doc: Remove misleading reference to brd in dax.rst

brd hasn't supported DAX for a long time but dax.rst
still suggests it as an example of how to write a DAX
supporting block driver.

Remove the reference, confuse less people.

Fixes: 7a862fbbdec6 ("brd: remove dax support")
Signed-off-by: Daniel Palmer <daniel.palmer@sony.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250610-fixdasrstbrd20250610-v1-1-4abe3b7f381a@sony.com

diff --git a/Documentation/filesystems/dax.rst b/Documentation/filesystems/dax.rst
index 08dd5e254cc535c5b407f474741e240398bcf9aa..5b283f3d1eb11316dd317af8b5bd04e83b87dee5 100644 (file)
--- a/Documentation/filesystems/dax.rst
+++ b/Documentation/filesystems/dax.rst
@@ -206,7 +206,6 @@ stall the CPU for an extended period, you should also not attempt to
 implement direct_access.
 
 These block devices may be used for inspiration:
-- brd: RAM backed block device driver
 - pmem: NVDIMM persistent memory driver