Messages in this thread | | | Date | Mon, 27 Feb 2006 02:45:33 -0500 | From | "Xin Zhao" <> | Subject | page cache question |
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Sorry if this question is dumb.
Linux uses address_space to identify pages in the page cache. An address space is often associated with a memory object such as inode. That seems to associate the cached page with that inode. My question is: if a file is closed and the inode is destroyed, will the cached page be removed from page cache immediately? If so, does that mean the file system has to load data from disk again if a user promptly open and read the same file again? If not, how does linux determine when to evict a cached page? using LRU?
Thanks in advance for your kind help!
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