdc4d52 Coly Li 2020-10-01 2560 bb05520ea94f19 Alex Dewar 2020-10-09 2561 #ifdef CONFIG_BCACHE_ASYNC_REGISTRATION 9e23ccf8f0a22e Coly Li 2020-05-27 2562 /* register in asynchronous way */ 9e23ccf8f0a22e Coly Li 2020-05-27 @2563 struct async_reg_args *args = 9e23ccf8f0a22e Coly Li 2020-05-27 2564 kzalloc(sizeof(struct async_reg_args), GFP_KERNEL); 9e23ccf8f0a22e Coly Li 2020-05-27 2565 9e23ccf8f0a22e Coly Li 2020-05-27 2566 if (!args) { 9e23ccf8f0a22e Coly Li 2020-05-27 2567 ret = -ENOMEM; 9e23ccf8f0a22e Coly Li 2020-05-27 2568 err = "cannot allocate memory"; 9e23ccf8f0a22e Coly Li 2020-05-27 2569 goto out_put_sb_page; 9e23ccf8f0a22e Coly Li 2020-05-27 2570 } 9e23ccf8f0a22e Coly Li 2020-05-27 2571 9e23ccf8f0a22e Coly Li 2020-05-27 2572 args->path = path; 9e23ccf8f0a22e Coly Li 2020-05-27 2573 args->sb = sb; 9e23ccf8f0a22e Coly Li 2020-05-27 2574 args->sb_disk = sb_disk; 9e23ccf8f0a22e Coly Li 2020-05-27 2575 args->bdev = bdev; 9e23ccf8f0a22e Coly Li 2020-05-27 2576 register_device_aync(args); 9e23ccf8f0a22e Coly Li 2020-05-27 2577 /* No wait and returns to user space */ bb05520ea94f19 Alex Dewar 2020-10-09 2578 return size; bb05520ea94f19 Alex Dewar 2020-10-09 2579 #else 2903381fce7100 Kent Overstreet 2013-04-11 2580 if (SB_IS_BDEV(sb)) { cafe563591446c Kent Overstreet 2013-03-23 2581 struct cached_dev *dc = kzalloc(sizeof(*dc), GFP_KERNEL); 1fae7cf05293d3 Coly Li 2018-08-11 2582 f59fce847fc848 Kent Overstreet 2013-05-15 2583 if (!dc) 50246693f81fe8 Christoph Hellwig 2020-01-24 2584 goto out_put_sb_page; cafe563591446c Kent Overstreet 2013-03-23 2585 4fa03402cda2fa Kent Overstreet 2014-03-17 2586 mutex_lock(&bch_register_lock); cfa0c56db9c087 Christoph Hellwig 2020-01-24 2587 ret = register_bdev(sb, sb_disk, bdev, dc); 4fa03402cda2fa Kent Overstreet 2014-03-17 2588 mutex_unlock(&bch_register_lock); bb6d355c2aff42 Coly Li 2019-04-25 2589 /* blkdev_put() will be called in cached_dev_free() */ fc8f19cc5dce18 Christoph Hellwig 2020-01-24 2590 if (ret < 0) fc8f19cc5dce18 Christoph Hellwig 2020-01-24 2591 goto out_free_sb; cafe563591446c Kent Overstreet 2013-03-23 2592 } else { cafe563591446c Kent Overstreet 2013-03-23 2593 struct cache *ca = kzalloc(sizeof(*ca), GFP_KERNEL); 1fae7cf05293d3 Coly Li 2018-08-11 2594 f59fce847fc848 Kent Overstreet 2013-05-15 2595 if (!ca) 50246693f81fe8 Christoph Hellwig 2020-01-24 2596 goto out_put_sb_page; cafe563591446c Kent Overstreet 2013-03-23 2597 bb6d355c2aff42 Coly Li 2019-04-25 2598 /* blkdev_put() will be called in bch_cache_release() */ cfa0c56db9c087 Christoph Hellwig 2020-01-24 2599 if (register_cache(sb, sb_disk, bdev, ca) != 0) fc8f19cc5dce18 Christoph Hellwig 2020-01-24 2600 goto out_free_sb; 50246693f81fe8 Christoph Hellwig 2020-01-24 2601 } bb05520ea94f19 Alex Dewar 2020-10-09 2602 #endif 50246693f81fe8 Christoph Hellwig 2020-01-24 2603 50246693f81fe8 Christoph Hellwig 2020-01-24 2604 done: f59fce847fc848 Kent Overstreet 2013-05-15 2605 kfree(sb); f59fce847fc848 Kent Overstreet 2013-05-15 2606 kfree(path); f59fce847fc848 Kent Overstreet 2013-05-15 2607 module_put(THIS_MODULE); 50246693f81fe8 Christoph Hellwig 2020-01-24 2608 return size; f59fce847fc848 Kent Overstreet 2013-05-15 2609 50246693f81fe8 Christoph Hellwig 2020-01-24 2610 out_put_sb_page: cfa0c56db9c087 Christoph Hellwig 2020-01-24 2611 put_page(virt_to_page(sb_disk)); 50246693f81fe8 Christoph Hellwig 2020-01-24 2612 out_blkdev_put: cafe563591446c Kent Overstreet 2013-03-23 2613 blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL); 50246693f81fe8 Christoph Hellwig 2020-01-24 2614 out_free_sb: 50246693f81fe8 Christoph Hellwig 2020-01-24 2615 kfree(sb); 50246693f81fe8 Christoph Hellwig 2020-01-24 2616 out_free_path: 50246693f81fe8 Christoph Hellwig 2020-01-24 2617 kfree(path); ae3cd299919af6 Coly Li 2020-01-24 2618 path = NULL; 50246693f81fe8 Christoph Hellwig 2020-01-24 2619 out_module_put: 50246693f81fe8 Christoph Hellwig 2020-01-24 2620 module_put(THIS_MODULE); 50246693f81fe8 Christoph Hellwig 2020-01-24 2621 out: 46f5aa8806e34f Joe Perches 2020-05-27 2622 pr_info("error %s: %s\n", path?path:"", err); 50246693f81fe8 Christoph Hellwig 2020-01-24 2623 return ret; cafe563591446c Kent Overstreet 2013-03-23 2624 } cafe563591446c Kent Overstreet 2013-03-23 2625 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
