From: Rui Qi <qirui.001@xxxxxxxxxxxxx>
we hope that memory errors can be successfully handled quickly, using
__GFP_MEMALLOC can help us improve the success rate of processing
under memory pressure, because to_kill struct is freed very quickly,
so using __GFP_MEMALLOC will not exacerbate memory pressure for a long time,
and more memory will be freed after killed task exiting, which will also
reduce memory pressure.
Signed-off-by: Rui Qi <qirui.001@xxxxxxxxxxxxx>
---
mm/memory-failure.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 05818d09b4eb..0608383f927a 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -451,7 +451,7 @@ static void __add_to_kill(struct task_struct *tsk, struct page *p,
{
struct to_kill *tk;
- tk = kmalloc(sizeof(struct to_kill), GFP_ATOMIC);
+ tk = kmalloc(sizeof(struct to_kill), GFP_ATOMIC | __GFP_MEMALLOC);
if (!tk) {
pr_err("Out of memory while machine check handling\n");
return;
@@ -1931,7 +1931,7 @@ static int folio_set_hugetlb_hwpoison(struct folio *folio, struct page *page)
return -EHWPOISON;
}
- raw_hwp = kmalloc(sizeof(struct raw_hwp_page), GFP_ATOMIC);
+ raw_hwp = kmalloc(sizeof(struct raw_hwp_page), GFP_ATOMIC | __GFP_MEMALLOC);
if (raw_hwp) {
raw_hwp->page = page;
llist_add(&raw_hwp->node, head);
--
2.39.3 (Apple Git-145)
