linux-kernel - Re: [PATCH 0/9] overlay filesystem: request for inclusion (v17)

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Date:	Wed, 13 Mar 2013 17:51:33 +0100
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	viro@...iv.linux.org.uk, torvalds@...ux-foundation.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	hch@...radead.org, akpm@...ux-foundation.org, apw@...onical.com,
	nbd@...nwrt.org, neilb@...e.de, jordipujolp@...il.com,
	ezk@....cs.sunysb.edu, dhowells@...hat.com,
	sedat.dilek@...glemail.com, hooanon05@...oo.co.jp, mszeredi@...e.cz
Subject: Re: [PATCH 0/9] overlay filesystem: request for inclusion (v17)

On Wed, Mar 13, 2013 at 5:21 PM, Miklos Szeredi <miklos@...redi.hu> wrote:
> On Wed, Mar 13, 2013 at 5:10 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
>
>> Anyway, with CONFIG_OVERLAYFS_FS=m I do not see any related messages
>> when the kernel-module is loaded.
>> So, is this intended?
>> SquashFS prints into the logs, so what is it doing differently?
>
> Some modules do, some don't.  It's not compulsory and not very useful.
>

What about...

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 482c26f..92b9ad5 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -675,11 +675,13 @@ MODULE_ALIAS_FS("overlayfs");
 static int __init ovl_init(void)
 {
        return register_filesystem(&ovl_fs_type);
+       printk(KERN_INFO "overlayfs: loaded\n");
 }

 static void __exit ovl_exit(void)
 {
        unregister_filesystem(&ovl_fs_type);
+       printk(KERN_INFO "overlayfs: unloaded\n");
 }

 module_init(ovl_init);

Maybe "loaded" is enough.

- Sedat -

> Thanks,
> Miklos
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