diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index da992a3ad6b78254ee2cda6346dd10fd0e86ec0b..1bcd208c459f609ab3634f951e1c11b3b2e50038 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -33,6 +33,7 @@
#include "linux/mm.h"
#include "linux/slab.h"
#include "linux/vmalloc.h"
+#include "linux/smp_lock.h"
#include "linux/blkpg.h"
#include "linux/genhd.h"
#include "linux/spinlock.h"
@@ -1098,6 +1099,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
struct ubd *ubd_dev = disk->private_data;
int err = 0;
+ lock_kernel();
if(ubd_dev->count == 0){
err = ubd_open_dev(ubd_dev);
if(err){
@@ -1115,7 +1117,8 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev);
err = -EROFS;
}*/
- out:
+out:
+ unlock_kernel();
return err;
}
@@ -1123,8 +1126,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode)
{
struct ubd *ubd_dev = disk->private_data;
+ lock_kernel();
if(--ubd_dev->count == 0)
ubd_close_dev(ubd_dev);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index c5f22bb0a48efb78422f770bb298fdcc94203d96..4e2c367fec11df739ff4b19abdc5ebe1c1cd42e9 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -79,23 +79,28 @@ static int DAC960_open(struct block_device *bdev, fmode_t mode)
struct gendisk *disk = bdev->bd_disk;
DAC960_Controller_T *p = disk->queue->queuedata;
int drive_nr = (long)disk->private_data;
+ int ret = -ENXIO;
+ lock_kernel();
if (p->FirmwareType == DAC960_V1_Controller) {
if (p->V1.LogicalDriveInformation[drive_nr].
LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
- return -ENXIO;
+ goto out;
} else {
DAC960_V2_LogicalDeviceInfo_T *i =
p->V2.LogicalDeviceInformation[drive_nr];
if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
- return -ENXIO;
+ goto out;
}
check_disk_change(bdev);
if (!get_capacity(p->disks[drive_nr]))
- return -ENXIO;
- return 0;
+ goto out;
+ ret = 0;
+out:
+ unlock_kernel();
+ return ret;
}
static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 0fa26359304ce76e0212e8b284e1d9f1db0378e3..76f114f0bba32f5d0396ac9b2a1ec2a88963f7c1 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1555,10 +1555,13 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
int old_dev;
unsigned long flags;
+ lock_kernel();
old_dev = fd_device[drive];
- if (fd_ref[drive] && old_dev != system)
+ if (fd_ref[drive] && old_dev != system) {
+ unlock_kernel();
return -EBUSY;
+ }
if (mode & (FMODE_READ|FMODE_WRITE)) {
check_disk_change(bdev);
@@ -1571,8 +1574,10 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
fd_deselect (drive);
rel_fdc();
- if (wrprot)
+ if (wrprot) {
+ unlock_kernel();
return -EROFS;
+ }
}
}
@@ -1589,6 +1594,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
printk(KERN_INFO "fd%d: accessing %s-disk with %s-layout\n",drive,
unit[drive].type->name, data_types[system].name);
+ unlock_kernel();
return 0;
}
@@ -1597,6 +1603,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
struct amiga_floppy_struct *p = disk->private_data;
int drive = p - unit;
+ lock_kernel();
if (unit[drive].dirty == 1) {
del_timer (flush_track_timer + drive);
non_int_flush_track (drive);
@@ -1610,6 +1617,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
/* the mod_use counter is handled this way */
floppy_off (drive | 0x40000000);
#endif
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 65deffde60acadb7ae3329a0485ba1552b75c941..a946929735a5818e525c14e97b9011913f9e54f9 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/genhd.h>
#include <linux/netdevice.h>
+#include <linux/smp_lock.h>
#include "aoe.h"
static struct kmem_cache *buf_pool_cache;
@@ -124,13 +125,16 @@ aoeblk_open(struct block_device *bdev, fmode_t mode)
struct aoedev *d = bdev->bd_disk->private_data;
ulong flags;
+ lock_kernel();
spin_lock_irqsave(&d->lock, flags);
if (d->flags & DEVFL_UP) {
d->nopen++;
