diff options
| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2012-12-12 13:51:02 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 17:38:31 -0800 |
| commit | 80371957f09814d25c38733d2d08de47f59a13c2 (patch) | |
| tree | 2ebdedfa3a10af22941e44729f1c4c2623e8da74 /lib/spinlock_debug.c | |
| parent | thp: implement splitting pmd for huge zero page (diff) | |
| download | linux-dev-80371957f09814d25c38733d2d08de47f59a13c2.tar.xz linux-dev-80371957f09814d25c38733d2d08de47f59a13c2.zip | |
thp: setup huge zero page on non-write page fault
All code paths seems covered. Now we can map huge zero page on read page
fault.
We setup it in do_huge_pmd_anonymous_page() if area around fault address
is suitable for THP and we've got read page fault.
If we fail to setup huge zero page (ENOMEM) we fallback to
handle_pte_fault() as we normally do in THP.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/spinlock_debug.c')
0 files changed, 0 insertions, 0 deletions