tree: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-cgroup-btrfs-metadata head: 718f5fe07069a8eae4a561eb835be3a3163a6539 commit: 718f5fe07069a8eae4a561eb835be3a3163a6539 [8/8] btrfs: ensure that metadata and flush are issued from the root cgroup config: blackfin-allyesconfig (attached as .config) compiler: bfin-uclinux-gcc (GCC) 6.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 718f5fe07069a8eae4a561eb835be3a3163a6539 # save the attached .config to linux build tree make.cross ARCH=blackfin All errors (new ones prefixed by >>): fs/btrfs/check-integrity.c: In function 'btrfsic_submit_bh': >> fs/btrfs/check-integrity.c:2744:10: error: implicit declaration of function 'submit_bh_blkcg_css' [-Werror=implicit-function-declaration] return submit_bh_blkcg_css(op, op_flags, blkcg_root_css); ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/submit_bh_blkcg_css +2744 fs/btrfs/check-integrity.c 2738 2739 int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh) 2740 { 2741 struct btrfsic_dev_state *dev_state; 2742 2743 if (!btrfsic_is_initialized) > 2744 return submit_bh_blkcg_css(op, op_flags, blkcg_root_css); 2745 2746 mutex_lock(&btrfsic_mutex); 2747 /* since btrfsic_submit_bh() might also be called before 2748 * btrfsic_mount(), this might return NULL */ 2749 dev_state = btrfsic_dev_state_lookup(bh->b_bdev->bd_dev); 2750 2751 /* Only called to write the superblock (incl. FLUSH/FUA) */ 2752 if (NULL != dev_state && 2753 (op == REQ_OP_WRITE) && bh->b_size > 0) { 2754 u64 dev_bytenr; 2755 2756 dev_bytenr = BTRFS_BDEV_BLOCKSIZE * bh->b_blocknr; 2757 if (dev_state->state->print_mask & 2758 BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) 2759 pr_info("submit_bh(op=0x%x,0x%x, blocknr=%llu (bytenr %llu), size=%zu, data=%p, bdev=%p)\n", 2760 op, op_flags, (unsigned long long)bh->b_blocknr, 2761 dev_bytenr, bh->b_size, bh->b_data, bh->b_bdev); 2762 btrfsic_process_written_block(dev_state, dev_bytenr, 2763 &bh->b_data, 1, NULL, 2764 NULL, bh, op_flags); 2765 } else if (NULL != dev_state && (op_flags & REQ_PREFLUSH)) { 2766 if (dev_state->state->print_mask & 2767 BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) 2768 pr_info("submit_bh(op=0x%x,0x%x FLUSH, bdev=%p)\n", 2769 op, op_flags, bh->b_bdev); 2770 if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) { 2771 if ((dev_state->state->print_mask & 2772 (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | 2773 BTRFSIC_PRINT_MASK_VERBOSE))) 2774 pr_info("btrfsic_submit_bh(%s) with FLUSH but dummy block already in use (ignored)!\n", 2775 dev_state->name); 2776 } else { 2777 struct btrfsic_block *const block = 2778 &dev_state->dummy_block_for_bio_bh_flush; 2779 2780 block->is_iodone = 0; 2781 block->never_written = 0; 2782 block->iodone_w_error = 0; 2783 block->flush_gen = dev_state->last_flush_gen + 1; 2784 block->submit_bio_bh_rw = op_flags; 2785 block->orig_bio_bh_private = bh->b_private; 2786 block->orig_bio_bh_end_io.bh = bh->b_end_io; 2787 block->next_in_same_bio = NULL; 2788 bh->b_private = block; 2789 bh->b_end_io = btrfsic_bh_end_io; 2790 } 2791 } 2792 mutex_unlock(&btrfsic_mutex); 2793 return submit_bh(op, op_flags, bh); 2794 } 2795 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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