Messages in this thread Patch in this message | | | From | "Kirill A. Shutemov" <> | Subject | [PATCH 08/16] page-flags: define behavior of Xen-related flags on compound pages | Date | Thu, 24 Sep 2015 17:50:56 +0300 |
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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 PF_NO_COMPOUND for all of them.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- include/linux/page-flags.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index c9cd82310e2d..adaa2b39f471 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -257,9 +257,13 @@ PAGEFLAG(Active, active, PF_HEAD) __CLEARPAGEFLAG(Active, active, PF_HEAD) __PAGEFLAG(Slab, slab, PF_NO_TAIL) __PAGEFLAG(SlobFree, slob_free, PF_NO_TAIL) PAGEFLAG(Checked, checked, PF_NO_COMPOUND) /* Used by some filesystems */ -PAGEFLAG(Pinned, pinned, PF_ANY) TESTSCFLAG(Pinned, pinned, PF_ANY) /* Xen */ -PAGEFLAG(SavePinned, savepinned, PF_ANY); /* Xen */ -PAGEFLAG(Foreign, foreign, PF_ANY); /* Xen */ + +/* Xen */ +PAGEFLAG(Pinned, pinned, PF_NO_COMPOUND) + TESTSCFLAG(Pinned, pinned, PF_NO_COMPOUND) +PAGEFLAG(SavePinned, savepinned, PF_NO_COMPOUND); +PAGEFLAG(Foreign, foreign, PF_NO_COMPOUND); + PAGEFLAG(Reserved, reserved, PF_ANY) __CLEARPAGEFLAG(Reserved, reserved, PF_ANY) PAGEFLAG(SwapBacked, swapbacked, PF_ANY) __CLEARPAGEFLAG(SwapBacked, swapbacked, PF_ANY) -- 2.5.1
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