Re: [PATCH v8 3/4] Adds blk_interposer to md.
Hi Sergei,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on block/for-next]
[also build test WARNING on hch-configfs/for-next v5.12-rc6]
[cannot apply to dm/for-next next-20210409]
[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/Sergei-Shtepa/block-device-interposer/20210409-194943
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
for-next
config: x86_64-randconfig-s032-20210409 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-279-g6d5d9b42-dirty
#
https://github.com/0day-ci/linux/commit/df79fb333cb0a1263a1f03f54de425507e3c2238
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Sergei-Shtepa/block-device-interposer/20210409-194943
git checkout df79fb333cb0a1263a1f03f54de425507e3c2238
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
sparse warnings: (new ones prefixed by >>)
>> drivers/md/dm-table.c:337:63: sparse: sparse: incorrect type in argument 3
>> (different base types) @@ expected restricted fmode_t [usertype] mode @@
>> got bool [usertype] interpose @@
drivers/md/dm-table.c:337:63: sparse: expected restricted fmode_t
[usertype] mode
drivers/md/dm-table.c:337:63: sparse: got bool [usertype] interpose
--
>> drivers/md/dm.c:2682:5: sparse: sparse: symbol '__dm_attach_interposer' was
>> not declared. Should it be static?
>> drivers/md/dm.c:2724:5: sparse: sparse: symbol '__dm_detach_interposer' was
>> not declared. Should it be static?
Please review and possibly fold the followup patch.
vim +337 drivers/md/dm-table.c
322
323 /*
324 * This upgrades the mode on an already open dm_dev, being
325 * careful to leave things as they were if we fail to reopen the
326 * device and not to touch the existing bdev field in case
327 * it is accessed concurrently.
328 */
329 static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
330 bool interpose, struct mapped_device *md)
331 {
332 int r;
333 struct dm_dev *old_dev, *new_dev;
334
335 old_dev = dd->dm_dev;
336
> 337 r = dm_get_table_device(md, dd->dm_dev->bdev->bd_dev, interpose,
338 dd->dm_dev->mode | new_mode, _dev);
339 if (r)
340 return r;
341
342 dd->dm_dev = new_dev;
343 dm_put_table_device(md, old_dev);
344
345 return 0;
346 }
347
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
Re: [PATCH v8 3/4] Adds blk_interposer to md.
Hi Sergei,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on block/for-next]
[also build test WARNING on hch-configfs/for-next v5.12-rc6]
[cannot apply to dm/for-next next-20210409]
[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/Sergei-Shtepa/block-device-interposer/20210409-194943
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
for-next
config: i386-randconfig-m021-20210409 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
#
https://github.com/0day-ci/linux/commit/df79fb333cb0a1263a1f03f54de425507e3c2238
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Sergei-Shtepa/block-device-interposer/20210409-194943
git checkout df79fb333cb0a1263a1f03f54de425507e3c2238
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
All warnings (new ones prefixed by >>):
>> drivers/md/dm.c:2682:5: warning: no previous prototype for
>> '__dm_attach_interposer' [-Wmissing-prototypes]
2682 | int __dm_attach_interposer(struct mapped_device *md)
| ^~
>> drivers/md/dm.c:2724:5: warning: no previous prototype for
>> '__dm_detach_interposer' [-Wmissing-prototypes]
2724 | int __dm_detach_interposer(struct mapped_device *md)
| ^~
vim +/__dm_attach_interposer +2682 drivers/md/dm.c
2681
> 2682 int __dm_attach_interposer(struct mapped_device *md)
2683 {
2684 int r;
2685 struct dm_table *map;
2686 struct block_device *original_bdev = NULL;
2687
2688 if (dm_interposer_attached(md))
2689 return 0;
2690
2691 map = rcu_dereference_protected(md->map,
2692
lockdep_is_held(>suspend_lock));
2693 if (!map) {
2694 DMERR("%s: interposers table is not initialized",
2695 dm_device_name(md));
2696 return -EINVAL;
2697 }
2698
2699 original_bdev = get_interposed_bdev(map);
2700 if (!original_bdev) {
2701 DMERR("%s: interposer cannot get interposed device from
table",
2702 dm_device_name(md));
2703 return -EINVAL;
2704 }
2705
2706 bdev_interposer_lock(original_bdev);
2707
2708 r = bdev_interposer_attach(original_bdev, dm_disk(md)->part0);
2709 if (r)
2710 DMERR("%s: failed to attach interposer",
2711 dm_device_name(md));
2712 else
2713 set_bit(DMF_INTERPOSER_ATTACHED, >flags);
2714
2715 bdev_interposer_unlock(original_bdev);
2716
2717 unlock_bdev_fs(md, original_bdev);
2718
2719 bdput(original_bdev);
2720
2721 return r;
2722 }
2723
> 2724 int __dm_detach_interposer(struct mapped_device *md)
2725 {
2726 struct dm_table *map = NULL;
2727 struct block_device *original_bdev;
2728
2729 if (!dm_interposer_attached(md))
2730 return 0;
2731 /*
2732 * If mapped device is suspended, but should be detached
2733 * we just detach without freeze fs on interposed device.
