pgrx_pg_sys

Constant ReadBufferMode_RBM_ZERO_AND_CLEANUP_LOCK

Source 
pub const ReadBufferMode_RBM_ZERO_AND_CLEANUP_LOCK: u32 = 2;
👎Deprecated since 0.12.0: you want pg_sys::ReadBufferMode::RBM_ZERO_AND_CLEANUP_LOCK