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Diffstat (limited to 'Documentation/mm/page_cache.rst')
| -rw-r--r-- | Documentation/mm/page_cache.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/mm/page_cache.rst b/Documentation/mm/page_cache.rst index 75eba7c431..138d61f869 100644 --- a/Documentation/mm/page_cache.rst +++ b/Documentation/mm/page_cache.rst @@ -3,3 +3,13 @@ ========== Page Cache ========== + +The page cache is the primary way that the user and the rest of the kernel +interact with filesystems. It can be bypassed (e.g. with O_DIRECT), +but normal reads, writes and mmaps go through the page cache. + +Folios +====== + +The folio is the unit of memory management within the page cache. +Operations |