fix priority inversion bug of mutex.#3647

Merged

BernardXiong merged 2 commits intoRT-Thread:masterfrom

Jan 20, 2021

Commits on Oct 25, 2020

fix the conflicting file.
tmmdh
committed

Commits on Jan 20, 2021

Merge branch 'master' of https://github.com/RT-Thread/rt-thread
tmmdh
committed