spin_unlock_irqrestore(&d->lock, flags);
+ unlock_kernel();
return 0;
}
spin_unlock_irqrestore(&d->lock, flags);
+ unlock_kernel();
return -ENODEV;
}
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 1bb8bfcfdbd9958950eb7272dda94eeba7d34cb4..aceb964765246f9448c7ec65a8369a0d6106b89f 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1850,22 +1850,34 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return 0;
}
+static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = floppy_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
static int floppy_release(struct gendisk *disk, fmode_t mode)
{
struct atari_floppy_struct *p = disk->private_data;
+ lock_kernel();
if (p->ref < 0)
p->ref = 0;
else if (!p->ref--) {
printk(KERN_ERR "floppy_release with fd_ref == 0");
p->ref = 0;
}
+ unlock_kernel();
return 0;
}
static const struct block_device_operations floppy_fops = {
.owner = THIS_MODULE,
- .open = floppy_open,
+ .open = floppy_unlocked_open,
.release = floppy_release,
.ioctl = fd_ioctl,
.media_changed = check_floppy_change,
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index a6c0494dd0544b67e454ffc9beac6592146fdcc7..665a470310a96e292e70ec313982686bb005ca1e 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -178,6 +178,7 @@ static void do_cciss_request(struct request_queue *q);
static irqreturn_t do_cciss_intx(int irq, void *dev_id);
static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id);
static int cciss_open(struct block_device *bdev, fmode_t mode);
+static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode);
static int cciss_release(struct gendisk *disk, fmode_t mode);
static int do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg);
@@ -237,7 +238,7 @@ static int cciss_compat_ioctl(struct block_device *, fmode_t,
static const struct block_device_operations cciss_fops = {
.owner = THIS_MODULE,
- .open = cciss_open,
+ .open = cciss_unlocked_open,
.release = cciss_release,
.ioctl = do_ioctl,
.getgeo = cciss_getgeo,
@@ -1042,13 +1043,28 @@ static int cciss_open(struct block_device *bdev, fmode_t mode)
return 0;
}
+static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = cciss_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
/*
* Close. Sync first.
*/
static int cciss_release(struct gendisk *disk, fmode_t mode)
{
- ctlr_info_t *host = get_host(disk);
- drive_info_struct *drv = get_drv(disk);
+ ctlr_info_t *host;
+ drive_info_struct *drv;
+
+ lock_kernel();
+ host = get_host(disk);
+ drv = get_drv(disk);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name);
@@ -1056,6 +1072,7 @@ static int cciss_release(struct gendisk *disk, fmode_t mode)
drv->usage_count--;
host->usage_count--;
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index c459aeea3c0c17d6a3868fde21efe9bf0db7c434..28937b661564237b44092843050964a0f2f58ea9 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -158,7 +158,7 @@ static int sendcmd(
unsigned int blkcnt,
unsigned int log_unit );
-static int ida_open(struct block_device *bdev, fmode_t mode);
+static int ida_unlocked_open(struct block_device *bdev, fmode_t mode);
static int ida_release(struct gendisk *disk, fmode_t mode);
static int ida_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg);
static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo);
@@ -196,7 +196,7 @@ static inline ctlr_info_t *get_host(struct gendisk *disk)
static const struct block_device_operations ida_fops = {
.owner = THIS_MODULE,
- .open = ida_open,
+ .open = ida_unlocked_open,
.release = ida_release,
.ioctl = ida_ioctl,
.getgeo = ida_getgeo,
@@ -841,13 +841,29 @@ static int ida_open(struct block_device *bdev, fmode_t mode)
return 0;
}
+static int ida_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = ida_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
/*
* Close. Sync first.
