In preparation for allocating frozen pages, stop initialising the page
refcount in __alloc_pages_may_oom().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
mm/page_alloc.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0287b3be92e5..8222cc6ce7dd 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4411,10 +4411,8 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
page = get_page_from_freelist((gfp_mask | __GFP_HARDWALL) &
~__GFP_DIRECT_RECLAIM, order,
ALLOC_WMARK_HIGH|ALLOC_CPUSET, ac);
- if (page) {
- set_page_refcounted(page);
+ if (page)
goto out;
- }
/* Coredumps can quickly deplete all memory reserves */
if (current->flags & PF_DUMPCORE)
@@ -4459,8 +4457,6 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
if (gfp_mask & __GFP_NOFAIL)
page = __alloc_pages_cpuset_fallback(gfp_mask, order,
ALLOC_NO_WATERMARKS, ac);
- if (page)
- set_page_refcounted(page);
}
out:
mutex_unlock(&oom_lock);
@@ -5202,8 +5198,10 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
/* Reclaim has failed us, start killing things */
page = __alloc_pages_may_oom(gfp_mask, order, ac, &did_some_progress);
- if (page)
+ if (page) {
+ set_page_refcounted(page);
goto got_pg;
+ }
/* Avoid allocations with no watermarks from looping endlessly */
if (tsk_is_oom_victim(current) &&
--
2.35.1
