Re: [PATCH 0/5] ext4/overlayfs: fiemap related fixes

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On Apr 25, 2020, at 02:43, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> 
> On Sat, Apr 25, 2020 at 12:11:59PM +0300, Amir Goldstein wrote:
>> FWIW, I agree with you.
>> And seems like Jan does as well, since he ACKed all your patches.
>> Current patches would be easier to backport to stable kernels.
> 
> Honestly, the proper fix is pretty much trivial.  I wrote it up this
> morning over coffee:
> 
>    http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/fiemap-fix
> 
> Still needs more testing, though.

The "maxbytes" value should be passed in from the caller, since this
may be different per inode (for ext4 at least).

Cheers, Andreas



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