The patch titled
Subject: mm,madvise: refactor madvise_inject_error
has been added to the -mm tree. Its filename is
mmmadvise-refactor-madvise_inject_error.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmmadvise-refactor-madvise_inject_error.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmmadvise-refactor-madvise_inject_error.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm,madvise: refactor madvise_inject_error
Make a proper if-else condition for {hard,soft}-offline.
Link: http://lkml.kernel.org/r/20200624150137.7052-5-nao.horiguchi@xxxxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Dmitry Yakunin <zeil@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/madvise.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
--- a/mm/madvise.c~mmmadvise-refactor-madvise_inject_error
+++ a/mm/madvise.c
@@ -869,16 +869,15 @@ static long madvise_remove(struct vm_are
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 beha
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;
}
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mmmadvise-refactor-madvise_inject_error.patch
mmhwpoison-un-export-get_hwpoison_page-and-make-it-static.patch
mmhwpoison-kill-put_hwpoison_page.patch
mmhwpoison-unify-thp-handling-for-hard-and-soft-offline.patch
mmhwpoison-rework-soft-offline-for-free-pages.patch
mmhwpoison-rework-soft-offline-for-in-use-pages.patch
mmhwpoison-refactor-soft_offline_huge_page-and-__soft_offline_page.patch
mmhwpoison-return-0-if-the-page-is-already-poisoned-in-soft-offline.patch
