From: Naoya Horiguchi <naoya.horigu...@nec.com>
hpage is never used after try_to_split_thp_page() in memory_failure(), so
we don't have to update hpage. So let's not recalculate/use hpage.
Signed-off-by: Naoya Horiguchi <naoya.horigu...@nec.com>
Signed-off-by: Oscar Salvador <osalva...@suse.de>
Suggested-by: "Aneesh Kumar K.V" <aneesh.ku...@linux.ibm.com>
Reviewed-by: Mike Kravetz <mike.krav...@oracle.com>
---
mm/memory-failure.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index b0eabc312381..0e6edffa91a9 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1341,7 +1341,6 @@ int memory_failure(unsigned long pfn, int flags)
}
unlock_page(p);
VM_BUG_ON_PAGE(!page_count(p), p);
- hpage = compound_head(p);
}
/*
@@ -1413,11 +1412,8 @@ int memory_failure(unsigned long pfn, int flags)
/*
* Now take care of user space mappings.
* Abort on fail: __delete_from_page_cache() assumes unmapped page.
- *
- * When the raw error page is thp tail page, hpage points to the raw
- * page after thp split.
*/
- if (!hwpoison_user_mappings(p, pfn, flags, &hpage)) {
+ if (!hwpoison_user_mappings(p, pfn, flags, &p)) {
action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
res = -EBUSY;
goto out;
--
2.26.2
