[PATCH] vfs: init/main.c: change comment: opening /dev/console may fail

This patch is for VFS.

Today comment on console_on_rootfs says that opening /dev/console never
fails. This is false. The opening may fail if /dev/console is not
present in internal initramfs. So let's update the comment.

I tried to fix the problem itself in [1], but the patchset was rejected,
so I will fix the comment instead. :)

Link: https://lore.kernel.org/all/[email protected]/ # [1]
Signed-off-by: Askar Safin <[email protected]>
---
 init/main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/init/main.c b/init/main.c
index 1cb395dd9..40cfda9aa 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1645,7 +1645,10 @@ static int __ref kernel_init(void *unused)
 	      "See Linux Documentation/admin-guide/init.rst for guidance.");
 }
 
-/* Open /dev/console, for stdin/stdout/stderr, this should never fail */
+/*
+ * Open /dev/console, for stdin/stdout/stderr, this may fail if you supplied
+ * your own internal initramfs without /dev/console
+ */
 void __init console_on_rootfs(void)
 {
 	struct file *file = filp_open("/dev/console", O_RDWR, 0);

base-commit: 591cd656a1bf5ea94a222af5ef2ee76df029c1d2 (mainline)
-- 
2.47.3