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Ye Liu
7eeed888c9
The last_migrate_reason field uses -1 as a sentinel value to mean "no migration has happened". Replace the four bare -1 occurrences by adding a proper MR_NEVER member to enum migrate_reason, defining a corresponding "never_migrated" string in the MIGRATE_REASON trace macro, and updating the GDB page_owner script to use MR_NEVER instead of the hardcoded -1 so that lx-dump-page-owner does not incorrectly report unmigrated pages as migrated. No functional change. Link: https://lore.kernel.org/[email protected] Signed-off-by: Ye Liu <[email protected]> Reviewed-by: Zi Yan <[email protected]> Reviewed-by: Vlastimil Babka (SUSE) <[email protected]> Cc: Brendan Jackman <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: David Hildenbrand (Arm) <[email protected]> Signed-off-by: Andrew Morton <[email protected]>