[PATCH v4 2/5] cramfs: make cramfs_physmem usable as root fs

From: Nicolas Pitre
Date: Wed Sep 27 2017 - 19:32:36 EST


Signed-off-by: Nicolas Pitre <nico@xxxxxxxxxx>
Tested-by: Chris Brandt <chris.brandt@xxxxxxxxxxx>
---
init/do_mounts.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/init/do_mounts.c b/init/do_mounts.c
index c2de5104aa..43b5817f60 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -556,6 +556,14 @@ void __init prepare_namespace(void)
ssleep(root_delay);
}

+ if (IS_ENABLED(CONFIG_CRAMFS_PHYSMEM) && root_fs_names &&
+ !strcmp(root_fs_names, "cramfs_physmem")) {
+ int err = do_mount_root("cramfs", "cramfs_physmem",
+ root_mountflags, root_mount_data);
+ if (!err)
+ goto out;
+ }
+
/*
* wait for the known devices to complete their probing
*
--
2.9.5