On Fri, Oct 26, 2012 at 04:07:44PM +0200, Peter Zijlstra wrote:
> On Fri, 2012-10-26 at 16:57 +0300, Kirill A. Shutemov wrote:
> > > > Yes, this code will catch it:
> > > >
> > > > /* if an huge pmd materialized from under us just retry later */
> > > > if (unlikely(pmd_trans_huge(*pmd)))
On Fri, 2012-10-26 at 16:57 +0300, Kirill A. Shutemov wrote:
> > > Yes, this code will catch it:
> > >
> > > /* if an huge pmd materialized from under us just retry later */
> > > if (unlikely(pmd_trans_huge(*pmd)))
> > > return 0;
> > >
> > > If the pmd is under splitting
On Fri, Oct 26, 2012 at 03:43:12PM +0200, Peter Zijlstra wrote:
> On Fri, 2012-10-26 at 16:41 +0300, Kirill A. Shutemov wrote:
> > On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
> > > On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
> > > > From: "Kirill A. Shutemov"
On Fri, 2012-10-26 at 16:41 +0300, Kirill A. Shutemov wrote:
> On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
> > On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
> > > From: "Kirill A. Shutemov"
> > >
> > > We check if the pmd entry is the same as on
On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
> On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
> > From: "Kirill A. Shutemov"
> >
> > We check if the pmd entry is the same as on pmd_trans_huge() in
> > handle_mm_fault(). That's enough.
> >
> > Signed-off-by:
On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
> From: "Kirill A. Shutemov"
>
> We check if the pmd entry is the same as on pmd_trans_huge() in
> handle_mm_fault(). That's enough.
>
> Signed-off-by: Kirill A. Shutemov
Ah indeed, Will mentioned something like this on IRC as well,
From: "Kirill A. Shutemov"
We check if the pmd entry is the same as on pmd_trans_huge() in
handle_mm_fault(). That's enough.
Signed-off-by: Kirill A. Shutemov
---
mm/huge_memory.c |6 --
1 file changed, 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
We check if the pmd entry is the same as on pmd_trans_huge() in
handle_mm_fault(). That's enough.
Signed-off-by: Kirill A. Shutemov kirill.shute...@linux.intel.com
---
mm/huge_memory.c |6 --
1 file changed, 6 deletions(-)
diff
On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
We check if the pmd entry is the same as on pmd_trans_huge() in
handle_mm_fault(). That's enough.
Signed-off-by: Kirill A. Shutemov kirill.shute...@linux.intel.com
Ah
On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
We check if the pmd entry is the same as on pmd_trans_huge() in
handle_mm_fault(). That's enough.
On Fri, 2012-10-26 at 16:41 +0300, Kirill A. Shutemov wrote:
On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
We check if the pmd entry is the same as
On Fri, Oct 26, 2012 at 03:43:12PM +0200, Peter Zijlstra wrote:
On Fri, 2012-10-26 at 16:41 +0300, Kirill A. Shutemov wrote:
On Fri, Oct 26, 2012 at 03:08:05PM +0200, Peter Zijlstra wrote:
On Fri, 2012-10-26 at 15:54 +0300, Kirill A. Shutemov wrote:
From: Kirill A. Shutemov
On Fri, 2012-10-26 at 16:57 +0300, Kirill A. Shutemov wrote:
Yes, this code will catch it:
/* if an huge pmd materialized from under us just retry later */
if (unlikely(pmd_trans_huge(*pmd)))
return 0;
If the pmd is under splitting it's still a
On Fri, Oct 26, 2012 at 04:07:44PM +0200, Peter Zijlstra wrote:
On Fri, 2012-10-26 at 16:57 +0300, Kirill A. Shutemov wrote:
Yes, this code will catch it:
/* if an huge pmd materialized from under us just retry later */
if (unlikely(pmd_trans_huge(*pmd)))
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