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Subject[PATCH v7 05/14] mm,hwpoison: refactor madvise_inject_error
Date
Make a proper if-else condition for {hard,soft}-offline.

[akpm: refactor comment]
Signed-off-by: Oscar Salvador <osalvador@suse.de>
---
mm/madvise.c | 30 ++++++++++++++----------------
1 file changed, 14 insertions(+), 16 deletions(-)

diff --git a/mm/madvise.c b/mm/madvise.c
index 9b065d412e5f..f3a86d547ceb 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -872,7 +872,6 @@ static long madvise_remove(struct vm_area_struct *vma,
static int madvise_inject_error(int behavior,
unsigned long start, unsigned long end)
{
- struct page *page;
struct zone *zone;
unsigned long size;

@@ -881,6 +880,7 @@ static int madvise_inject_error(int behavior,


for (; start < end; start += size) {
+ struct page *page;
unsigned long pfn;
int ret;

@@ -903,25 +903,23 @@ static int madvise_inject_error(int behavior,

if (behavior == MADV_SOFT_OFFLINE) {
pr_info("Soft offlining pfn %#lx at process virtual address %#lx\n",
- pfn, start);
+ pfn, start);

ret = soft_offline_page(pfn, MF_COUNT_INCREASED);
- if (ret)
- return ret;
- continue;
+ } else {
+ pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n",
+ pfn, start);
+ /*
+ * Drop the page reference taken by
+ * get_user_pages_fast(). In the absence of
+ * MF_COUNT_INCREASED the memory_failure() routine is
+ * responsible for pinning the page to prevent it
+ * from being released back to the page allocator.
+ */
+ put_page(page);
+ ret = memory_failure(pfn, 0);
}

- pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n",
- pfn, start);
-
- /*
- * Drop the page reference taken by get_user_pages_fast(). In
- * the absence of MF_COUNT_INCREASED the memory_failure()
- * routine is responsible for pinning the page to prevent it
- * from being released back to the page allocator.
- */
- put_page(page);
- ret = memory_failure(pfn, 0);
if (ret)
return ret;
}
--
2.26.2
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