*/
static int ida_release(struct gendisk *disk, fmode_t mode)
{
- ctlr_info_t *host = get_host(disk);
+ ctlr_info_t *host;
+
+ lock_kernel();
+ host = get_host(disk);
host->usage_count--;
+ unlock_kernel();
+
return 0;
}
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index e2ab13d99d6951b6e8c6a865ae75c56678bf3072..d2b6764a7b1f2cb9821a3a5b1085d95fe73b7df1 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2604,6 +2604,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
unsigned long flags;
int rv = 0;
+ lock_kernel();
spin_lock_irqsave(&mdev->req_lock, flags);
/* to have a stable mdev->state.role
* and no race with updating open_cnt */
@@ -2618,6 +2619,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
if (!rv)
mdev->open_cnt++;
spin_unlock_irqrestore(&mdev->req_lock, flags);
+ unlock_kernel();
return rv;
}
@@ -2625,7 +2627,9 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
static int drbd_release(struct gendisk *gd, fmode_t mode)
{
struct drbd_conf *mdev = gd->private_data;
+ lock_kernel();
mdev->open_cnt--;
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 40419b066aa9ed84d58caa8c3544d86ebca47180..3126d5122b2b1ad7c36dcdfd50a734dc5b646a7b 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3616,6 +3616,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
{
int drive = (long)disk->private_data;
+ lock_kernel();
mutex_lock(&open_lock);
if (UDRS->fd_ref < 0)
UDRS->fd_ref = 0;
@@ -3626,6 +3627,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
if (!UDRS->fd_ref)
opened_bdev[drive] = NULL;
mutex_unlock(&open_lock);
+ unlock_kernel();
return 0;
}
@@ -3643,6 +3645,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
int res = -EBUSY;
char *tmp;
+ lock_kernel();
mutex_lock(&open_lock);
old_dev = UDRS->fd_device;
if (opened_bdev[drive] && opened_bdev[drive] != bdev)
@@ -3719,6 +3722,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
goto out;
}
mutex_unlock(&open_lock);
+ unlock_kernel();
return 0;
out:
if (UDRS->fd_ref < 0)
@@ -3729,6 +3733,7 @@ out:
opened_bdev[drive] = NULL;
out2:
mutex_unlock(&open_lock);
+ unlock_kernel();
return res;
}
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index d285a5481965d51022bbed1ec65766621c9b9a90..f3c636d237187df21879c0e8acc4a4c943e59ad2 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -67,6 +67,7 @@
#include <linux/compat.h>
#include <linux/suspend.h>
#include <linux/freezer.h>
+#include <linux/smp_lock.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h> /* for invalidate_bdev() */
#include <linux/completion.h>
@@ -1408,9 +1409,11 @@ static int lo_open(struct block_device *bdev, fmode_t mode)
{
struct loop_device *lo = bdev->bd_disk->private_data;
+ lock_kernel();
mutex_lock(&lo->lo_ctl_mutex);
lo->lo_refcnt++;
mutex_unlock(&lo->lo_ctl_mutex);
+ unlock_kernel();
return 0;
}
@@ -1420,6 +1423,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode)
struct loop_device *lo = disk->private_data;
int err;
+ lock_kernel();
mutex_lock(&lo->lo_ctl_mutex);
if (--lo->lo_refcnt)
@@ -1444,6 +1448,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode)
out:
mutex_unlock(&lo->lo_ctl_mutex);
out_unlocked:
+ lock_kernel();
return 0;
}
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index daba7a62a66344eecf4ea7d094be79ba77421f7d..76f8565e1e8d072864e01362dd2ea4d5d42e59f1 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -225,13 +225,21 @@ static char *pcd_buf; /* buffer for request in progress */
