ANDROID: fs: add vendor hook to collect IO statistics
Add vendor hook to get metainfo of direct/buffered read and write.
Determine hot files in each performance-sensitive user scenario.
Bug: 380502059
Change-Id: Ie7604852df637d6664afd72e87bd6d4b14bbc2a2
Signed-off-by:
Rui Chen <chenrui9@honor.com>
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