diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2022-12-23 02:46:36 +0000 |
|---|---|---|
| committer | Suren Baghdasaryan <surenb@google.com> | 2023-04-30 23:12:12 +0000 |
| commit | 1befa67d505966fc1e46b92c2779a0f14d43e13b (patch) | |
| tree | ee44688931c6c7eda410a4c7609833cb7b972dc1 /mm/page_alloc.c | |
| parent | 1b8d31f11bd132e768a79a598db9c1b6bc7e5a34 (diff) | |
mm: create new codetag references during page splitting
When a high-order page is split into smaller ones, each newly split
page should get its codetag. The original codetag is reused for these
pages but it's recorded as 0-byte allocation because original codetag
already accounts for the original high-order allocated page.
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index edd35500f7f6..8cf5a835af7f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2796,6 +2796,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); split_page_owner(page, 1 << order); + pgalloc_tag_split(page, 1 << order); split_page_memcg(page, 1 << order); } EXPORT_SYMBOL_GPL(split_page); @@ -5012,6 +5013,7 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order, struct page *last = page + nr; split_page_owner(page, 1 << order); + pgalloc_tag_split(page, 1 << order); split_page_memcg(page, 1 << order); while (page < --last) set_page_refcounted(last); |