基于msm-5.4一、简介当存在内存压力时，会调用shrinker的count_objects()和scan_objects()进程内存回收操作。二、注册逻辑1.注册ashmem_init//ashmem.cregister_shrinker(&ashmem_shrinker)//vmscan.cregister_shrinker_prepared(shrinker)