static int pcd_block_open(struct block_device *bdev, fmode_t mode)
{
struct pcd_unit *cd = bdev->bd_disk->private_data;
- return cdrom_open(&cd->info, bdev, mode);
+ int ret;
+
+ lock_kernel();
+ ret = cdrom_open(&cd->info, bdev, mode);
+ unlock_kernel();
+
+ return ret;
}
static int pcd_block_release(struct gendisk *disk, fmode_t mode)
{
struct pcd_unit *cd = disk->private_data;
+ lock_kernel();
cdrom_release(&cd->info, mode);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index c4d6ed9846ca98d08ed512dae6b87f48bab422fd..985f0d4f1d1e2641c6c6d7f61e8dd76a95201921 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -736,12 +736,14 @@ static int pd_open(struct block_device *bdev, fmode_t mode)
{
struct pd_unit *disk = bdev->bd_disk->private_data;
+ lock_kernel();
disk->access++;
if (disk->removable) {
pd_special_command(disk, pd_media_check);
pd_special_command(disk, pd_door_lock);
}
+ unlock_kernel();
return 0;
}
@@ -783,8 +785,10 @@ static int pd_release(struct gendisk *p, fmode_t mode)
{
struct pd_unit *disk = p->private_data;
+ lock_kernel();
if (!--disk->access && disk->removable)
pd_special_command(disk, pd_door_unlock);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index 38b4d566b81602f6899a5ed666288e80891c3f04..4457b494882a46c7ac42e85c7990dc12098b7ae0 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -300,20 +300,26 @@ static void __init pf_init_units(void)
static int pf_open(struct block_device *bdev, fmode_t mode)
{
struct pf_unit *pf = bdev->bd_disk->private_data;
+ int ret;
+ lock_kernel();
pf_identify(pf);
+ ret = -ENODEV;
if (pf->media_status == PF_NM)
- return -ENODEV;
+ goto out;
+ ret = -EROFS;
if ((pf->media_status == PF_RO) && (mode & FMODE_WRITE))
- return -EROFS;
+ goto out;
+ ret = 0;
pf->access++;
if (pf->removable)
pf_lock(pf, 1);
-
- return 0;
+out:
+ unlock_kernel();
+ return ret;
}
static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -354,14 +360,18 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
{
struct pf_unit *pf = disk->private_data;
- if (pf->access <= 0)
+ lock_kernel();
+ if (pf->access <= 0) {
+ unlock_kernel();
return -EINVAL;
+ }
pf->access--;
if (!pf->access && pf->removable)
pf_lock(pf, 0);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 40f1e31f42c4ca8906e8d0ac4a760fdeeeccf7fd..b1cbeb59bb7622e61f75bc58f373cadf1e822218 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2383,6 +2383,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
VPRINTK(DRIVER_NAME": entering open\n");
+ lock_kernel();
mutex_lock(&ctl_mutex);
pd = pkt_find_dev_from_minor(MINOR(bdev->bd_dev));
if (!pd) {
@@ -2410,6 +2411,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
}
mutex_unlock(&ctl_mutex);
+ unlock_kernel();
return 0;
out_dec:
@@ -2417,6 +2419,7 @@ out_dec:
out:
VPRINTK(DRIVER_NAME": failed open (%d)\n", ret);
mutex_unlock(&ctl_mutex);
+ unlock_kernel();
return ret;
}
@@ -2425,6 +2428,7 @@ static int pkt_close(struct gendisk *disk, fmode_t mode)
struct pktcdvd_device *pd = disk->private_data;
int ret = 0;
+ lock_kernel();
mutex_lock(&ctl_mutex);
pd->refcnt--;
BUG_ON(pd->refcnt < 0);
@@ -2433,6 +2437,7 @@ static int pkt_close(struct gendisk *disk, fmode_t mode)
pkt_release_dev(pd, flush);
}
mutex_unlock(&ctl_mutex);
+ unlock_kernel();
return ret;
}
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index f04f74e3758f8a6d636eafa33dce1acbf7fc4240..2e46815876dfa087bd6f61fef9eee12cdf766512 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -662,11 +662,23 @@ out:
