summaryrefslogtreecommitdiffstats
path: root/mm/memory-failure.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/memory-failure.c')
-rw-r--r--mm/memory-failure.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 82ac734..22d2b20 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -34,6 +34,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/page-flags.h>
+#include <linux/kernel-page-flags.h>
#include <linux/sched.h>
#include <linux/ksm.h>
#include <linux/rmap.h>
@@ -50,8 +51,12 @@ atomic_long_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0);
u32 hwpoison_filter_dev_major = ~0U;
u32 hwpoison_filter_dev_minor = ~0U;
+u64 hwpoison_filter_flags_mask;
+u64 hwpoison_filter_flags_value;
EXPORT_SYMBOL_GPL(hwpoison_filter_dev_major);
EXPORT_SYMBOL_GPL(hwpoison_filter_dev_minor);
+EXPORT_SYMBOL_GPL(hwpoison_filter_flags_mask);
+EXPORT_SYMBOL_GPL(hwpoison_filter_flags_value);
static int hwpoison_filter_dev(struct page *p)
{
@@ -83,11 +88,26 @@ static int hwpoison_filter_dev(struct page *p)
return 0;
}
+static int hwpoison_filter_flags(struct page *p)
+{
+ if (!hwpoison_filter_flags_mask)
+ return 0;
+
+ if ((stable_page_flags(p) & hwpoison_filter_flags_mask) ==
+ hwpoison_filter_flags_value)
+ return 0;
+ else
+ return -EINVAL;
+}
+
int hwpoison_filter(struct page *p)
{
if (hwpoison_filter_dev(p))
return -EINVAL;
+ if (hwpoison_filter_flags(p))
+ return -EINVAL;
+
return 0;
}
EXPORT_SYMBOL_GPL(hwpoison_filter);
OpenPOWER on IntegriCloud