linux-kernel - Re: [PATCH] hugetlbfs: add err code in initializing module

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Message-ID: <alpine.DEB.2.00.1203121438300.28343@chino.kir.corp.google.com>
Date:	Mon, 12 Mar 2012 14:38:45 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Hillf Danton <dhillf@...il.com>
cc:	LKML <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] hugetlbfs: add err code in initializing module

On Mon, 12 Mar 2012, Hillf Danton wrote:

> From: Hillf Danton <dhillf@...il.com>
> Subject: [PATCH] hugetlbfs: add err code in initilizing module
> 
> Error code is added if fail to create inode kmem cache, and newly registered
> hugetlb FS is unregistered if fail to mount, both for unlikely corner cases.
> 
> Signed-off-by: Hillf Danton <dhillf@...il.com>

Acked-by: David Rientjes <rientjes@...gle.com>

> ---
> 
> --- a/fs/hugetlbfs/inode.c	Sun Mar 11 12:46:38 2012
> +++ b/fs/hugetlbfs/inode.c	Mon Mar 12 19:52:16 2012
> @@ -997,6 +997,7 @@ static int __init init_hugetlbfs_fs(void
>  	if (error)
>  		return error;
> 
> +	error = -ENOMEM;
>  	hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache",
>  					sizeof(struct hugetlbfs_inode_info),
>  					0, 0, init_once);
> @@ -1015,6 +1016,7 @@ static int __init init_hugetlbfs_fs(void
>  	}
> 
>  	error = PTR_ERR(vfsmount);
> +	unregister_filesystem(&hugetlbfs_fs_type);
> 
>   out:
>  	if (error)
> --
> 
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