The quilt patch titled
Subject: mm: accept memory in __alloc_pages_bulk()
has been removed from the -mm tree. Its filename was
mm-accept-memory-in-__alloc_pages_bulk.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: mm: accept memory in __alloc_pages_bulk()
Date: Fri, 9 Aug 2024 14:48:49 +0300
Currently, the kernel only accepts memory in get_page_from_freelist(), but
there is another path that directly takes pages from free lists -
__alloc_page_bulk(). This function can consume all accepted memory and
will resort to __alloc_pages_noprof() if necessary.
Conditionally accepted in __alloc_pages_bulk().
The same issue may arise due to deferred page initialization. Kick the
deferred initialization machinery before abandoning the zone, as the
kernel does in get_page_from_freelist().
Link: https://lkml.kernel.org/r/20240809114854.3745464-4-kirill.shutemov@xxxxxxxxxxxxxxx
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/mm/page_alloc.c~mm-accept-memory-in-__alloc_pages_bulk
+++ a/mm/page_alloc.c
@@ -4577,12 +4577,23 @@ unsigned long alloc_pages_bulk_noprof(gf
goto failed;
}
+ cond_accept_memory(zone, 0);
+retry_this_zone:
mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK) + nr_pages;
if (zone_watermark_fast(zone, 0, mark,
zonelist_zone_idx(ac.preferred_zoneref),
alloc_flags, gfp)) {
break;
}
+
+ if (cond_accept_memory(zone, 0))
+ goto retry_this_zone;
+
+ /* Try again if zone has deferred pages */
+ if (deferred_pages_enabled()) {
+ if (_deferred_grow_zone(zone, 0))
+ goto retry_this_zone;
+ }
}
/*
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
