[automerger skipped] Merge "Allow the kernel to upgrade ASYNC mode processes to SYNC mode." into sc-dev am: 4683b11390 -s ours

am skip reason: Merged-In Ie7ada3b073178b7967f0819cbdadc2d8e3a2c648 with SHA-1 48bf46b968 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/bionic/+/15223414

Change-Id: Ib980184dfa3d9066e2ab4b5131e4648251164665