Is it impossible to disable file system cache for special process?

As far as I known, there is a cache on file system. Is it impossible to disable it for special process?

I have a process to access many files. I think the file system cache has size limitation.If cache is enable for it, other processes maybe lost their file system cache, then cause some performance issues on HDD.

Thank you!
Is it impossible to disable file system cache for special process?
 
 
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