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| author | Baoquan He <bhe@redhat.com> | 2024-03-26 14:11:33 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-25 20:56:18 -0700 |
| commit | 0aac45663a6d8803e8436dbaca884e0712970c7a (patch) | |
| tree | 4ef218e05f4b2e27c9e67b9988899f43f3b9727c | |
| parent | 96a5c186efff9906c58fa24ab05d0cc3ee000a00 (diff) | |
| download | linux-stable-0aac45663a6d8803e8436dbaca884e0712970c7a.tar.gz linux-stable-0aac45663a6d8803e8436dbaca884e0712970c7a.tar.bz2 linux-stable-0aac45663a6d8803e8436dbaca884e0712970c7a.zip | |
mm/page_alloc.c: change the array-length to MIGRATE_PCPTYPES
Earlier, in commit 1dd214b8f21c ("mm: page_alloc: avoid merging
non-fallbackable pageblocks with others"), migrate type MIGRATE_CMA and
MIGRATE_ISOLATE are removed from fallbacks list since they are never used.
Later on, in commit ("aa02d3c174ab mm/page_alloc: reduce fallbacks to
(MIGRATE_PCPTYPES - 1)"), the array column size is reduced to
'MIGRATE_PCPTYPES - 1'. In fact, the array row size need be reduced to
MIGRATE_PCPTYPES too since it's only covering rows of the number
MIGRATE_PCPTYPES. Even though the current code has handled cases
when the migratetype is CMA, HIGHATOMIC and MEMORY_ISOLATION, making
the row size right is still good to avoid future error and confusion.
Link: https://lkml.kernel.org/r/20240326061134.1055295-8-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 875cec8c7708..47ab0297838a 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1542,7 +1542,7 @@ struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, * * The other migratetypes do not have fallbacks. */ -static int fallbacks[MIGRATE_TYPES][MIGRATE_PCPTYPES - 1] = { +static int fallbacks[MIGRATE_PCPTYPES][MIGRATE_PCPTYPES - 1] = { [MIGRATE_UNMOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_MOVABLE }, [MIGRATE_MOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_UNMOVABLE }, [MIGRATE_RECLAIMABLE] = { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE }, |