linux-kernel - Re: [PATCH] logfs: kill BKL

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Date:	Wed, 19 May 2010 14:51:51 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Arnd Bergmann <arnd@...db.de>,
	Jörn Engel <joern@...fs.org>
Cc:	John Kacur <jkacur@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Jan Blunck <jblunck@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] logfs: kill BKL

On Tue, Apr 27, 2010 at 10:30:06PM +0200, Arnd Bergmann wrote:
> logfs does not need the BKL, so use ->unlocked_ioctl instead
> of ->ioctl in file operations.
> ---
> On Tuesday 27 April 2010 22:12:52 Frederic Weisbecker wrote:
> > 
> > I've applied this series in bkl/ioctl, it passed allyesconfig in sparc.
> > I will apply the others from you and John tomorrow or so (and will enjoy
> > my part as well). Jörn, please queue this patch if you want to, as you prefer,
> > we can host it as well if necessary.
> 
> I believe that this is the one that Jörn would prefer to go in. I hope I
> got it right by editing the patch.



Jörn, any news about this patch? If you're fine with it,
could you queue it for .35 ?

Thanks.



> 
> diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c
> index 2396a85..a801b5e 100644
> --- a/fs/logfs/dir.c
> +++ b/fs/logfs/dir.c
> @@ -821,7 +821,7 @@ const struct inode_operations logfs_dir_iops = {
>  };
>  const struct file_operations logfs_dir_fops = {
>  	.fsync		= logfs_fsync,
> -	.ioctl		= logfs_ioctl,
> +	.unlocked_ioctl	= logfs_ioctl,
>  	.readdir	= logfs_readdir,
>  	.read		= generic_read_dir,
>  };
> diff --git a/fs/logfs/file.c b/fs/logfs/file.c
> index 370f367..1dbc342 100644
> --- a/fs/logfs/file.c
> +++ b/fs/logfs/file.c
> @@ -171,9 +172,9 @@ static int logfs_releasepage(struct page *page, gfp_t only_xfs_uses_this)
>  }
>  
>  
> -int logfs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
> -		unsigned long arg)
> +long logfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>  {
> +	struct inode *inode = file->f_path.dentry->d_inode;
>  	struct logfs_inode *li = logfs_inode(inode);
>  	unsigned int oldflags, flags;
>  	int err;
> @@ -243,7 +255,7 @@ const struct file_operations logfs_reg_fops = {
>  	.aio_read	= generic_file_aio_read,
>  	.aio_write	= generic_file_aio_write,
>  	.fsync		= logfs_fsync,
> -	.ioctl		= logfs_ioctl,
> +	.unlocked_ioctl	= logfs_ioctl,
>  	.llseek		= generic_file_llseek,
>  	.mmap		= generic_file_readonly_mmap,
>  	.open		= generic_file_open,
> diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
> index 0a3df1a..8432c51 100644
> --- a/fs/logfs/logfs.h
> +++ b/fs/logfs/logfs.h
> @@ -501,8 +501,8 @@ extern const struct inode_operations logfs_reg_iops;
>  extern const struct file_operations logfs_reg_fops;
>  extern const struct address_space_operations logfs_reg_aops;
>  int logfs_readpage(struct file *file, struct page *page);
> -int logfs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
> -		unsigned long arg);
> +long logfs_ioctl(struct file *file, unsigned int cmd,
> +		 unsigned long arg);
>  int logfs_fsync(struct file *file, struct dentry *dentry, int datasync);
>  
>  /* gc.c */

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