Re: [PATCH] btrfs: raid56: Use correct stolen pages to calculate P/Q

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On 11/22/2016 07:26 PM, Qu Wenruo wrote:


We're changing which pages we kmap() but not which ones we kunmap(). Can
you please update the kunmap loop to use this pointers array?  Also it
looks like this kmap is never unmapped.

Oh I forget that.
I'll update it soon.

Thanks!


This reminds me, is there any kernel debug option to trace such unmapped
pages?


I don't think so, which is surprising. It explodes so quickly on 32 bit machines, its easiest to boot it on a 32 bit qemu.

-chris

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