FWIW from https://www.kernel.org/doc/Documentation/SubmittingPatches
After you have submitted your change, be patient and wait. If Linus
likes your change and applies it, it will appear in the next version
of the kernel that he releases.
However, if your change doesn't appear in the next version of the
kernel, there could be any number of reasons. It's YOUR job to
narrow down those reasons, correct what was wrong, and submit your
updated change.
It is quite common for Linus to "drop" your patch without comment.
That's the nature of the system. If he drops your patch, it could be
due to
* Your patch did not apply cleanly to the latest kernel version.
* Your patch was not sufficiently discussed on linux-kernel.
* A style issue (see section 2).
* An e-mail formatting issue (re-read this section).
* A technical problem with your change.
* He gets tons of e-mail, and yours got lost in the shuffle.
* You are being annoying.
When in doubt, solicit comments on linux-kernel mailing list.