[PATCH v9 5/5] qrwlock: Use the mcs_spinlock helper functions for MCS queuing

There is a pending MCS lock patch series that adds generic MCS lock helper functions to do MCS-style locking. This patch will enable the queue rwlock to use that generic MCS lock/unlock primitives for internal queuing. This patch should only be merged after the merging of that generic MCS locking

[PATCH v9 5/5] qrwlock: Use the mcs_spinlock helper functions for MCS queuing

There is a pending MCS lock patch series that adds generic MCS lock helper functions to do MCS-style locking. This patch will enable the queue rwlock to use that generic MCS lock/unlock primitives for internal queuing. This patch should only be merged after the merging of that generic MCS locking