2734 */
2735 map = rcu_dereference_protected(md->map,
2736 lockdep_is_held(>suspend_lock));
2737 if (!map) {
2738 /*
2739 * If table is not initialized then interposed device
2740 * cannot be attached
2741 */
2742 DMERR("%s: table is not initialized for device",
2743 dm_device_name(md));
2744 return -EINVAL;
2745 }
2746
2747 original_bdev = get_interposed_bdev(map);
2748 if (!original_bdev) {
2749 DMERR("%s: interposer cannot get interposed device from
table",
2750 dm_device_name(md));
2751 return -EINVAL;
2752 }
2753
2754 bdev_interposer_lock(original_bdev);
2755
2756 bdev_interposer_detach(original_bdev);
2757 clear_bit(DMF_INTERPOSER_ATTACHED, >flags);
2758
2759 bdev_interposer_unlock(original_bdev);
2760
2761 bdput(original_bdev);
2762 return 0;
2763 }
2764 /*
2765 * We need to be able to change a mapping table under a mounted
Re: [PATCH v8 3/4] Adds blk_interposer to md.
Hi Sergei,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on block/for-next]
[also build test WARNING on hch-configfs/for-next v5.12-rc6]
[cannot apply to dm/for-next next-20210409]
[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/Sergei-Shtepa/block-device-interposer/20210409-194943
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
for-next
config: arm-randconfig-r025-20210409 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
dd453a1389b6a7e6d9214b449d3c54981b1a89b6)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
#
https://github.com/0day-ci/linux/commit/df79fb333cb0a1263a1f03f54de425507e3c2238
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Sergei-Shtepa/block-device-interposer/20210409-194943
git checkout df79fb333cb0a1263a1f03f54de425507e3c2238
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
All warnings (new ones prefixed by >>):
>> drivers/md/dm.c:2682:5: warning: no previous prototype for function
>> '__dm_attach_interposer' [-Wmissing-prototypes]
int __dm_attach_interposer(struct mapped_device *md)
^
drivers/md/dm.c:2682:1: note: declare 'static' if the function is not
intended to be used outside of this translation unit
int __dm_attach_interposer(struct mapped_device *md)
^
static
>> drivers/md/dm.c:2724:5: warning: no previous prototype for function
>> '__dm_detach_interposer' [-Wmissing-prototypes]
int __dm_detach_interposer(struct mapped_device *md)
^
drivers/md/dm.c:2724:1: note: declare 'static' if the function is not
intended to be used outside of this translation unit
int __dm_detach_interposer(struct mapped_device *md)
^
static
2 warnings generated.
vim +/__dm_attach_interposer +2682 drivers/md/dm.c
2681
> 2682 int __dm_attach_interposer(struct mapped_device *md)
2683 {
2684 int r;
2685 struct dm_table *map;
2686 struct block_device *original_bdev = NULL;
2687
2688 if (dm_interposer_attached(md))
2689 return 0;
2690
2691 map = rcu_dereference_protected(md->map,
2692
lockdep_is_held(>suspend_lock));
2693 if (!map) {
2694 DMERR("%s: interposers table is not initialized",
2695 dm_device_name(md));
2696 return -EINVAL;
2697 }
2698
2699 original_bdev = get_interposed_bdev(map);
2700 if (!original_bdev) {
2701 DMERR("%s: interposer cannot get interposed device from
table",
2702 dm_device_name(md));
2703 return -EINVAL;
2704 }
2705
2706 bdev_interposer_lock(original_bdev);
2707
2708 r = bdev_interposer_attach(original_bdev, dm_disk(md)->part0);
2709 if (r)
2710 DMERR("%s: failed to attach interposer",
2711 dm_device_name(md));
2712 else
2713 set_bit(DMF_INTERPOSER_ATTACHED, >flags);
2714
2715 bdev_interposer_unlock(original_bdev);
2716
2717 unlock_bdev_fs(md, original_bdev);
2718
2719 bdput(original_bdev);
2720
2721 return r;
2722 }
2723
> 2724 int __dm_detach_interposer(struct mapped_device *md)
2725 {
2726 struct dm_table *map = NULL;
2727 struct block_device *original_bdev;
2728
2729 if (!dm_interposer_attached(md))
2730 return 0;
2731 /*
2732 * If mapped device is suspended, but should be detached
2733 * we just detach without freeze fs on interposed device.
2734 */
2735 map = rcu_dereference_protected(md->map,
2736 lockdep_is_held(>suspend_lock));
2737 if (!map) {
2738 /*
2739 * If table is not initialized then interposed device
2740 * cannot be attached
2741 */
2742 DMERR("%s: table is not initialized for device",
2743 dm_device_name(md));
2744 return -EINVAL;
