Re: [RFC PATCH v3 0/9] fsdax: introduce fs query to support reflink

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Hi, Shiyang,

On 12/15/2020 4:14 AM, Shiyang Ruan wrote:
The call trace is like this:
memory_failure()
  pgmap->ops->memory_failure()      => pmem_pgmap_memory_failure()
   gendisk->fops->corrupted_range() => - pmem_corrupted_range()
                                       - md_blk_corrupted_range()
    sb->s_ops->currupted_range()    => xfs_fs_corrupted_range()
     xfs_rmap_query_range()
      xfs_currupt_helper()
       * corrupted on metadata
           try to recover data, call xfs_force_shutdown()
       * corrupted on file data
           try to recover data, call mf_dax_mapping_kill_procs()

The fsdax & reflink support for XFS is not contained in this patchset.

(Rebased on v5.10)

So I tried the patchset with pmem error injection, the SIGBUS payload
does not look right -

** SIGBUS(7): **
** si_addr(0x(nil)), si_lsb(0xC), si_code(0x4, BUS_MCEERR_AR) **

I expect the payload looks like

** si_addr(0x7f3672e00000), si_lsb(0x15), si_code(0x4, BUS_MCEERR_AR) **

thanks,
-jane








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