linux kernel - Limit buffer cache -

I am wondering if there is any way to set the upper limit on the buffer cache usable address space? I think there is no limit and once the memory is used up to a certain point, other processes will be swapped to extend the buffer cache?

After saying this, it seems that if he has reached that point, then he reads / writes, can just fail in the right way?

Just because Buffer Catch is taking a lot of memory, just unused RAM for buffer caching Is used in the form, but if some process requires memory then it gets high priority, it is automatically done by the kernel, only optimal use of buffer cache resources, it can damage the normal work of the system Does not reach

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