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out in [1], stats->nr_thp_failed needs to be updated t= o >> avoid stats inconsistency between MIGRATE_SYNC and MIGRATE_ASYNC when >> calling migrate_pages_batch(). Because if not, when migrate_pages_batch() is called via migrate_pages(MIGRATE_ASYNC), nr_thp_failed will not be increased and when migrate_pages_batch() is called via migrate_pages(MIGRATE_SYNC*), nr_thp_failed will be increase in migrate_pages_sync() by stats->nr_thp_failed +=3D astats.nr_thp_split. >> >> [1] https://lore.kernel.org/linux-mm/87msnq7key.fsf@yhuang6-desk2.ccr.= corp.intel.com/ > > IMHO, we shouldn't ask people to use link to understand the patch > description or commit message. If so, we can make the link less > outstanding and maybe add more words about the issue. I summarized your explanation from the link. You think the summary is not= enough? I can add more text. Let me know if the above text looks good to you, then I can resend the patch. Thanks. -- Best Regards, Yan, Zi --=_MailMate_2450C339-B7A2-43C4-AF51-F26C32858B37_= Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQJDBAEBCgAtFiEE6rR4j8RuQ2XmaZol4n+egRQHKFQFAmZzH64PHHppeUBudmlk aWEuY29tAAoJEOJ/noEUByhUcEoP+QGOEKXhMg8ifMskFmwnnIbdHUaxuzmsyS8B 2VKcqgBF2vGDs+oGYcyv/Q9r+FtxjclVJdHW7L3LyxlU/FVYBsCV06jCLAqkMnAT 2jtOytS29s8GkMVFdjWzAWPMid/N1wJsXlnG1xGy9khlmCCY34NKNn113t5cHOxh MY1J3jqHrFJybnxxV4PBN0C4N09y/pwv4zP6nCnxT2t9GVZL8Sxu8tnGmODKGpWR ONS37crPDfi71Z9Y59cMfvFGBWmoXvoV9F82P8/ZvtU80/TFvMYTF66K8Po9CJqC ngBDAL3KWYbzmslIOnupWbQkeGErYscvX2RQou9ZdW9VUAgGPn8ezXtJ1v9FX0Gp DBVG/63DZXUUfxE4I12NHwfs/bXLubdDAnB+kSA9xUDlfRuh2gBTdrzZQ/9RKimW s002Kt4hECOc6F6FxAAQKZHPd/gl/wBO0kwXaaL7GjcAvHTyylyNrNhG1rblEJNX T9yFYC3up7JIO4YEWvqLWHAFLzyW32IqZZvjx5A8UU7p2Cuef/6gNfG9h8FUo1Sj VtulIY3Qs4QBb5r1EGAKb6lNVm8vADmnL4OTfnEzCtj3dh6KnPm6N1iHelKEO/aV FTca2UfQvMUvj4cE3OURde60Cg4osxCEJns1OqRfZfp9I2ugnBP0Dkyn6VeWV/UO jSFItc6p =crxx -----END PGP SIGNATURE----- --=_MailMate_2450C339-B7A2-43C4-AF51-F26C32858B37_=--