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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2012-07-31 16:42:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 18:42:40 -0700
commit24669e58477e2752c1fbca9c1c988e9dd0d79d15 (patch)
treea4fe04fc1cc2b5a2d89b67f745185b9e9640426f /include/linux/hugetlb.h
parent972dc4de13f667a7df27ee32573b2e6fc6cc8434 (diff)
downloadop-kernel-dev-24669e58477e2752c1fbca9c1c988e9dd0d79d15.zip
op-kernel-dev-24669e58477e2752c1fbca9c1c988e9dd0d79d15.tar.gz
hugetlb: use mmu_gather instead of a temporary linked list for accumulating pages
Use a mmu_gather instead of a temporary linked list for accumulating pages when we unmap a hugepage range Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/hugetlb.h')
-rw-r--r--include/linux/hugetlb.h22
1 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 217f528..0f23c18 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -7,6 +7,7 @@
struct ctl_table;
struct user_struct;
+struct mmu_gather;
#ifdef CONFIG_HUGETLB_PAGE
@@ -40,9 +41,10 @@ int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
struct page **, struct vm_area_struct **,
unsigned long *, int *, int, unsigned int flags);
void unmap_hugepage_range(struct vm_area_struct *,
- unsigned long, unsigned long, struct page *);
-void __unmap_hugepage_range(struct vm_area_struct *,
- unsigned long, unsigned long, struct page *);
+ unsigned long, unsigned long, struct page *);
+void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct page *ref_page);
int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
void hugetlb_report_meminfo(struct seq_file *);
int hugetlb_report_node_meminfo(int, char *);
@@ -98,7 +100,6 @@ static inline unsigned long hugetlb_total_pages(void)
#define follow_huge_addr(mm, addr, write) ERR_PTR(-EINVAL)
#define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; })
#define hugetlb_prefault(mapping, vma) ({ BUG(); 0; })
-#define unmap_hugepage_range(vma, start, end, page) BUG()
static inline void hugetlb_report_meminfo(struct seq_file *m)
{
}
@@ -112,13 +113,24 @@ static inline void hugetlb_report_meminfo(struct seq_file *m)
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
#define hugetlb_fault(mm, vma, addr, flags) ({ BUG(); 0; })
#define huge_pte_offset(mm, address) 0
-#define dequeue_hwpoisoned_huge_page(page) 0
+static inline int dequeue_hwpoisoned_huge_page(struct page *page)
+{
+ return 0;
+}
+
static inline void copy_huge_page(struct page *dst, struct page *src)
{
}
#define hugetlb_change_protection(vma, address, end, newprot)
+static inline void __unmap_hugepage_range(struct mmu_gather *tlb,
+ struct vm_area_struct *vma, unsigned long start,
+ unsigned long end, struct page *ref_page)
+{
+ BUG();
+}
+
#endif /* !CONFIG_HUGETLB_PAGE */
#define HUGETLB_ANON_FILE "anon_hugepage"
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