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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2016-01-15 16:51:46 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-15 17:56:32 -0800
commitda5efc408baefd686b0ee2cbd1353eb10ec71a0f (patch)
tree3dda0c2226ba8d05270b5e752898443ad0098ef4 /include/linux/page-flags.h
parentde09d31dd38a50fdce106c15abd68432eebbd014 (diff)
page-flags: define PG_swapbacked behavior on compound pages
PG_swapbacked is used for transparent huge pages. For head pages only. Let's use PF_NO_TAIL policy. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Jérôme Glisse <jglisse@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index dbfd8f325f98..eda487ecc01c 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -278,9 +278,9 @@ PAGEFLAG(Foreign, foreign, PF_NO_COMPOUND);
PAGEFLAG(Reserved, reserved, PF_NO_COMPOUND)
__CLEARPAGEFLAG(Reserved, reserved, PF_NO_COMPOUND)
-PAGEFLAG(SwapBacked, swapbacked, PF_ANY)
- __CLEARPAGEFLAG(SwapBacked, swapbacked, PF_ANY)
- __SETPAGEFLAG(SwapBacked, swapbacked, PF_ANY)
+PAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL)
+ __CLEARPAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL)
+ __SETPAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL)
/*
* Private page markings that may be used by the filesystem that owns the page