From 85ffbf555794c2484b9ab440d3bc23638a0cb315 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 24 Jan 2024 17:52:49 +0000 Subject: ubifs: Convert ubifs_vm_page_mkwrite() to use a folio Replace six implicit calls to compound_head() with one. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Zhihao Cheng Signed-off-by: Richard Weinberger --- Documentation/mm/page_cache.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/mm') diff --git a/Documentation/mm/page_cache.rst b/Documentation/mm/page_cache.rst index 75eba7c431b2..138d61f869df 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 -- cgit