On Thu, 1 Nov 2012, Dave Jones wrote:
> On Thu, Nov 01, 2012 at 04:48:41PM -0700, Hugh Dickins wrote:
> >
> > Fedora turns on CONFIG_DEBUG_VM?
>
> Yes.
>
> > All mm developers should thank you for the wider testing exposure;
> > but I'm not so sure that Fedora users should thank you for
On Thu, 1 Nov 2012, Dave Jones wrote:
On Thu, Nov 01, 2012 at 04:48:41PM -0700, Hugh Dickins wrote:
Fedora turns on CONFIG_DEBUG_VM?
Yes.
All mm developers should thank you for the wider testing exposure;
but I'm not so sure that Fedora users should thank you for turning
it
On Thu, Nov 01, 2012 at 04:48:41PM -0700, Hugh Dickins wrote:
> On Thu, 1 Nov 2012, Dave Jones wrote:
> > On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
> > >
> > > Except... earlier in the thread you explained how you hacked
> > > #define VM_BUG_ON(cond) WARN_ON(cond)
> >
On Thu, 1 Nov 2012, Dave Jones wrote:
> On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
> >
> > Except... earlier in the thread you explained how you hacked
> > #define VM_BUG_ON(cond) WARN_ON(cond)
> > to get this to come out as a warning instead of a bug,
> > and now it looks
On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
> > I just noticed we had a user report hitting this same warning, but
> > with a different trace..
> >
> > : [] warn_slowpath_common+0x7f/0xc0
> > : [] warn_slowpath_null+0x1a/0x20
> > : [] shmem_getpage_gfp+0x7f3/0x830
> > :
On Thu, 1 Nov 2012, Dave Jones wrote:
> On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
> > On Wed, 24 Oct 2012, Dave Jones wrote:
> >
> > > Machine under significant load (4gb memory used, swap usage fluctuating)
> > > triggered this...
> > >
> > > WARNING: at
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
> On Wed, 24 Oct 2012, Dave Jones wrote:
>
> > Machine under significant load (4gb memory used, swap usage fluctuating)
> > triggered this...
> >
> > WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
> > Pid: 29795,
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm:
On Thu, 1 Nov 2012, Dave Jones wrote:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151
On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
I just noticed we had a user report hitting this same warning, but
with a different trace..
: [8105b84f] warn_slowpath_common+0x7f/0xc0
: [8105b8aa] warn_slowpath_null+0x1a/0x20
: [81143c73]
On Thu, 1 Nov 2012, Dave Jones wrote:
On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
Except... earlier in the thread you explained how you hacked
#define VM_BUG_ON(cond) WARN_ON(cond)
to get this to come out as a warning instead of a bug,
and now it looks as if a
On Thu, Nov 01, 2012 at 04:48:41PM -0700, Hugh Dickins wrote:
On Thu, 1 Nov 2012, Dave Jones wrote:
On Thu, Nov 01, 2012 at 04:03:40PM -0700, Hugh Dickins wrote:
Except... earlier in the thread you explained how you hacked
#define VM_BUG_ON(cond) WARN_ON(cond)
to get this
On 10/26/2012 05:48 AM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Johannes Weiner wrote:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at
On 10/26/2012 05:27 AM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 02:59 PM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
I think it maybe caused by your commit [d189922862e03ce: shmem: fix
negative
rss in memcg memory.stat], one question:
On Thu, 25 Oct 2012, Johannes Weiner wrote:
> On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
> > On Wed, 24 Oct 2012, Dave Jones wrote:
> >
> > > Machine under significant load (4gb memory used, swap usage fluctuating)
> > > triggered this...
> > >
> > > WARNING: at
On Thu, 25 Oct 2012, Dave Jones wrote:
> On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
>
> > Clutching at straws, I expect this is entirely irrelevant, but:
> > there isn't a warning on line 1151 of mm/shmem.c in 3.7.0-rc2 nor
> > in current linux.git; rather, there's a
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
> On 10/25/2012 02:59 PM, Hugh Dickins wrote:
> > On Thu, 25 Oct 2012, Ni zhan Chen wrote:
> > >
> > > I think it maybe caused by your commit [d189922862e03ce: shmem: fix
> > > negative
> > > rss in memcg memory.stat], one question:
> > Well, yes, I added
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
> On Wed, 24 Oct 2012, Dave Jones wrote:
>
> > Machine under significant load (4gb memory used, swap usage fluctuating)
> > triggered this...
> >
> > WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
> > Pid: 29795, comm:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
> > 1148 error = shmem_add_to_page_cache(page,
> > mapping, index,
> > 1149 gfp,
> > swp_to_radix_entry(swap));
> > 1150 /* We
On 10/25/2012 02:59 PM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 12:36 PM, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
> On 10/25/2012 12:36 PM, Hugh Dickins wrote:
> > On Wed, 24 Oct 2012, Dave Jones wrote:
> >
> > > Machine under significant load (4gb memory used, swap usage fluctuating)
> > > triggered this...
> > >
> > > WARNING: at mm/shmem.c:1151
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 12:36 PM, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
On 10/25/2012 02:59 PM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 12:36 PM, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
1148 error = shmem_add_to_page_cache(page,
mapping, index,
1149 gfp,
swp_to_radix_entry(swap));
1150 /* We already
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 02:59 PM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
I think it maybe caused by your commit [d189922862e03ce: shmem: fix
negative
rss in memcg memory.stat], one question:
Well, yes, I added the VM_BUG_ON in
On Thu, 25 Oct 2012, Dave Jones wrote:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
Clutching at straws, I expect this is entirely irrelevant, but:
there isn't a warning on line 1151 of mm/shmem.c in 3.7.0-rc2 nor
in current linux.git; rather, there's a VM_BUG_ON on
On Thu, 25 Oct 2012, Johannes Weiner wrote:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151
On 10/26/2012 05:27 AM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
On 10/25/2012 02:59 PM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Ni zhan Chen wrote:
I think it maybe caused by your commit [d189922862e03ce: shmem: fix
negative
rss in memcg memory.stat], one question:
On 10/26/2012 05:48 AM, Hugh Dickins wrote:
On Thu, 25 Oct 2012, Johannes Weiner wrote:
On Wed, Oct 24, 2012 at 09:36:27PM -0700, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at
On 10/25/2012 12:36 PM, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
On Wed, 24 Oct 2012, Dave Jones wrote:
> Machine under significant load (4gb memory used, swap usage fluctuating)
> triggered this...
>
> WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
> Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
> Call Trace:
> []
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
Call Trace:
[] warn_slowpath_common+0x7f/0xc0
[] warn_slowpath_null+0x1a/0x20
[]
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
Call Trace:
[8107100f] warn_slowpath_common+0x7f/0xc0
[8107106a]
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
Call Trace:
[8107100f]
On 10/25/2012 12:36 PM, Hugh Dickins wrote:
On Wed, 24 Oct 2012, Dave Jones wrote:
Machine under significant load (4gb memory used, swap usage fluctuating)
triggered this...
WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70()
Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49
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