The patch titled
Subject: mm: hugetlb: add a new parameter for some functions
has been added to the -mm tree. Its filename is
mm-hugetlb-add-a-new-parameter-for-some-functions.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-add-a-new-parameter-for-some-functions.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-add-a-new-parameter-for-some-functions.patch
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------------------------------------------------------
From: Huang Shijie <shijie.huang@xxxxxxx>
Subject: mm: hugetlb: add a new parameter for some functions
Add a new parameter, the "no_init", to these functions:
alloc_fresh_gigantic_page_node()
alloc_fresh_gigantic_page()
prep_new_huge_page() does some initialization for the new page. But
sometimes we do not need it to do so, such as in the surplus case in a
later patch.
With this parameter, prep_new_huge_page() can be called by needed:
If the "no_init" is false, calls the prep_new_huge_page() in
the alloc_fresh_gigantic_page_node();
This is in preparation for later patches.
Link: http://lkml.kernel.org/r/1479107259-2011-3-git-send-email-shijie.huang@xxxxxxx
Signed-off-by: Huang Shijie <shijie.huang@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Kirill A . Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Steve Capper <steve.capper@xxxxxxx>
Cc: Kaly Xin <kaly.xin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff -puN mm/hugetlb.c~mm-hugetlb-add-a-new-parameter-for-some-functions mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-add-a-new-parameter-for-some-functions
+++ a/mm/hugetlb.c
@@ -1127,27 +1127,29 @@ static struct page *alloc_gigantic_page(
static void prep_new_huge_page(struct hstate *h, struct page *page, int nid);
static void prep_compound_gigantic_page(struct page *page, unsigned int order);
-static struct page *alloc_fresh_gigantic_page_node(struct hstate *h, int nid)
+static struct page *alloc_fresh_gigantic_page_node(struct hstate *h,
+ int nid, bool no_init)
{
struct page *page;
page = alloc_gigantic_page(nid, huge_page_order(h));
if (page) {
prep_compound_gigantic_page(page, huge_page_order(h));
- prep_new_huge_page(h, page, nid);
+ if (!no_init)
+ prep_new_huge_page(h, page, nid);
}
return page;
}
static int alloc_fresh_gigantic_page(struct hstate *h,
- nodemask_t *nodes_allowed)
+ nodemask_t *nodes_allowed, bool no_init)
{
struct page *page = NULL;
int nr_nodes, node;
for_each_node_mask_to_alloc(h, nr_nodes, node, nodes_allowed) {
- page = alloc_fresh_gigantic_page_node(h, node);
+ page = alloc_fresh_gigantic_page_node(h, node, no_init);
if (page)
return 1;
}
@@ -1166,7 +1168,7 @@ static inline void free_gigantic_page(st
static inline void destroy_compound_gigantic_page(struct page *page,
unsigned int order) { }
static inline int alloc_fresh_gigantic_page(struct hstate *h,
- nodemask_t *nodes_allowed) { return 0; }
+ nodemask_t *nodes_allowed, bool no_init) { return 0; }
#endif
static void update_and_free_page(struct hstate *h, struct page *page)
@@ -2313,7 +2315,8 @@ static unsigned long set_max_huge_pages(
cond_resched();
if (hstate_is_gigantic(h))
- ret = alloc_fresh_gigantic_page(h, nodes_allowed);
+ ret = alloc_fresh_gigantic_page(h, nodes_allowed,
+ false);
else
ret = alloc_fresh_huge_page(h, nodes_allowed);
spin_lock(&hugetlb_lock);
_
Patches currently in -mm which might be from shijie.huang@xxxxxxx are
mm-hugetlb-rename-some-allocation-functions.patch
mm-hugetlb-add-a-new-parameter-for-some-functions.patch
mm-hugetlb-change-the-return-type-for-alloc_fresh_gigantic_page.patch
mm-mempolicy-intruduce-a-helper-huge_nodemask.patch
mm-hugetlb-add-a-new-function-to-allocate-a-new-gigantic-page.patch
mm-hugetlb-support-gigantic-surplus-pages.patch
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