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Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h56
1 files changed, 50 insertions, 6 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f945dff34925..3ad632366973 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -386,17 +386,19 @@ struct vm_operations_struct {
void (*close)(struct vm_area_struct * area);
int (*split)(struct vm_area_struct * area, unsigned long addr);
int (*mremap)(struct vm_area_struct * area);
- int (*fault)(struct vm_fault *vmf);
- int (*huge_fault)(struct vm_fault *vmf, enum page_entry_size pe_size);
+ vm_fault_t (*fault)(struct vm_fault *vmf);
+ vm_fault_t (*huge_fault)(struct vm_fault *vmf,
+ enum page_entry_size pe_size);
void (*map_pages)(struct vm_fault *vmf,
pgoff_t start_pgoff, pgoff_t end_pgoff);
+ unsigned long (*pagesize)(struct vm_area_struct * area);
/* notification that a previously read-only page is about to become
* writable, if an error is returned it will cause a SIGBUS */
- int (*page_mkwrite)(struct vm_fault *vmf);
+ vm_fault_t (*page_mkwrite)(struct vm_fault *vmf);
/* same as page_mkwrite when using VM_PFNMAP|VM_MIXEDMAP */
- int (*pfn_mkwrite)(struct vm_fault *vmf);
+ vm_fault_t (*pfn_mkwrite)(struct vm_fault *vmf);
/* called by access_process_vm when get_user_pages() fails, typically
* for use by special VMAs that can switch between memory and hardware
@@ -903,7 +905,9 @@ extern int page_to_nid(const struct page *page);
#else
static inline int page_to_nid(const struct page *page)
{
- return (page->flags >> NODES_PGSHIFT) & NODES_MASK;
+ struct page *p = (struct page *)page;
+
+ return (PF_POISONED_CHECK(p)->flags >> NODES_PGSHIFT) & NODES_MASK;
}
#endif
@@ -1152,6 +1156,7 @@ static inline pgoff_t page_index(struct page *page)
bool page_mapped(struct page *page);
struct address_space *page_mapping(struct page *page);
+struct address_space *page_mapping_file(struct page *page);
/*
* Return true only if the page has been allocated with
@@ -2420,6 +2425,44 @@ int vm_insert_mixed_mkwrite(struct vm_area_struct *vma, unsigned long addr,
pfn_t pfn);
int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start, unsigned long len);
+static inline vm_fault_t vmf_insert_page(struct vm_area_struct *vma,
+ unsigned long addr, struct page *page)
+{
+ int err = vm_insert_page(vma, addr, page);
+
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+ if (err < 0 && err != -EBUSY)
+ return VM_FAULT_SIGBUS;
+
+ return VM_FAULT_NOPAGE;
+}
+
+static inline vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma,
+ unsigned long addr, pfn_t pfn)
+{
+ int err = vm_insert_mixed(vma, addr, pfn);
+
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+ if (err < 0 && err != -EBUSY)
+ return VM_FAULT_SIGBUS;
+
+ return VM_FAULT_NOPAGE;
+}
+
+static inline vm_fault_t vmf_insert_pfn(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long pfn)
+{
+ int err = vm_insert_pfn(vma, addr, pfn);
+
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+ if (err < 0 && err != -EBUSY)
+ return VM_FAULT_SIGBUS;
+
+ return VM_FAULT_NOPAGE;
+}
struct page *follow_page_mask(struct vm_area_struct *vma,
unsigned long address, unsigned int foll_flags,
@@ -2589,7 +2632,7 @@ extern int get_hwpoison_page(struct page *page);
extern int sysctl_memory_failure_early_kill;
extern int sysctl_memory_failure_recovery;
extern void shake_page(struct page *p, int access);
-extern atomic_long_t num_poisoned_pages;
+extern atomic_long_t num_poisoned_pages __read_mostly;
extern int soft_offline_page(struct page *page, int flags);
@@ -2611,6 +2654,7 @@ enum mf_action_page_type {
MF_MSG_POISONED_HUGE,
MF_MSG_HUGE,
MF_MSG_FREE_HUGE,
+ MF_MSG_NON_PMD_HUGE,
MF_MSG_UNMAP_FAILED,
MF_MSG_DIRTY_SWAPCACHE,
MF_MSG_CLEAN_SWAPCACHE,