Re: [PATCH] sysctl: some input constraints checks were added for /proc/sys/vm directory

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On Wed,  2 Mar 2011 17:16:14 +0100
Petr Holasek <pholasek@xxxxxxxxxx> wrote:

> There were added boundaries of allowed input ranges for: dirty_expire_centisecs,
> drop_caches, overcommit_memory, page-cluster and panic_on_oom.
> 
> ...
>

Well..  It's a non-back-compatible userspace interface change.

Yes, it's unlikely that any userspace was doing, for example, "echo 7 >
/proc/sys/vm/drop_caches".  But if it was, we just broke it.
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