[Devel] [PATCH rh7] mm: mmap_region: uncharge UB_LOCKEDPAGES if vma cannot be locked

[Vladimir Davydov]

On Thu, Nov 26, 2015 at 06:08:25PM +0300, Vladimir Davydov wrote:
> mmap_region workflow regarding locked pages was changed during rebase
> from RH6 to RH7. The patch porting locked pages accounting did not allow
> for that.
> 
> Presumably, this should fix UB_LOCKEDPAGES leak on CT stop:
> 
>   Ub 101 helds 8 in lockedpages on put
>   UB: leaked beancounter 101 (ffff880404e95000)
>   Tainting kernel with flag 0xa
> 
> https://jira.sw.ru/browse/PSBM-39435
> 
> Signed-off-by: Vladimir Davydov <vdavydov at virtuozzo.com>

Fixes: b6d6ede8c4fc4 ("ve/bc/mm: port UB_PRIVVMPAGES, UB_SHMPAGES, and UB_LOCKEDPAGES accounting")