page_cache.rst 371 B

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  1. .. SPDX-License-Identifier: GPL-2.0
  2. ==========
  3. Page Cache
  4. ==========
  5. The page cache is the primary way that the user and the rest of the kernel
  6. interact with filesystems. It can be bypassed (e.g. with O_DIRECT),
  7. but normal reads, writes and mmaps go through the page cache.
  8. Folios
  9. ======
  10. The folio is the unit of memory management within the page cache.
  11. Operations