return err;
}
+static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = floppy_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
static int floppy_release(struct gendisk *disk, fmode_t mode)
{
struct floppy_state *fs = disk->private_data;
struct swim __iomem *base = fs->swd->base;
+ lock_kernel();
if (fs->ref_count < 0)
fs->ref_count = 0;
else if (fs->ref_count > 0)
@@ -674,6 +686,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
if (fs->ref_count == 0)
swim_motor(base, OFF);
+ unlock_kernel();
return 0;
}
@@ -754,7 +767,7 @@ static int floppy_revalidate(struct gendisk *disk)
static const struct block_device_operations floppy_fops = {
.owner = THIS_MODULE,
- .open = floppy_open,
+ .open = floppy_unlocked_open,
.release = floppy_release,
.ioctl = floppy_ioctl,
.getgeo = floppy_getgeo,
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index f3657b2a53861add9d676ba40c927592f8954ed5..cc6a3864822cf72a7412fff054b07e520335e056 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -949,15 +949,28 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return 0;
}
+static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = floppy_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
static int floppy_release(struct gendisk *disk, fmode_t mode)
{
struct floppy_state *fs = disk->private_data;
struct swim3 __iomem *sw = fs->swim3;
+ lock_kernel();
if (fs->ref_count > 0 && --fs->ref_count == 0) {
swim3_action(fs, MOTOR_OFF);
out_8(&sw->control_bic, 0xff);
swim3_select(fs, RELAX);
}
+ unlock_kernel();
return 0;
}
@@ -1008,7 +1021,7 @@ static int floppy_revalidate(struct gendisk *disk)
}
static const struct block_device_operations floppy_fops = {
- .open = floppy_open,
+ .open = floppy_unlocked_open,
.release = floppy_release,
.ioctl = floppy_ioctl,
.media_changed = floppy_check_change,
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 102ed52d0e0f8198e093ab5b9eb7a20d6efab694..c48e148785827677b900e961f84b5d52b01e5acb 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1711,6 +1711,18 @@ err_open:
return rc;
}
+static int ub_bd_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = ub_bd_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
+
/*
*/
static int ub_bd_release(struct gendisk *disk, fmode_t mode)
@@ -1718,7 +1730,10 @@ static int ub_bd_release(struct gendisk *disk, fmode_t mode)
struct ub_lun *lun = disk->private_data;
struct ub_dev *sc = lun->udev;
+ lock_kernel();
ub_put(sc);
+ unlock_kernel();
+
return 0;
}
@@ -1798,7 +1813,7 @@ static int ub_bd_media_changed(struct gendisk *disk)
static const struct block_device_operations ub_bd_fops = {
.owner = THIS_MODULE,
- .open = ub_bd_open,
+ .open = ub_bd_unlocked_open,
.release = ub_bd_release,
.ioctl = ub_bd_ioctl,
.media_changed = ub_bd_media_changed,
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index 5663d3c284c81939f0e15f7a2c44998fdfbe7fce..f651e51a3319e0311f6a7bcc5e3d7e12d0e7d0e4 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -41,6 +41,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/string.h>
+#include <linux/smp_lock.h>
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <linux/device.h>
@@ -175,6 +176,18 @@ static int viodasd_open(struct block_device *bdev, fmode_t mode)
return 0;
}
+static int viodasd_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = viodasd_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
+
/*
* External release entry point.
