[PATCH 3/4] mm/hwpoison: change argument struct page **hpagep to *hpage

From: Miaohe Lin
Date: Sat Aug 14 2021 - 06:51:48 EST


It's unnecessary to pass in a struct page **hpagep because it's never
modified. Changing to use *hpage to simplify the code.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/memory-failure.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 54f61133bf60..a4e585f812c1 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1265,14 +1265,13 @@ static int get_hwpoison_page(struct page *p, unsigned long flags)
* the pages and send SIGBUS to the processes if the data was dirty.
*/
static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
- int flags, struct page **hpagep)
+ int flags, struct page *hpage)
{
enum ttu_flags ttu = TTU_IGNORE_MLOCK | TTU_SYNC;
struct address_space *mapping;
LIST_HEAD(tokill);
bool unmap_success;
int kill = 1, forcekill;
- struct page *hpage = *hpagep;
bool mlocked = PageMlocked(hpage);

/*
@@ -1497,7 +1496,7 @@ static int memory_failure_hugetlb(unsigned long pfn, int flags)
goto out;
}

- if (!hwpoison_user_mappings(p, pfn, flags, &head)) {
+ if (!hwpoison_user_mappings(p, pfn, flags, head)) {
action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
res = -EBUSY;
goto out;
@@ -1777,7 +1776,7 @@ 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.
*/
- if (!hwpoison_user_mappings(p, pfn, flags, &p)) {
+ if (!hwpoison_user_mappings(p, pfn, flags, p)) {
action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
res = -EBUSY;
goto unlock_page;
--
2.23.0