[PATCHv2 0/8] mm: Fix several issues with unaccepted memory
From: Kirill A. Shutemov
Date: Fri Aug 09 2024 - 07:49:14 EST
The patchset addresses several issues related to unaccepted memory.
It replaces "mm: fix endless reclaim on machines with unaccepted
memory" commit which is in mm-unstable now.
The most severe issue is a kswapd hang, which is fixed by patch 1/8.
Pach 2/8 preparatory cleanup.
Patch 3/8 ensures that __alloc_pages_bulk() will not exhaust all
accepted memory without accepting more.
Patches 4/8-6/8 are preparations for patch 7/8, which fixes
alloc_config_page() on machines with unaccepted memory. This allows, for
example, the allocation of gigantic pages at runtime.
Patch 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: Reduce deferred struct page init ifdeffery
mm: Accept memory in __alloc_pages_bulk().
mm: Introduce PageUnaccepted() page type
mm: Rework accept memory helpers
mm: Add a helper to accept page
mm: page_isolation: Handle unaccepted memory isolation
mm: Accept to promo watermark
arch/x86/boot/compressed/misc.c | 2 +-
arch/x86/boot/compressed/misc.h | 2 +-
drivers/firmware/efi/libstub/efistub.h | 2 +-
.../firmware/efi/libstub/unaccepted_memory.c | 3 +-
drivers/firmware/efi/unaccepted_memory.c | 18 +--
include/linux/mm.h | 12 +-
include/linux/page-flags.h | 8 ++
mm/internal.h | 8 ++
mm/memblock.c | 2 +-
mm/mm_init.c | 2 +-
mm/page_alloc.c | 128 ++++++++++--------
mm/page_isolation.c | 8 ++
tools/testing/memblock/internal.h | 2 +-
13 files changed, 122 insertions(+), 75 deletions(-)
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2.43.0