btrfs may require /dev in case there are multiple devices
Example:
root=/dev/sda1 rootfstype=btrfs rootflags=device=/dev/sdb1
---
init/do_mounts.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 82f2288..9612958 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -527,8 +527,10 @@ void __init mount_root(void)
}
#endif
#ifdef CONFIG_BLOCK
+ sys_mount(NULL, "/dev", "devtmpfs", 0, NULL);
create_dev("/dev/root", ROOT_DEV);
mount_block_root("/dev/root", root_mountflags);
+ sys_umount("/dev", 0);
#endif
}
--
2.1.1
--
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