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Date: Fri, 16 Jul 2021 09:09:56 +0800
From: kernel test robot <lkp@...el.com>
To: Yury Kamenev <damtev@...dex-team.ru>, mst@...hat.com,
jasowang@...hat.com, pbonzini@...hat.com, stefanha@...hat.com,
axboe@...nel.dk, hch@....de, cand@....com,
virtualization@...ts.linux-foundation.org,
linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: kbuild-all@...ts.01.org
Subject: Re: [PATCH 1/1] virtio: disable partitions scanning for no
partitions block
Hi Yury,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on block/for-next]
[also build test ERROR on vhost/linux-next hch-configfs/for-next linus/master v5.14-rc1 next-20210715]
[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/Yury-Kamenev/virtio-disable-partitions-scanning-for-no-partitions-block/20210715-175107
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 10.3.0
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
# https://github.com/0day-ci/linux/commit/b5b35e33f22266b3905186a005992d54ae71e51b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Yury-Kamenev/virtio-disable-partitions-scanning-for-no-partitions-block/20210715-175107
git checkout b5b35e33f22266b3905186a005992d54ae71e51b
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/block/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from drivers/block/virtio_blk.c:3:
drivers/block/virtio_blk.c: In function 'virtblk_probe':
>> drivers/block/virtio_blk.c:807:15: error: 'partitions_scanning_disable' undeclared (first use in this function)
807 | if (unlikely(partitions_scanning_disable))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
drivers/block/virtio_blk.c:807:15: note: each undeclared identifier is reported only once for each function it appears in
807 | if (unlikely(partitions_scanning_disable))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
vim +/partitions_scanning_disable +807 drivers/block/virtio_blk.c
707
708 static int virtblk_probe(struct virtio_device *vdev)
709 {
710 struct virtio_blk *vblk;
711 struct request_queue *q;
712 int err, index;
713
714 u32 v, blk_size, max_size, sg_elems, opt_io_size;
715 u16 min_io_size;
716 u8 physical_block_exp, alignment_offset;
717 unsigned int queue_depth;
718
719 if (!vdev->config->get) {
720 dev_err(&vdev->dev, "%s failure: config access disabled\n",
721 __func__);
722 return -EINVAL;
723 }
724
725 err = ida_simple_get(&vd_index_ida, 0, minor_to_index(1 << MINORBITS),
726 GFP_KERNEL);
727 if (err < 0)
728 goto out;
729 index = err;
730
731 /* We need to know how many segments before we allocate. */
732 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_SEG_MAX,
733 struct virtio_blk_config, seg_max,
734 &sg_elems);
735
736 /* We need at least one SG element, whatever they say. */
737 if (err || !sg_elems)
738 sg_elems = 1;
739
740 /* Prevent integer overflows and honor max vq size */
741 sg_elems = min_t(u32, sg_elems, VIRTIO_BLK_MAX_SG_ELEMS - 2);
742
743 /* We need extra sg elements at head and tail. */
744 sg_elems += 2;
745 vdev->priv = vblk = kmalloc(sizeof(*vblk), GFP_KERNEL);
746 if (!vblk) {
747 err = -ENOMEM;
748 goto out_free_index;
749 }
750
751 /* This reference is dropped in virtblk_remove(). */
752 refcount_set(&vblk->refs, 1);
753 mutex_init(&vblk->vdev_mutex);
754
755 vblk->vdev = vdev;
756 vblk->sg_elems = sg_elems;
757
758 INIT_WORK(&vblk->config_work, virtblk_config_changed_work);
759
760 err = init_vq(vblk);
761 if (err)
762 goto out_free_vblk;
763
764 /* Default queue sizing is to fill the ring. */
765 if (likely(!virtblk_queue_depth)) {
766 queue_depth = vblk->vqs[0].vq->num_free;
767 /* ... but without indirect descs, we use 2 descs per req */
768 if (!virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC))
769 queue_depth /= 2;
770 } else {
771 queue_depth = virtblk_queue_depth;
772 }
773
774 memset(&vblk->tag_set, 0, sizeof(vblk->tag_set));
775 vblk->tag_set.ops = &virtio_mq_ops;
776 vblk->tag_set.queue_depth = queue_depth;
777 vblk->tag_set.numa_node = NUMA_NO_NODE;
778 vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
779 vblk->tag_set.cmd_size =
780 sizeof(struct virtblk_req) +
781 sizeof(struct scatterlist) * sg_elems;
782 vblk->tag_set.driver_data = vblk;
783 vblk->tag_set.nr_hw_queues = vblk->num_vqs;
784
785 err = blk_mq_alloc_tag_set(&vblk->tag_set);
