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block: push down BKL into .locked_ioctl

Browse source 
As a preparation for the removal of the big kernel
lock in the block layer, this removes the BKL
from the common ioctl handling code, moving it
into every single driver still using it.

Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Arnd Bergmann 2010-07-08 10:18:46 +02:00 • committed by Jens Axboe
commit 8a6cfeb6de
30 changed files with 253 additions and 85 deletions
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11
drivers/cdrom/gdrom.c
View file

@ -34,6 +34,7 @@
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/smp_lock.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
@ -509,7 +510,13 @@ static int gdrom_bdops_mediachanged(struct gendisk *disk)
static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
return cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);
int ret;
lock_kernel();
ret = cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);
unlock_kernel();
return ret;
}
static const struct block_device_operations gdrom_bdops = {
@ -517,7 +524,7 @@ static const struct block_device_operations gdrom_bdops = {
.open = gdrom_bdops_open,
.release = gdrom_bdops_release,
.media_changed = gdrom_bdops_mediachanged,
.locked_ioctl = gdrom_bdops_ioctl,
.ioctl = gdrom_bdops_ioctl,
};
static irqreturn_t gdrom_command_interrupt(int irq, void *dev_id)

11
drivers/cdrom/viocd.c
View file

@ -42,6 +42,7 @@
#include <linux/module.h>
#include <linux/completion.h>
#include <linux/proc_fs.h>
#include <linux/smp_lock.h>
#include <linux/seq_file.h>
#include <linux/scatterlist.h>
@ -167,7 +168,13 @@ static int viocd_blk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
struct disk_info *di = bdev->bd_disk->private_data;
return cdrom_ioctl(&di->viocd_info, bdev, mode, cmd, arg);
int ret;
lock_kernel();
ret = cdrom_ioctl(&di->viocd_info, bdev, mode, cmd, arg);
unlock_kernel();
return ret;
}
static int viocd_blk_media_changed(struct gendisk *disk)
@ -180,7 +187,7 @@ static const struct block_device_operations viocd_fops = {
.owner = THIS_MODULE,
.open = viocd_blk_open,
.release = viocd_blk_release,
.locked_ioctl = viocd_blk_ioctl,
.ioctl = viocd_blk_ioctl,
.media_changed = viocd_blk_media_changed,
};