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All the underlying infrastructure is sound against > that with a few more tweaks, no reason to block it anymore. > > Also rename the split helper, which now handles mappingless swap > cache folios that are yet to be anon, or may actually belong to > shmem. In either case there is not much difference in how they would > be split. > > A non-anon swap cache folio that still has a mapping (e.g. a shmem > swap cache folio) remains rejected up front: it would need both its > page cache and swap cache entries updated on split, which the split > helpers do not do, and there would be little benefit in doing so. > > Signed-off-by: Kairui Song > --- > mm/huge_memory.c | 38 ++++++++++++++++++++++---------------- > 1 file changed, 22 insertions(+), 16 deletions(-) > LGTM. Reviewed-by: Zi Yan --=20 Best Regards, Yan, Zi