On Wed, 4 Aug 2021 16:20:10 +0800 zhangkui <zhangkui@xxxxxxxx> wrote: > There is a usecase in Android that an app process's memory is swapped out > by process_madvise() with MADV_PAGEOUT, such as the memory is swapped to > zram or a backing device. When the process is scheduled to running, like > switch to foreground, multiple page faults may cause the app dropped > frames. > To reduce the problem, SMS can read-ahead memory of the process immediately > when the app switches to forground. > Calling process_madvise() with MADV_WILLNEED can meet this need. > What is SMS?
