diff options
| author | Zi Yan <ziy@nvidia.com> | 2025-06-16 22:11:10 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-13 16:38:17 -0700 |
| commit | e904bce2d9d43e0f370e238457a13847d161570b (patch) | |
| tree | 3fbac9f3b94bb65025ff5245a5b52cff2ced6472 /include/linux/mmzone.h | |
| parent | 42f46ed99ac6c07adf7f3bcbe9040b0c52d62d0f (diff) | |
mm/page_isolation: make page isolation a standalone bit
During page isolation, the original migratetype is overwritten, since
MIGRATE_* are enums and stored in pageblock bitmaps. Change
MIGRATE_ISOLATE to be stored a standalone bit, PB_migrate_isolate, like
PB_compact_skip, so that migratetype is not lost during pageblock
isolation.
Link: https://lkml.kernel.org/r/20250617021115.2331563-3-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Richard Chang <richardycc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 76d66c07b673..1d1bb2b7f40d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -79,6 +79,9 @@ enum migratetype { * __free_pageblock_cma() function. */ MIGRATE_CMA, + __MIGRATE_TYPE_END = MIGRATE_CMA, +#else + __MIGRATE_TYPE_END = MIGRATE_HIGHATOMIC, #endif #ifdef CONFIG_MEMORY_ISOLATION MIGRATE_ISOLATE, /* can't allocate from here */ |