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block: push down BKL into .locked_ioctl

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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 <arnd@arndb.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Arnd Bergmann
2010-07-08 10:18:46 +02:00
committed by Jens Axboe
parent 3448406244
commit 8a6cfeb6de
30 changed files with 253 additions and 85 deletions
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drivers/block/pktcdvd.c
+9 -4
View File
@@ -57,6 +57,7 @@
#include <linux/seq_file.h>
#include <linux/miscdevice.h>
#include <linux/freezer.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <scsi/scsi_cmnd.h>
@@ -2762,10 +2763,12 @@ out_mem:
static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg)
{
struct pktcdvd_device *pd = bdev->bd_disk->private_data;
int ret;
VPRINTK("pkt_ioctl: cmd %x, dev %d:%d\n", cmd,
MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev));
lock_kernel();
switch (cmd) {
case CDROMEJECT:
/*
@@ -2783,14 +2786,16 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
case CDROM_LAST_WRITTEN:
case CDROM_SEND_PACKET:
case SCSI_IOCTL_SEND_COMMAND:
return __blkdev_driver_ioctl(pd->bdev, mode, cmd, arg);
ret = __blkdev_driver_ioctl(pd->bdev, mode, cmd, arg);
break;
default:
VPRINTK(DRIVER_NAME": Unknown ioctl for %s (%x)\n", pd->name, cmd);
return -ENOTTY;
ret = -ENOTTY;
}
unlock_kernel();
return 0;
return ret;
}
static int pkt_media_changed(struct gendisk *disk)
@@ -2812,7 +2817,7 @@ static const struct block_device_operations pktcdvd_ops = {
.owner = THIS_MODULE,
.open = pkt_open,
.release = pkt_close,
.locked_ioctl = pkt_ioctl,
.ioctl = pkt_ioctl,
.media_changed = pkt_media_changed,
};