what is pagecache page

Posted by kumar on Stack Overflow See other posts from Stack Overflow or by kumar
Published on 2010-03-24T13:52:46Z Indexed on 2010/03/24 13:53 UTC
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linux-kernel

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/* * Each physical page in the system has a struct page associated with * it to keep track of whatever it is we are using the page for at the * moment. Note that we have no way to track which tasks are using * a page, though if it is a pagecache page, rmap structures can tell us * who is mapping it. */

include/linux/mm_types.h

Here Please lemme know what is "pagecache page" means?

Thanks!

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