The patch titled
memcg: page_cgroup array is never stored on reserved pages
has been removed from the -mm tree. Its filename was
memcg-page_cgroup-array-is-never-stored-on-reserved-pages.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: memcg: page_cgroup array is never stored on reserved pages
From: Michal Hocko <mhocko@xxxxxxx>
KAMEZAWA Hiroyuki noted that free_pages_cgroup doesn't have to check for
PageReserved because we never store the array on reserved pages (neither
alloc_pages_exact nor vmalloc use those pages).
So we can replace the check by a BUG_ON.
Signed-off-by: Michal Hocko <mhocko@xxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_cgroup.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff -puN mm/page_cgroup.c~memcg-page_cgroup-array-is-never-stored-on-reserved-pages mm/page_cgroup.c
--- a/mm/page_cgroup.c~memcg-page_cgroup-array-is-never-stored-on-reserved-pages
+++ a/mm/page_cgroup.c
@@ -153,11 +153,11 @@ static void free_page_cgroup(void *addr)
vfree(addr);
} else {
struct page *page = virt_to_page(addr);
- if (!PageReserved(page)) { /* Is bootmem ? */
- size_t table_size =
- sizeof(struct page_cgroup) * PAGES_PER_SECTION;
- free_pages_exact(addr, table_size);
- }
+ size_t table_size =
+ sizeof(struct page_cgroup) * PAGES_PER_SECTION;
+
+ BUG_ON(PageReserved(page));
+ free_pages_exact(addr, table_size);
}
}
#endif
_
Patches currently in -mm which might be from mhocko@xxxxxxx are
origin.patch
memsw-remove-noswapaccount-kernel-parameter.patch
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