Re: [PATCH 3/3] mm: catch memory commitment underflow

2015-06-07 Thread Sasha Levin
On 04/24/2015 10:15 PM, Sasha Levin wrote: > On 01/18/2015 01:36 PM, Konstantin Khlebnikov wrote: >> On Sun, Jan 18, 2015 at 2:34 PM, Sasha Levin wrote: >>> On 06/24/2014 04:16 PM, Konstantin Khlebnikov wrote: This patch prints warning (if CONFIG_DEBUG_VM=y) when memory commitment become

Re: [PATCH 3/3] mm: catch memory commitment underflow

2015-04-24 Thread Sasha Levin
On 01/18/2015 01:36 PM, Konstantin Khlebnikov wrote: > On Sun, Jan 18, 2015 at 2:34 PM, Sasha Levin wrote: >> On 06/24/2014 04:16 PM, Konstantin Khlebnikov wrote: >>> This patch prints warning (if CONFIG_DEBUG_VM=y) when >>> memory commitment becomes too negative. >>> >>> Signed-off-by: Konstantin

Re: [PATCH 3/3] mm: catch memory commitment underflow

2015-01-18 Thread Konstantin Khlebnikov
On Sun, Jan 18, 2015 at 2:34 PM, Sasha Levin wrote: > On 06/24/2014 04:16 PM, Konstantin Khlebnikov wrote: >> This patch prints warning (if CONFIG_DEBUG_VM=y) when >> memory commitment becomes too negative. >> >> Signed-off-by: Konstantin Khlebnikov > > Hi Konstantin, > > I seem to be hitting thi

Re: [PATCH 3/3] mm: catch memory commitment underflow

2015-01-18 Thread Sasha Levin
On 06/24/2014 04:16 PM, Konstantin Khlebnikov wrote: > This patch prints warning (if CONFIG_DEBUG_VM=y) when > memory commitment becomes too negative. > > Signed-off-by: Konstantin Khlebnikov Hi Konstantin, I seem to be hitting this warning when fuzzing on the latest -next kernel: [ 683.67432

Re: [PATCH 3/3] mm: catch memory commitment underflow

2014-06-25 Thread Konstantin Khlebnikov
On Thu, Jun 26, 2014 at 2:03 AM, Andrew Morton wrote: > On Wed, 25 Jun 2014 00:16:14 +0400 Konstantin Khlebnikov > wrote: > >> This patch prints warning (if CONFIG_DEBUG_VM=y) when >> memory commitment becomes too negative. >> >> ... >> >> --- a/mm/mmap.c >> +++ b/mm/mmap.c >> @@ -134,6 +134,12

Re: [PATCH 3/3] mm: catch memory commitment underflow

2014-06-25 Thread Dave Hansen
On 06/24/2014 01:16 PM, Konstantin Khlebnikov wrote: > reserve; > > +#ifdef CONFIG_DEBUG_VM > + WARN_ONCE(percpu_counter_read(&vm_committed_as) < > + -(s64)vm_committed_as_batch * num_online_cpus(), > + "memory commitment underflow"); > +#endif Why not

Re: [PATCH 3/3] mm: catch memory commitment underflow

2014-06-25 Thread Andrew Morton
On Wed, 25 Jun 2014 00:16:14 +0400 Konstantin Khlebnikov wrote: > This patch prints warning (if CONFIG_DEBUG_VM=y) when > memory commitment becomes too negative. > > ... > > --- a/mm/mmap.c > +++ b/mm/mmap.c > @@ -134,6 +134,12 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, > int

[PATCH 3/3] mm: catch memory commitment underflow

2014-06-24 Thread Konstantin Khlebnikov
This patch prints warning (if CONFIG_DEBUG_VM=y) when memory commitment becomes too negative. Signed-off-by: Konstantin Khlebnikov --- mm/mmap.c |6 ++ 1 file changed, 6 insertions(+) diff --git a/mm/mmap.c b/mm/mmap.c index 129b847..d3decd9 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -13