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authorMatthew Wilcox (Oracle) <willy@infradead.org>2024-01-24 17:52:49 +0000
committerRichard Weinberger <richard@nod.at>2024-02-25 21:08:00 +0100
commit85ffbf555794c2484b9ab440d3bc23638a0cb315 (patch)
tree8f72c023d8dd7e0aeb8e477566be7f4efd2aa4d2 /Documentation
parent0c2d140c1f73f610c7e3f71888e1a50d770117e0 (diff)
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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) <willy@infradead.org> Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/mm/page_cache.rst10
1 files changed, 10 insertions, 0 deletions
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