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author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2025-03-10 11:28:55 +0300 |
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committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-17 03:40:26 +0300 |
commit | 800f1059c99e2b39899bdc67a7593a7bea6375d8 (patch) | |
tree | 3b96debff9db612f2a683bdb7918fddfcc14385c /tools/perf/scripts/python/exported-sql-viewer.py | |
parent | b9c0e49abfca06f1a109acea834bcfc934f33f76 (diff) | |
download | linux-800f1059c99e2b39899bdc67a7593a7bea6375d8.tar.xz |
mm/page_alloc: fix memory accept before watermarks gets initialized
Watermarks are initialized during the postcore initcall. Until then, all
watermarks are set to zero. This causes cond_accept_memory() to
incorrectly skip memory acceptance because a watermark of 0 is always met.
This can lead to a premature OOM on boot.
To ensure progress, accept one MAX_ORDER page if the watermark is zero.
Link: https://lkml.kernel.org/r/20250310082855.2587122-1-kirill.shutemov@linux.intel.com
Fixes: dcdfdd40fa82 ("mm: Add support for unaccepted memory")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Tested-by: Farrah Chen <farrah.chen@intel.com>
Reported-by: Farrah Chen <farrah.chen@intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Cc: Ashish Kalra <ashish.kalra@amd.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Thomas Lendacky <thomas.lendacky@amd.com>
Cc: <stable@vger.kernel.org> [6.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions