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Subject[PATCH] [4/18] Add basic support for more than one hstate in hugetlbfs
Date

Signed-off-by: Andi Kleen <ak@suse.de>

---
mm/hugetlb.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)

Index: linux/mm/hugetlb.c
===================================================================
--- linux.orig/mm/hugetlb.c
+++ linux/mm/hugetlb.c
@@ -550,26 +550,33 @@ static unsigned int cpuset_mems_nr(unsig

#ifdef CONFIG_SYSCTL
#ifdef CONFIG_HIGHMEM
-static void try_to_free_low(unsigned long count)
+static void do_try_to_free_low(struct hstate *h, unsigned long count)
{
- struct hstate *h = &global_hstate;
int i;

for (i = 0; i < MAX_NUMNODES; ++i) {
struct page *page, *next;
struct list_head *freel = &h->hugepage_freelists[i];
list_for_each_entry_safe(page, next, freel, lru) {
- if (count >= nr_huge_pages)
+ if (count >= h->nr_huge_pages)
return;
if (PageHighMem(page))
continue;
list_del(&page->lru);
- update_and_free_page(page);
+ update_and_free_page(h, page);
h->free_huge_pages--;
h->free_huge_pages_node[page_to_nid(page)]--;
}
}
}
+
+static void try_to_free_low(unsigned long count)
+{
+ struct hstate *h;
+ for_each_hstate (h) {
+ do_try_to_free_low(h, count);
+ }
+}
#else
static inline void try_to_free_low(unsigned long count)
{

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