nfsd4: fix filehandle comment

[safe/jmp/linux-2.6] / fs / proc / page.c

diff --git a/fs/proc/page.c b/fs/proc/page.c
index 2707c6c..180cf5a 100644 (file)
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -2,11 +2,13 @@
 #include <linux/compiler.h>
 #include <linux/fs.h>
 #include <linux/init.h>
+#include <linux/ksm.h>
 #include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/hugetlb.h>
+#include <linux/kernel-page-flags.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 
@@ -70,49 +72,12 @@ static const struct file_operations proc_kpagecount_operations = {
  * physical page flags.
  */
 
-/* These macros are used to decouple internal flags from exported ones */
-
-#define KPF_LOCKED             0
-#define KPF_ERROR              1
-#define KPF_REFERENCED         2
-#define KPF_UPTODATE           3
-#define KPF_DIRTY              4
-#define KPF_LRU                        5
-#define KPF_ACTIVE             6
-#define KPF_SLAB               7
-#define KPF_WRITEBACK          8
-#define KPF_RECLAIM            9
-#define KPF_BUDDY              10
-
-/* 11-20: new additions in 2.6.31 */
-#define KPF_MMAP               11
-#define KPF_ANON               12
-#define KPF_SWAPCACHE          13
-#define KPF_SWAPBACKED         14
-#define KPF_COMPOUND_HEAD      15
-#define KPF_COMPOUND_TAIL      16
-#define KPF_HUGE               17
-#define KPF_UNEVICTABLE                18
-#define KPF_NOPAGE             20
-
-/* kernel hacking assistances
- * WARNING: subject to change, never rely on them!
- */
-#define KPF_RESERVED           32
-#define KPF_MLOCKED            33
-#define KPF_MAPPEDTODISK       34
-#define KPF_PRIVATE            35
-#define KPF_PRIVATE_2          36
-#define KPF_OWNER_PRIVATE      37
-#define KPF_ARCH               38
-#define KPF_UNCACHED           39
-
 static inline u64 kpf_copy_bit(u64 kflags, int ubit, int kbit)
 {
        return ((kflags >> kbit) & 1) << ubit;
 }
 
-static u64 get_uflags(struct page *page)
+u64 stable_page_flags(struct page *page)
 {
        u64 k;
        u64 u;
@@ -137,6 +102,8 @@ static u64 get_uflags(struct page *page)
                u |= 1 << KPF_MMAP;
        if (PageAnon(page))
                u |= 1 << KPF_ANON;
+       if (PageKsm(page))
+               u |= 1 << KPF_KSM;
 
        /*
         * compound pages: export both head/tail info
@@ -175,6 +142,10 @@ static u64 get_uflags(struct page *page)
        u |= kpf_copy_bit(k, KPF_UNEVICTABLE,   PG_unevictable);
        u |= kpf_copy_bit(k, KPF_MLOCKED,       PG_mlocked);
 
+#ifdef CONFIG_MEMORY_FAILURE
+       u |= kpf_copy_bit(k, KPF_HWPOISON,      PG_hwpoison);
+#endif
+
 #ifdef CONFIG_IA64_UNCACHED_ALLOCATOR
        u |= kpf_copy_bit(k, KPF_UNCACHED,      PG_uncached);
 #endif
@@ -209,7 +180,7 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf,
                else
                        ppage = NULL;
 
-               if (put_user(get_uflags(ppage), out)) {
+               if (put_user(stable_page_flags(ppage), out)) {
                        ret = -EFAULT;
                        break;
                }