[PATCH v4 2/5] docs: block: Document support for read-only partition in cmdline part

Christian Marangi
2024-09-30T11:31:30Z

Document support for read-only partition in cmdline partition for block
devices by appending "ro" after the (partition name).

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
Documentation/block/cmdline-partition.rst | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/block/cmdline-partition.rst b/Documentation/block/cmdline-partition.rst
index 530bedff548a..526ba201dddc 100644
--- a/Documentation/block/cmdline-partition.rst
+++ b/Documentation/block/cmdline-partition.rst
@@ -39,13 +39,16 @@ blkdevparts=<blkdev-def>[;<blkdev-def>]
create a link to block device partition with the name "PARTNAME".
User space application can access partition by partition name.

+ro
+ read-only. Flag the partition as read-only.
+
Example:

eMMC disk names are "mmcblk0" and "mmcblk0boot0".

bootargs::

- 'blkdevparts=mmcblk0:1G(data0),1G(data1),-;mmcblk0boot0:1m(boot),-(kernel)'
+ 'blkdevparts=mmcblk0:1G(data0),1G(data1),-;mmcblk0boot0:1m(boot)ro,-(kernel)'

dmesg::

--
2.45.2