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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-12 10:15:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-12 10:15:10 -0700
commit1021a645344d4a77333e19e60d37b9343be0d7b7 (patch)
tree7a78ab55f27f97209ed1b85ccfd88c6d5b8416d3 /include/linux
parent7367f5b013fee33f7d40a5a10a39d5134f529ec8 (diff)
parent28957a5467bab9ed51a237d21e31055fad987887 (diff)
Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: hugetlb: add missing unlock in avoidcopy path in hugetlb_cow() hwpoison: rename CONFIG HWPOISON, hugetlb: support hwpoison injection for hugepage HWPOISON, hugetlb: detect hwpoison in hugetlb code HWPOISON, hugetlb: isolate corrupted hugepage HWPOISON, hugetlb: maintain mce_bad_pages in handling hugepage error HWPOISON, hugetlb: set/clear PG_hwpoison bits on hugepage HWPOISON, hugetlb: enable error handling path for hugepage hugetlb, rmap: add reverse mapping for hugepage hugetlb: move definition of is_vm_hugetlb_page() to hugepage_inline.h Fix up trivial conflicts in mm/memory-failure.c
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/hugetlb.h14
-rw-r--r--include/linux/hugetlb_inline.h22
-rw-r--r--include/linux/pagemap.h9
-rw-r--r--include/linux/poison.h9
-rw-r--r--include/linux/rmap.h5
5 files changed, 39 insertions, 20 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 78b4bc64c006..f479700df61b 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -2,6 +2,7 @@
#define _LINUX_HUGETLB_H
#include <linux/fs.h>
+#include <linux/hugetlb_inline.h>
struct ctl_table;
struct user_struct;
@@ -14,11 +15,6 @@ struct user_struct;
int PageHuge(struct page *page);
-static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
-{
- return vma->vm_flags & VM_HUGETLB;
-}
-
void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
@@ -47,6 +43,7 @@ int hugetlb_reserve_pages(struct inode *inode, long from, long to,
struct vm_area_struct *vma,
int acctflags);
void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed);
+void __isolate_hwpoisoned_huge_page(struct page *page);
extern unsigned long hugepages_treat_as_movable;
extern const unsigned long hugetlb_zero, hugetlb_infinity;
@@ -77,11 +74,6 @@ static inline int PageHuge(struct page *page)
return 0;
}
-static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
-{
- return 0;
-}
-
static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
{
}
@@ -108,6 +100,8 @@ static inline void hugetlb_report_meminfo(struct seq_file *m)
#define is_hugepage_only_range(mm, addr, len) 0
#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 __isolate_hwpoisoned_huge_page(page) 0
#define hugetlb_change_protection(vma, address, end, newprot)
diff --git a/include/linux/hugetlb_inline.h b/include/linux/hugetlb_inline.h
new file mode 100644
index 000000000000..6931489a5c14
--- /dev/null
+++ b/include/linux/hugetlb_inline.h
@@ -0,0 +1,22 @@
+#ifndef _LINUX_HUGETLB_INLINE_H
+#define _LINUX_HUGETLB_INLINE_H
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#include <linux/mm.h>
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+ return vma->vm_flags & VM_HUGETLB;
+}
+
+#else
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+ return 0;
+}
+
+#endif
+
+#endif
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 78a702ce4fcb..e12cdc6d79ee 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -13,6 +13,7 @@
#include <linux/gfp.h>
#include <linux/bitops.h>
#include <linux/hardirq.h> /* for in_interrupt() */
+#include <linux/hugetlb_inline.h>
/*
* Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page
@@ -281,10 +282,16 @@ static inline loff_t page_offset(struct page *page)
return ((loff_t)page->index) << PAGE_CACHE_SHIFT;
}
+extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
+ unsigned long address);
+
static inline pgoff_t linear_page_index(struct vm_area_struct *vma,
unsigned long address)
{
- pgoff_t pgoff = (address - vma->vm_start) >> PAGE_SHIFT;
+ pgoff_t pgoff;
+ if (unlikely(is_vm_hugetlb_page(vma)))
+ return linear_hugepage_index(vma, address);
+ pgoff = (address - vma->vm_start) >> PAGE_SHIFT;
pgoff += vma->vm_pgoff;
return pgoff >> (PAGE_CACHE_SHIFT - PAGE_SHIFT);
}
diff --git a/include/linux/poison.h b/include/linux/poison.h
index 34066ffd893d..2110a81c5e2a 100644
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -48,15 +48,6 @@
#define POISON_FREE 0x6b /* for use-after-free poisoning */
#define POISON_END 0xa5 /* end-byte of poisoning */
-/********** mm/hugetlb.c **********/
-/*
- * Private mappings of hugetlb pages use this poisoned value for
- * page->mapping. The core VM should not be doing anything with this mapping
- * but futex requires the existence of some page->mapping value even though it
- * is unused if PAGE_MAPPING_ANON is set.
- */
-#define HUGETLB_POISON ((void *)(0x00300300 + POISON_POINTER_DELTA + PAGE_MAPPING_ANON))
-
/********** arch/$ARCH/mm/init.c **********/
#define POISON_FREE_INITMEM 0xcc
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index d6661de56f30..31b2fd75dcba 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -168,6 +168,11 @@ void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned lon
void page_add_file_rmap(struct page *);
void page_remove_rmap(struct page *);
+void hugepage_add_anon_rmap(struct page *, struct vm_area_struct *,
+ unsigned long);
+void hugepage_add_new_anon_rmap(struct page *, struct vm_area_struct *,
+ unsigned long);
+
static inline void page_dup_rmap(struct page *page)
{
atomic_inc(&page->_mapcount);