"Neal H. Walfield" <[EMAIL PROTECTED]> writes: > The hashes and an array consisting of the reference count, a bit > indicating if the page is in the kernel and another bit indicating if > the page is allocated.
I could perfectly well adopt exactly the same strategy, and use a cheaper but less precise policy for dropping cached mappings, if there is really concern about the memory consumption of two extra pointers per mapping. Because mappings are cheaper, it is much less important to have excellent long-term behavior. It is really the near-term things that are important; the many successive operations on the same inode, for example. In such a case, it is very unlikely that the drop random mapping strategy will drop something actually in active use. Thomas _______________________________________________ Bug-hurd mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/bug-hurd
