[PATCH 08/16] page-flags: define behavior of Xen-related flags on compound pages

[Kirill A. Shutemov]

PG_pinned and PG_savepinned are about page table's pages which are never
compound.

I'm not so sure about PG_foreign, but it seems we shouldn't see compound
pages there too.

Let's use NO_COMPOUND for all of them.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
 include/linux/page-flags.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index d41c63b566b8..19373c98d08a 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -282,9 +282,12 @@ PAGEFLAG(Active, active, HEAD) __CLEARPAGEFLAG(Active, active, HEAD)
 __PAGEFLAG(Slab, slab, NO_TAIL)
 __PAGEFLAG(SlobFree, slob_free, NO_TAIL)
 PAGEFLAG(Checked, checked, NO_COMPOUND) /* Used by some filesystems */
-PAGEFLAG(Pinned, pinned, ANY) TESTSCFLAG(Pinned, pinned, ANY)	/* Xen */
-PAGEFLAG(SavePinned, savepinned, ANY);			/* Xen */
-PAGEFLAG(Foreign, foreign, ANY);				/* Xen */
+
+/* Xen */
+PAGEFLAG(Pinned, pinned, NO_COMPOUND) TESTSCFLAG(Pinned, pinned, NO_COMPOUND)
+PAGEFLAG(SavePinned, savepinned, NO_COMPOUND)
+PAGEFLAG(Foreign, foreign, NO_COMPOUND)
+
 PAGEFLAG(Reserved, reserved, ANY) __CLEARPAGEFLAG(Reserved, reserved, ANY)
 PAGEFLAG(SwapBacked, swapbacked, ANY)
 	__CLEARPAGEFLAG(SwapBacked, swapbacked, ANY)
-- 
2.1.4

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