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: 362663044
Change-Id: Ic7ac7430890851d1b69ea29f33f65722c1b644f1
Signed-off-by:
Rui Chen <chenrui9@honor.com>
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