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-rw-r--r--init/do_mounts.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 3715feb8446..d055b1914c3 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -263,6 +263,10 @@ retry:
printk("Please append a correct \"root=\" boot option; here are the available partitions:\n");
printk_all_partitions();
+#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT
+ printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify "
+ "explicit textual name for \"root=\" boot option.\n");
+#endif
panic("VFS: Unable to mount root fs on %s", b);
}