[v3,04/15] mm,madvise: Refactor madvise_inject_error

Commit Message

Naoya Horiguchi June 24, 2020, 3:01 p.m. UTC

From: Oscar Salvador <[e-mail]>

Make a proper if-else condition for {hard,soft}-offline.

Signed-off-by: Oscar Salvador <[e-mail]>
Signed-off-by: Naoya Horiguchi <[e-mail]>
---
 mm/madvise.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

Patch

diff --git v5.8-rc1-mmots-2020-06-20-21-44/mm/madvise.c v5.8-rc1-mmots-2020-06-20-21-44_patched/mm/madvise.c
index 275b08edd428..bee1f4ac70d6 100644
--- v5.8-rc1-mmots-2020-06-20-21-44/mm/madvise.c
+++ v5.8-rc1-mmots-2020-06-20-21-44_patched/mm/madvise.c
@@ -869,16 +869,15 @@  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;
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
-
 	for (; start < end; start += size) {
 		unsigned long pfn;
+		struct page *page;
 		int ret;
 
 		ret = get_user_pages_fast(start, 1, 0, &page);
@@ -908,17 +907,14 @@  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, 0);
-			if (ret)
-				return ret;
-			continue;
+		} else {
+			pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n",
+				pfn, start);
+			ret = memory_failure(pfn, 0);
 		}
 
-		pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n",
-				pfn, start);
-		ret = memory_failure(pfn, 0);
 		if (ret)
 			return ret;
 	}