linux-kernel - Re: [PATCH] blkdev: Fix blkdev_open to release the bdev on error

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Message-ID: <5666AC38.8050806@arm.com>
Date:	Tue, 8 Dec 2015 10:08:56 +0000
From:	"Suzuki K. Poulose" <Suzuki.Poulose@....com>
To:	Al Viro <viro@...IV.linux.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Marc Zyngier <marc.zyngier@....com>, Tejun Heo <tj@...nel.org>,
	stable <stable@...r.kernel.org>
Subject: Re: [PATCH] blkdev: Fix blkdev_open to release the bdev on error

On 08/12/15 07:58, Al Viro wrote:
> On Mon, Dec 07, 2015 at 10:49:05AM -0800, Linus Torvalds wrote:
>> On Mon, Dec 7, 2015 at 10:05 AM, Suzuki K. Poulose
>> <suzuki.poulose@....com> wrote:

...

> Anyway, the fix for 9p bogosity follows; it definitely fixes a bug there,
> and I'm fairly sure that it fixes the bug that had been reported.
> A confirmation would be nice, of course...
>
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> ---
> diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
> index 699941e..5110785 100644
> --- a/fs/9p/vfs_inode.c
> +++ b/fs/9p/vfs_inode.c
> @@ -451,9 +451,9 @@ void v9fs_evict_inode(struct inode *inode)
>   {
>   	struct v9fs_inode *v9inode = V9FS_I(inode);
>
> -	truncate_inode_pages_final(inode->i_mapping);
> +	truncate_inode_pages_final(&inode->i_data);
>   	clear_inode(inode);
> -	filemap_fdatawrite(inode->i_mapping);
> +	filemap_fdatawrite(&inode->i_data);
>
>   	v9fs_cache_inode_put_cookie(inode);
>   	/* clunk the fid stashed in writeback_fid */
>

This patch fixes the problem :

Tested-by: Suzuki K. Poulose <suzuki.poulose@....com>

Thanks
Suzuki


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