Re: [PATCH 1/5] ext4 online defrag header file changes

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On Mon, Mar 24, 2008 at 09:31:03PM +0900, Akira Fujita wrote:
> Hi Aneesh,
> > On Mon, Mar 24, 2008 at 08:00:54PM +0900, Akira Fujita wrote:
> >>>   
> >> Is EXT4_IOC_FIEMAP going to be added to the ext4 patch queue?
> >> I will try to use EXT4_IOC_FIEMAP instead of EXT4_IOC_EXTENTS_INFO
> >> in ext4 online defrag when kernel supports it.
> >
> > Can you also look at the sparse warnings with the patches ?
> >
> I have already released the fixed patch before, but it is not in the ext4 patch queue yet.
> Mingming, could you replace new ext4-online-defrag-free-space-fragmentation.patch
> with old one in the ext4 patch queue? 
> 

  CHECK   fs/ext4/defrag.c
  fs/ext4/defrag.c:181:7: warning: cast to restricted type
  fs/ext4/defrag.c:181:7: warning: cast from restricted type
  fs/ext4/defrag.c:613:21: warning: incorrect type in argument 1
  (different address spaces)
  fs/ext4/defrag.c:613:21:    expected void [noderef] <asn:1>*to
  fs/ext4/defrag.c:613:21:    got struct ext4_group_data_info *<noident>
  fs/ext4/defrag.c:629:24: warning: incorrect type in argument 1
  (different address spaces)
  fs/ext4/defrag.c:629:24:    expected void [noderef] <asn:1>*to
  fs/ext4/defrag.c:629:24:    got struct ext4_extents_info *<noident>
  fs/ext4/defrag.c:849:29: warning: potentially expensive pointer
  subtraction
  fs/ext4/defrag.c:912:22: warning: potentially expensive pointer
  subtraction

you would need http://www.kernel.org/pub/software/devel/sparse/
to find and fix these warnings.

-aneesh
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