lkml.org 
[lkml]   [2017]   [Aug]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 05/16] mm: Protect VMA modifications using VMA sequence count
From
Date
On 09/08/2017 12:12, Kirill A. Shutemov wrote:
> On Tue, Aug 08, 2017 at 04:35:38PM +0200, Laurent Dufour wrote:
>> The VMA sequence count has been introduced to allow fast detection of
>> VMA modification when running a page fault handler without holding
>> the mmap_sem.
>>
>> This patch provides protection agains the VMA modification done in :
>> - madvise()
>> - mremap()
>> - mpol_rebind_policy()
>> - vma_replace_policy()
>> - change_prot_numa()
>> - mlock(), munlock()
>> - mprotect()
>> - mmap_region()
>> - collapse_huge_page()
>
> I don't thinks it's anywhere near complete list of places where we touch
> vm_flags. What is your plan for the rest?

The goal is only to protect places where change to the VMA is impacting the
page fault handling. If you think I missed one, please advise.

Thanks,
Laurent.

\
 
 \ /
  Last update: 2017-08-09 12:44    [W:0.413 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site