The patch titled
Subject: mm: thp: fix build of reuse_swap_page with CONFIG_SWAP=n
has been added to the -mm tree. Its filename is
mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix.patch
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------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: mm: thp: fix build of reuse_swap_page with CONFIG_SWAP=n
page_trans_huge_compound is inline defined in mm.h. reuse_swap_page is
calling page_trans_huge_compound in swap.h which included early on by
mm.h before page_trans_huge_compound is defined.
This is why reuse_swap_page was a preprocessor macro, so make it a
preprocessor macro again.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/swap.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff -puN include/linux/swap.h~mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix include/linux/swap.h
--- a/include/linux/swap.h~mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix
+++ a/include/linux/swap.h
@@ -513,10 +513,8 @@ static inline int swp_swapcount(swp_entr
return 0;
}
-static inline bool reuse_swap_page(struct page *page, int *total_mapcount)
-{
- return page_trans_huge_mapcount(page, total_mapcount) == 1;
-}
+#define reuse_swap_page(page, total_mapcount) \
+ (page_trans_huge_mapcount(page, total_mapcount) == 1)
static inline int try_to_free_swap(struct page *page)
{
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults.patch
mm-thp-calculate-the-mapcount-correctly-for-thp-pages-during-wp-faults-fix.patch
mm-thp-microoptimize-compound_mapcount.patch
mm-thp-split_huge_pmd_address-comment-improvement.patch
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