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| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2016-01-15 16:51:39 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 17:56:32 -0800 |
| commit | c13985fa800312fdcd4c7d67a1f55abcbc2f6b7d (patch) | |
| tree | c91b57810f05c3f189fb969e912a0cdca6c087f9 /include/linux/page-flags.h | |
| parent | page-flags: define behavior SL*B-related flags on compound pages (diff) | |
| download | wireguard-linux-c13985fa800312fdcd4c7d67a1f55abcbc2f6b7d.tar.xz wireguard-linux-c13985fa800312fdcd4c7d67a1f55abcbc2f6b7d.zip | |
page-flags: define behavior of Xen-related flags on compound pages
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>
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.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 29d8805aaa23..6e7c7c66b6ca 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -269,9 +269,13 @@ 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) |