The patch titled
Subject: mm/rmap.c: use the pra.mapcount to do the check
has been added to the -mm tree. Its filename is
mm-rmap-use-the-pramapcount-to-do-the-check.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-rmap-use-the-pramapcount-to-do-the-check.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-rmap-use-the-pramapcount-to-do-the-check.patch
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------------------------------------------------------
From: Huang Shijie <sjhuang@xxxxxxxxxxx>
Subject: mm/rmap.c: use the pra.mapcount to do the check
We have the pra.mapcount already, and there is no need to call the
page_mapped() which may do some complicated computing for compound page.
Link: http://lkml.kernel.org/r/20190404054828.2731-1-sjhuang@xxxxxxxxxxx
Signed-off-by: Huang Shijie <sjhuang@xxxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/rmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/rmap.c~mm-rmap-use-the-pramapcount-to-do-the-check
+++ a/mm/rmap.c
@@ -850,7 +850,7 @@ int page_referenced(struct page *page,
};
*vm_flags = 0;
- if (!page_mapped(page))
+ if (!pra.mapcount)
return 0;
if (!page_rmapping(page))
_
Patches currently in -mm which might be from sjhuang@xxxxxxxxxxx are
mm-rmap-use-the-pramapcount-to-do-the-check.patch
lib-genallocc-export-symbol-addr_in_gen_pool.patch
lib-genallocc-rename-addr_in_gen_pool-to-gen_pool_has_addr.patch
lib-genallocc-rename-addr_in_gen_pool-to-gen_pool_has_addr-fix.patch
