Hi,
Thanks for your patch.
FYI: kernel test robot notices the stable kernel rule is not satisfied.
Rule: 'Cc: stable@vger.kernel.org' or 'commit <sha1> upstream.' Subject: [PATCH] mm/mempolicy: Correctly update prev when policy is equal on mbind Link: https://lore.kernel.org/stable/db42467a692d78c654ec5c1953329401bd8a9c34.1682...
The check is based on https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html