tree: git://git.infradead.org/users/hch/block.git blkdev.h-includes head: 48f7fda047613ceec07881f14a5eaf1ee19d4433 commit: e7a8094f7da3b6e7c7a853afa0dd9d7e40fafff2 [15/16] block: move integrity handling out of blkdev.h config: i386-randconfig-s001-20210724 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty git remote add hch-block git://git.infradead.org/users/hch/block.git git fetch --no-tags hch-block blkdev.h-includes git checkout e7a8094f7da3b6e7c7a853afa0dd9d7e40fafff2 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): fs/block_dev.c: In function 'bdev_read_page': 734 | if (!ops->rw_page || bdev_get_integrity(bdev)) | ^~~~~~~~~~~~~~~~~~ In file included from include/linux/blkdev.h:7, from fs/block_dev.c:16: At top level: include/linux/genhd.h:329:12: warning: 'bd_register_pending_holders' defined but not used [-Wunused-function] 329 | static int bd_register_pending_holders(struct gendisk *disk) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/bdev_get_integrity +734 fs/block_dev.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 711 47a191fd38ebdd Matthew Wilcox 2014-06-04 712 /** 47a191fd38ebdd Matthew Wilcox 2014-06-04 713 * bdev_read_page() - Start reading a page from a block device 47a191fd38ebdd Matthew Wilcox 2014-06-04 714 * @bdev: The device to read the page from 47a191fd38ebdd Matthew Wilcox 2014-06-04 715 * @sector: The offset on the device to read the page to (need not be aligned) 47a191fd38ebdd Matthew Wilcox 2014-06-04 716 * @page: The page to read 47a191fd38ebdd Matthew Wilcox 2014-06-04 717 * 47a191fd38ebdd Matthew Wilcox 2014-06-04 718 * On entry, the page should be locked. It will be unlocked when the page 47a191fd38ebdd Matthew Wilcox 2014-06-04 719 * has been read. If the block driver implements rw_page synchronously, 47a191fd38ebdd Matthew Wilcox 2014-06-04 720 * that will be true on exit from this function, but it need not be. 47a191fd38ebdd Matthew Wilcox 2014-06-04 721 * 47a191fd38ebdd Matthew Wilcox 2014-06-04 722 * Errors returned by this function are usually "soft", eg out of memory, or 47a191fd38ebdd Matthew Wilcox 2014-06-04 723 * queue full; callers should try a different route to read this page rather 47a191fd38ebdd Matthew Wilcox 2014-06-04 724 * than propagate an error back up the stack. 47a191fd38ebdd Matthew Wilcox 2014-06-04 725 * 47a191fd38ebdd Matthew Wilcox 2014-06-04 726 * Return: negative errno if an error occurs, 0 if submission was successful. 47a191fd38ebdd Matthew Wilcox 2014-06-04 727 */ 47a191fd38ebdd Matthew Wilcox 2014-06-04 728 int bdev_read_page(struct block_device *bdev, sector_t sector, 47a191fd38ebdd Matthew Wilcox 2014-06-04 729 struct page *page) 47a191fd38ebdd Matthew Wilcox 2014-06-04 730 { 47a191fd38ebdd Matthew Wilcox 2014-06-04 731 const struct block_device_operations *ops = bdev->bd_disk->fops; 2e6edc95382cc3 Dan Williams 2015-11-19 732 int result = -EOPNOTSUPP; 2e6edc95382cc3 Dan Williams 2015-11-19 733 f68eb1e71a9276 Vishal Verma 2015-05-12 @734 if (!ops->rw_page || bdev_get_integrity(bdev)) 2e6edc95382cc3 Dan Williams 2015-11-19 735 return result; 2e6edc95382cc3 Dan Williams 2015-11-19 736 e556f6ba10f0f3 Christoph Hellwig 2020-06-26 737 result = blk_queue_enter(bdev->bd_disk->queue, 0); 2e6edc95382cc3 Dan Williams 2015-11-19 738 if (result) 2e6edc95382cc3 Dan Williams 2015-11-19 739 return result; 3f289dcb4b2654 Tejun Heo 2018-07-18 740 result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, 3f289dcb4b2654 Tejun Heo 2018-07-18 741 REQ_OP_READ); e556f6ba10f0f3 Christoph Hellwig 2020-06-26 742 blk_queue_exit(bdev->bd_disk->queue); 2e6edc95382cc3 Dan Williams 2015-11-19 743 return result; 47a191fd38ebdd Matthew Wilcox 2014-06-04 744 } 47a191fd38ebdd Matthew Wilcox 2014-06-04 745 :::::: The code at line 734 was first introduced by commit :::::: f68eb1e71a92765ffd8eb68466a41b48f2fbba04 fs/block_dev.c: skip rw_page if bdev has integrity :::::: TO: Vishal Verma <vishal.l.verma(a)intel.com&gt; :::::: CC: Dan Williams <dan.j.williams(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org