diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2024-08-09 13:48:50 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-02 05:26:06 +0200 |
| commit | 310183de7bb2ed114a80d057690ddb23d0cfe814 (patch) | |
| tree | a76ab4f6e564a935622087fd570c9120e83255a2 /mm/page_alloc.c | |
| parent | mm: accept memory in __alloc_pages_bulk() (diff) | |
| download | linux-310183de7bb2ed114a80d057690ddb23d0cfe814.tar.xz linux-310183de7bb2ed114a80d057690ddb23d0cfe814.zip | |
mm: introduce PageUnaccepted() page type
The new page type allows physical memory scanners to detect unaccepted
memory and handle it accordingly.
The page type is serialized with zone lock.
Link: https://lkml.kernel.org/r/20240809114854.3745464-5-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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 9dde1b04a04e..fec7ed5a04f2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6963,6 +6963,7 @@ static bool try_to_accept_memory_one(struct zone *zone) account_freepages(zone, -MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE); __mod_zone_page_state(zone, NR_UNACCEPTED, -MAX_ORDER_NR_PAGES); + __ClearPageUnaccepted(page); spin_unlock_irqrestore(&zone->lock, flags); accept_page(page, MAX_PAGE_ORDER); @@ -7021,6 +7022,7 @@ static bool __free_unaccepted(struct page *page) list_add_tail(&page->lru, &zone->unaccepted_pages); account_freepages(zone, MAX_ORDER_NR_PAGES, MIGRATE_MOVABLE); __mod_zone_page_state(zone, NR_UNACCEPTED, MAX_ORDER_NR_PAGES); + __SetPageUnaccepted(page); spin_unlock_irqrestore(&zone->lock, flags); if (first) |