On Wed, 11 Sep 2013, KOSAKI Motohiro wrote:
> At least, currently mpol_to_str() already have following assertion. I mean,
> the code assume every developer know maximum length of mempolicy. I have no
> seen any reason to bring addional complication to shmem area.
>
>
> /*
> * Sanity check: room for longest mode, flag and some nodes
> */
> VM_BUG_ON(maxlen < strlen("interleave") + strlen("relative") + 16);
>
No need to make it a runtime error, the value passed as maxlen is a
constant, as is the use of sizeof(buffer), so the value is known at
compile-time. You can make this a BUILD_BUG_ON() if you are creative.
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