786 if (err)
787 goto out_free_vq;
788
789 vblk->disk = blk_mq_alloc_disk(&vblk->tag_set, vblk);
790 if (IS_ERR(vblk->disk)) {
791 err = PTR_ERR(vblk->disk);
792 goto out_free_tags;
793 }
794 q = vblk->disk->queue;
795
796 virtblk_name_format("vd", index, vblk->disk->disk_name, DISK_NAME_LEN);
797
798 vblk->disk->major = major;
799 vblk->disk->first_minor = index_to_minor(index);
800 vblk->disk->minors = 1 << PART_BITS;
801 vblk->disk->private_data = vblk;
802 vblk->disk->fops = &virtblk_fops;
803 vblk->disk->flags |= GENHD_FL_EXT_DEVT;
804 vblk->index = index;
805
806 #ifdef CONFIG_VIRTIO_BLK_NO_PART_SCAN
> 807 if (unlikely(partitions_scanning_disable))
808 /* disable partitions scanning if it was stated in virtio features*/
809 if (virtio_has_feature(vdev, VIRTIO_BLK_F_NO_PART_SCAN))
810 vblk->disk->flags |= GENHD_FL_NO_PART_SCAN;
811 #endif
812
813 /* configure queue flush support */
814 virtblk_update_cache_mode(vdev);
815
816 /* If disk is read-only in the host, the guest should obey */
817 if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
818 set_disk_ro(vblk->disk, 1);
819
820 /* We can handle whatever the host told us to handle. */
821 blk_queue_max_segments(q, vblk->sg_elems-2);
822
823 /* No real sector limit. */
824 blk_queue_max_hw_sectors(q, -1U);
825
826 max_size = virtio_max_dma_size(vdev);
827
828 /* Host can optionally specify maximum segment size and number of
829 * segments. */
830 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_SIZE_MAX,
831 struct virtio_blk_config, size_max, &v);
832 if (!err)
833 max_size = min(max_size, v);
834
835 blk_queue_max_segment_size(q, max_size);
836
837 /* Host can optionally specify the block size of the device */
838 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_BLK_SIZE,
839 struct virtio_blk_config, blk_size,
840 &blk_size);
841 if (!err)
842 blk_queue_logical_block_size(q, blk_size);
843 else
844 blk_size = queue_logical_block_size(q);
845
846 /* Use topology information if available */
847 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_TOPOLOGY,
848 struct virtio_blk_config, physical_block_exp,
849 &physical_block_exp);
850 if (!err && physical_block_exp)
851 blk_queue_physical_block_size(q,
852 blk_size * (1 << physical_block_exp));
853
854 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_TOPOLOGY,
855 struct virtio_blk_config, alignment_offset,
856 &alignment_offset);
857 if (!err && alignment_offset)
858 blk_queue_alignment_offset(q, blk_size * alignment_offset);
859
860 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_TOPOLOGY,
861 struct virtio_blk_config, min_io_size,
862 &min_io_size);
863 if (!err && min_io_size)
864 blk_queue_io_min(q, blk_size * min_io_size);
865
866 err = virtio_cread_feature(vdev, VIRTIO_BLK_F_TOPOLOGY,
867 struct virtio_blk_config, opt_io_size,
868 &opt_io_size);
869 if (!err && opt_io_size)
870 blk_queue_io_opt(q, blk_size * opt_io_size);
871
872 if (virtio_has_feature(vdev, VIRTIO_BLK_F_DISCARD)) {
873 q->limits.discard_granularity = blk_size;
874
875 virtio_cread(vdev, struct virtio_blk_config,
876 discard_sector_alignment, &v);
877 q->limits.discard_alignment = v ? v << SECTOR_SHIFT : 0;
878
879 virtio_cread(vdev, struct virtio_blk_config,
880 max_discard_sectors, &v);
881 blk_queue_max_discard_sectors(q, v ? v : UINT_MAX);
882
883 virtio_cread(vdev, struct virtio_blk_config, max_discard_seg,
884 &v);
885 blk_queue_max_discard_segments(q,
886 min_not_zero(v,
887 MAX_DISCARD_SEGMENTS));
888
889 blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
890 }
891
892 if (virtio_has_feature(vdev, VIRTIO_BLK_F_WRITE_ZEROES)) {
893 virtio_cread(vdev, struct virtio_blk_config,
894 max_write_zeroes_sectors, &v);
895 blk_queue_max_write_zeroes_sectors(q, v ? v : UINT_MAX);
896 }
897
898 virtblk_update_capacity(vblk, false);
899 virtio_device_ready(vdev);
900
901 device_add_disk(&vdev->dev, vblk->disk, virtblk_attr_groups);
902 return 0;
903
904 out_free_tags:
905 blk_mq_free_tag_set(&vblk->tag_set);
906 out_free_vq:
907 vdev->config->del_vqs(vdev);
908 kfree(vblk->vqs);
909 out_free_vblk:
910 kfree(vblk);
911 out_free_index:
912 ida_simple_remove(&vd_index_ida, index);
913 out:
914 return err;
915 }
916
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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