[8u] RFR 8155951 & 8151066

[Aleksey Shipilev]

On 8/13/19 8:13 PM, Zhengyu Gu wrote:
> The patch does not apply cleanly. Other than a few minor conflicts, e.g. copyright years, breaking
> single line long parameter list to multi-lines and line shifts, jdk8u lock declaration  (def macro
> in mutexLocker.cpp) does not take 5th argument.

So, now that we acquire the lock with MutexLocker, it always checks for safepoint? Wanted to
understand what makes dropping the 5th argument safe.

> 8u backport: http://cr.openjdk.java.net/~zgu/JDK-8155951-8u/webrev.00/index.html

Otherwise backport looks good to me.

-- 
Thanks,
-Aleksey