lkml.org 
[lkml]   [2021]   [Jul]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2] mm/mremap: Don't account pages in vma_to_resize()
From
Date
On 7/21/21 9:05 PM, Andrew Morton wrote:
> On Wed, 21 Jul 2021 14:21:54 +0100 Dmitry Safonov <0x7f454c46@gmail.com> wrote:
>
>>> Let's not do this.
>>> Account memory in mremap() fast-path for growing VMAs or in move_vma()
>>> for actually moving things. The same simpler way as it's done by
>>> vm_stat_account(), but with a difference to call
>>> security_vm_enough_memory_mm() before copying/adjusting VMA.
>>>
>>> Originally noticed by Chen Wandun:
>>> https://lkml.kernel.org/r/20210717101942.120607-1-chenwandun@huawei.com
>>
>> The patch by Chen Wandun still makes sense with this v2.
>> Heh :-)
>
> Should
> https://lkml.kernel.org/r/20210717101942.120607-1-chenwandun@huawei.com
> still be applied then? Did you ack it?
>

Yes, please keep that patch with
Acked-by: Dmitry Safonov <dima@arista.com>

This one comes on the top to correct accounting for MREMAP_DONTUNMAP.

Thanks,
Dmitry

\
 
 \ /
  Last update: 2021-07-21 22:11    [W:0.041 / U:0.452 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site