Hi All, We've posted v4 patchset introducing a new "perfer-many" memory policy https://lore.kernel.org/lkml/1615952410-36895-1-git-send-email-feng.tang@xxxxxxxxx/ , for which Michal Hocko gave many comments while pointing out some problems, and we also found some semantics confusion about 'prefer' and 'local' policy, as well as some duplicated code. This patchset tries to address them. Please help to review, thanks! The patchset has been run with some sanity test like 'stress-ng' and 'ltp', and no problem found. - Feng Changelogs: v1: * use helper func instead of macro for patch 2/4 (David Rientjes) * fix a possible null pointer case in patch 3/4 * update commit log for 1/4 RFC v2: * add for oom check fix patch 1/4 * add the unification patch for mpol preprocess 2/4 Feng Tang (4): mm/mempolicy: skip nodemask intersect check for 'interleave' when oom mm/mempolicy: unify the preprocessing for mbind and set_mempolicy mm/mempolicy: don't handle MPOL_LOCAL like a fake MPOL_PREFERRED policy mm/mempolicy: kill MPOL_F_LOCAL bit include/uapi/linux/mempolicy.h | 1 + mm/mempolicy.c | 208 +++++++++++++++++++++-------------------- 2 files changed, 109 insertions(+), 100 deletions(-) -- 2.7.4