linux-kernel - Re: [PATCH] aacraid: BKL push down

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Date:	Thu, 22 May 2008 14:55:20 -0700 (PDT)
From:	"Randy.Dunlap" <rdunlap@...otime.net>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] aacraid: BKL push down

On Thu, 22 May 2008, Alan Cox wrote:

> The aacraid definitely needs the BKL internally right now so push the
> lock take down into the driver but go no further
> 
> Signed-off-by: Alan Cox <alan@...hat.com>

Wrong patch file ??

> diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
> index b31faec..5e6b47f 100644
> --- a/drivers/scsi/3w-9xxx.c
> +++ b/drivers/scsi/3w-9xxx.c
> @@ -111,7 +111,7 @@ static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_H
>  static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id);
>  static char *twa_aen_severity_lookup(unsigned char severity_code);
>  static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id);
> -static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
> +static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
>  static int twa_chrdev_open(struct inode *inode, struct file *file);
>  static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host);
>  static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id);
> @@ -202,7 +202,7 @@ static struct device_attribute *twa_host_attrs[] = {
>  /* File operations struct for character device */
>  static const struct file_operations twa_fops = {
>  	.owner		= THIS_MODULE,
> -	.ioctl		= twa_chrdev_ioctl,
> +	.unlocked_ioctl	= twa_chrdev_ioctl,
>  	.open		= twa_chrdev_open,
>  	.release	= NULL
>  };
> @@ -619,7 +619,7 @@ out:
>  } /* End twa_check_srl() */
>  
>  /* This function handles ioctl for the character device */
> -static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
> +static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>  {
>  	long timeout;
>  	unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
> @@ -635,7 +635,8 @@ static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
>  	TW_Event *event;
>  	struct timeval current_time;
>  	u32 current_time_ms;
> -	TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)];
> +	unsigned int minor = iminor(file->f_path.dentry->d_inode);
> +	TW_Device_Extension *tw_dev = twa_device_extension_list[minor];
>  	int retval = TW_IOCTL_ERROR_OS_EFAULT;
>  	void __user *argp = (void __user *)arg;
>  
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 8c22329..33a6a2e 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -874,7 +874,7 @@ static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
>  } /* End tw_allocate_memory() */
>  
>  /* This function handles ioctl for the character device */
> -static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
> +static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>  {
>  	int request_id;
>  	dma_addr_t dma_handle;
> @@ -886,7 +886,8 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
>  	long timeout;
>  	TW_New_Ioctl *tw_ioctl;
>  	TW_Passthru *passthru;
> -	TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)];
> +	unsigned int minor = iminor(file->f_path.dentry->d_inode);
> +	TW_Device_Extension *tw_dev = tw_device_extension_list[minor];
>  	int retval = -EFAULT;
>  	void __user *argp = (void __user *)arg;
>  
> @@ -1043,7 +1044,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
>  /* File operations struct for character device */
>  static const struct file_operations tw_fops = {
>  	.owner		= THIS_MODULE,
> -	.ioctl		= tw_chrdev_ioctl,
> +	.unlocked_ioctl	= tw_chrdev_ioctl,
>  	.open		= tw_chrdev_open,
>  	.release	= NULL
>  };
> --

-- 
~Randy
--
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