tree: git://neil.brown.name/md devel
head: c086427458276f6265b609a682651786e1281c82
commit: a62ddcf73e2fe3387dbf27280691045446be0e15 [19/30] raid5: log recovery
reproduce:
# apt-get install sparse
git checkout a62ddcf73e2fe3387dbf27280691045446be0e15
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/md/raid5-cache.c:836:24: sparse: incompatible types in comparison expression (different address spaces)
drivers/md/raid5-cache.c:840:25: sparse: incompatible types in comparison expression (different address spaces)
vim +836 drivers/md/raid5-cache.c
820 continue;
821 addr = kmap_atomic(sh->dev[disk_index].page);
822 checksum = crc32_le(log->uuid_checksum, addr, PAGE_SIZE);
823 kunmap_atomic(addr);
824 if (checksum != sh->dev[disk_index].log_checksum)
825 goto error;
826 }
827
828 for (disk_index = 0; disk_index < sh->disks; disk_index++) {
829 struct md_rdev *rdev, *rrdev;
830
831 if (!test_and_clear_bit(R5_Wantwrite,
832 &sh->dev[disk_index].flags))
833 continue;
834
835 /* in case device is broken */
> 836 rdev = rcu_dereference(conf->disks[disk_index].rdev);
837 if (rdev)
838 sync_page_io(rdev, stripe_sect, PAGE_SIZE,
839 sh->dev[disk_index].page, WRITE, false);
840 rrdev = rcu_dereference(conf->disks[disk_index].replacement);
841 if (rrdev)
842 sync_page_io(rrdev, stripe_sect, PAGE_SIZE,
843 sh->dev[disk_index].page, WRITE, false);
844 }
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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