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| author | Kirill A. Shutemov <[email protected]> | 2025-03-10 08:28:55 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2025-03-17 00:40:26 +0000 |
| commit | 800f1059c99e2b39899bdc67a7593a7bea6375d8 (patch) | |
| tree | 3b96debff9db612f2a683bdb7918fddfcc14385c /mm/filemap.c | |
| parent | mm: decline to manipulate the refcount on a slab page (diff) | |
| download | kernel-800f1059c99e2b39899bdc67a7593a7bea6375d8.tar.gz kernel-800f1059c99e2b39899bdc67a7593a7bea6375d8.zip | |
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/[email protected]
Fixes: dcdfdd40fa82 ("mm: Add support for unaccepted memory")
Signed-off-by: Kirill A. Shutemov <[email protected]>
Tested-by: Farrah Chen <[email protected]>
Reported-by: Farrah Chen <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Reviewed-by: Pankaj Gupta <[email protected]>
Cc: Ashish Kalra <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: "Edgecombe, Rick P" <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: "Mike Rapoport (IBM)" <[email protected]>
Cc: Thomas Lendacky <[email protected]>
Cc: <[email protected]> [6.5+]
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions