Hello, We disable the SC local read to UC block in current implementation. This is not optimized for some application with access mode that it almost read what's written recently. With this access pattern, the usage of the SC read downgrades greatly and the perf is impacted.
An idea is to enable SC local read to the UC block. If the app could ensure that 1. before each read of the file, hsync always is always called. 2. And the range of the read is not beyond the write. It think if the 2 above met, there should be no problem. Does this make sense? Actually, I did a prototype and succeeded, and will look into it further. But not sure if we tried this before. -- Xie Gang
