On Thu, 8 Feb 2018, Minchan Kim wrote:
> Hi Huang,
>
> On Thu, Feb 08, 2018 at 11:27:50PM +0800, huang ying wrote:
> > On Wed, Feb 7, 2018 at 3:00 PM, Huang, Ying wrote:
> > > From: Huang Ying
> > >
> > > It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> > > Page) and front
Minchan Kim writes:
> Hi Huang,
>
> On Thu, Feb 08, 2018 at 11:27:50PM +0800, huang ying wrote:
>> On Wed, Feb 7, 2018 at 3:00 PM, Huang, Ying wrote:
>> > From: Huang Ying
>> >
>> > It was reported by Sergey Senozhatsky that if THP (Transparent Huge
>> > Page) and frontswap (via zswap) are both
Hi Huang,
On Thu, Feb 08, 2018 at 11:27:50PM +0800, huang ying wrote:
> On Wed, Feb 7, 2018 at 3:00 PM, Huang, Ying wrote:
> > From: Huang Ying
> >
> > It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> > Page) and frontswap (via zswap) are both enabled, when memory goes low
>
On Wed, Feb 7, 2018 at 3:00 PM, Huang, Ying wrote:
> From: Huang Ying
>
> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> Page) and frontswap (via zswap) are both enabled, when memory goes low
> so that swap is triggered, segfault and memory corruption will occur
> in random
On Thu, Feb 8, 2018 at 6:17 PM, Minchan Kim wrote:
> On Wed, Feb 07, 2018 at 03:00:35PM +0800, Huang, Ying wrote:
>> From: Huang Ying
>>
>> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
>> Page) and frontswap (via zswap) are both enabled, when memory goes low
>> so that swap
On (02/08/18 02:25), Minchan Kim wrote:
[..]
> > > if (PageTransHuge(page)) {
> > > - if (IS_ENABLED(CONFIG_THP_SWAP))
> > > - get_swap_pages(1, true, &entry);
> > > + /* Frontswap doesn't support THP */
> > > + if (!frontswap_enabled()) {
> > > +
On Thu, Feb 08, 2018 at 10:36:35AM +0900, Sergey Senozhatsky wrote:
> On (02/07/18 13:05), Andrew Morton wrote:
> [..]
> > hm. This is assuming that "cluster==true" means "this is thp swap".
> > That's presently true, but is it appropriate that get_swap_pages() is
> > peeking at "cluster" to work
On Wed, Feb 07, 2018 at 03:00:35PM +0800, Huang, Ying wrote:
> From: Huang Ying
>
> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> Page) and frontswap (via zswap) are both enabled, when memory goes low
> so that swap is triggered, segfault and memory corruption will occur
>
On (02/07/18 13:05), Andrew Morton wrote:
[..]
> hm. This is assuming that "cluster==true" means "this is thp swap".
> That's presently true, but is it appropriate that get_swap_pages() is
> peeking at "cluster" to work out why it is being called?
>
> Or would it be cleaner to do this in get_swa
Andrew Morton writes:
> On Wed, 7 Feb 2018 15:00:35 +0800 "Huang, Ying" wrote:
>
>> From: Huang Ying
>>
>> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
>> Page) and frontswap (via zswap) are both enabled, when memory goes low
>> so that swap is triggered, segfault and m
On Wed, 7 Feb 2018 15:00:35 +0800 "Huang, Ying" wrote:
> From: Huang Ying
>
> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> Page) and frontswap (via zswap) are both enabled, when memory goes low
> so that swap is triggered, segfault and memory corruption will occur
> in
On Wed, Feb 07, 2018 at 03:00:35PM +0800, Huang, Ying wrote:
> From: Huang Ying
>
> It was reported by Sergey Senozhatsky that if THP (Transparent Huge
> Page) and frontswap (via zswap) are both enabled, when memory goes low
> so that swap is triggered, segfault and memory corruption will occur
>
From: Huang Ying
It was reported by Sergey Senozhatsky that if THP (Transparent Huge
Page) and frontswap (via zswap) are both enabled, when memory goes low
so that swap is triggered, segfault and memory corruption will occur
in random user space applications as follow,
kernel: urxvt[338]: segfau
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