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Message-ID: <20240805145940.2911011-1-kirill.shutemov@linux.intel.com>
Date: Mon, 5 Aug 2024 17:59:32 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
"Borislav Petkov (AMD)" <bp@...en8.de>,
Mel Gorman <mgorman@...e.de>,
Vlastimil Babka <vbabka@...e.cz>
Cc: Tom Lendacky <thomas.lendacky@....com>,
Mike Rapoport <rppt@...nel.org>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
David Hildenbrand <david@...hat.com>,
Johannes Weiner <hannes@...xchg.org>,
linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 0/8] mm: Fix several issues with unaccepted memory
The patchset addresses several issues related to unaccepted memory.
The most severe issue is a kswapd hang, which is fixed by patch 1/8.
Patch 2/8 ensures that __alloc_pages_bulk() will not exhaust all
accepted memory without accepting more.
Patches 3/8-5/8 are preparations for patch 6/8, which fixes
alloc_config_page() on machines with unaccepted memory. This allows, for
example, the allocation of gigantic pages at runtime.
Patches 7/8-8/8 enable the kernel to accept memory up to the promo
watermark.
I believe only the first patch deserves backporting.
Please review. Any feedback is welcome.
Kirill A. Shutemov (8):
mm: Fix endless reclaim on machines with unaccepted memory
mm: Accept memory in __alloc_pages_bulk().
mm: Introduce PageUnaccepted() page type
mm: Rename accept_page() to accept_page_memory()
mm: Add a helper to accept page
mm: page_isolation: Handle unaccepted memory isolation
mm: Introduce promo_wmark_pages()
mm: Accept to promo watermark
include/linux/mmzone.h | 1 +
include/linux/page-flags.h | 3 +
kernel/sched/fair.c | 2 +-
mm/internal.h | 8 +++
mm/page_alloc.c | 120 ++++++++++++++++++++++++-------------
mm/page_isolation.c | 8 +++
mm/vmscan.c | 2 +-
7 files changed, 100 insertions(+), 44 deletions(-)
--
2.43.0
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