*/
@@ -183,6 +196,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode)
struct viodasd_device *d = disk->private_data;
HvLpEvent_Rc hvrc;
+ lock_kernel();
/* Send the event to OS/400. We DON'T expect a response */
hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
HvLpEvent_Type_VirtualIo,
@@ -195,6 +209,9 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode)
0, 0, 0);
if (hvrc != 0)
pr_warning("HV close call failed %d\n", (int)hvrc);
+
+ unlock_kernel();
+
return 0;
}
@@ -219,7 +236,7 @@ static int viodasd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
*/
static const struct block_device_operations viodasd_fops = {
.owner = THIS_MODULE,
- .open = viodasd_open,
+ .open = viodasd_unlocked_open,
.release = viodasd_release,
.getgeo = viodasd_getgeo,
};
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 9119cd3d56a43246a57fb1fad1aa0276e5186656..91374282755dbdcaba7e36a6bbe00cabfb9ebf48 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -41,6 +41,7 @@
#include <linux/cdrom.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/scatterlist.h>
#include <xen/xen.h>
@@ -1018,13 +1019,18 @@ static int blkfront_is_ready(struct xenbus_device *dev)
static int blkif_open(struct block_device *bdev, fmode_t mode)
{
struct blkfront_info *info = bdev->bd_disk->private_data;
+
+ lock_kernel();
info->users++;
+ unlock_kernel();
+
return 0;
}
static int blkif_release(struct gendisk *disk, fmode_t mode)
{
struct blkfront_info *info = disk->private_data;
+ lock_kernel();
info->users--;
if (info->users == 0) {
/* Check whether we have been instructed to close. We will
@@ -1036,6 +1042,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)
if (state == XenbusStateClosing && info->is_ready)
blkfront_closing(dev);
}
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index ac278ac908d50a8b27046d5a3424558809e0f621..b71888b909a0e43dea2ad8cf36faffb1de27701b 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -89,6 +89,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
+#include <linux/smp_lock.h>
#include <linux/ata.h>
#include <linux/hdreg.h>
#include <linux/platform_device.h>
@@ -901,11 +902,14 @@ static int ace_open(struct block_device *bdev, fmode_t mode)
dev_dbg(ace->dev, "ace_open() users=%i\n", ace->users + 1);
+ lock_kernel();
spin_lock_irqsave(&ace->lock, flags);
ace->users++;
spin_unlock_irqrestore(&ace->lock, flags);
check_disk_change(bdev);
+ unlock_kernel();
+
return 0;
}
@@ -917,6 +921,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode)
dev_dbg(ace->dev, "ace_release() users=%i\n", ace->users - 1);
+ lock_kernel();
spin_lock_irqsave(&ace->lock, flags);
ace->users--;
if (ace->users == 0) {
@@ -924,6 +929,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode)
ace_out(ace, ACE_CTRL, val & ~ACE_CTRL_LOCKREQ);
}
spin_unlock_irqrestore(&ace->lock, flags);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index 9114654b54d9a933b1728830b120a9059bcf24c3..d75b2bb601adbb2a4eae42b5c259918fc7823df5 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -33,6 +33,7 @@
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/bitops.h>
+#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <asm/setup.h>
@@ -153,6 +154,7 @@ static int z2_open(struct block_device *bdev, fmode_t mode)
device = MINOR(bdev->bd_dev);
+ lock_kernel();
if ( current_device != -1 && current_device != device )
{
rc = -EBUSY;
@@ -294,20 +296,25 @@ static int z2_open(struct block_device *bdev, fmode_t mode)
set_capacity(z2ram_gendisk, z2ram_size >> 9);
}
+ unlock_kernel();
return 0;
err_out_kfree:
kfree(z2ram_map);
err_out:
+ unlock_kernel();
return rc;
}
static int
z2_release(struct gendisk *disk, fmode_t mode)
{
- if ( current_device == -1 )
- return 0;
-
+ lock_kernel();
+ if ( current_device == -1 ) {
+ unlock_kernel();
+ return 0;
+ }
+ unlock_kernel();
/*
* FIXME: unmap memory
*/
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 1772fd914fb9ad8ca38124bda8079405e014ddfc..261107d1457c9a57599dbbb2db6c04a87c828a0a 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -493,12 +493,18 @@ static struct cdrom_device_ops gdrom_ops = {
static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
{
- return cdrom_open(gd.cd_info, bdev, mode);
+ int ret;
+ lock_kernel();
+ ret = cdrom_open(gd.cd_info, bdev, mode);
+ unlock_kernel();
+ return ret;
}
static int gdrom_bdops_release(struct gendisk *disk, fmode_t mode)
{
+ lock_kernel();
cdrom_release(gd.cd_info, mode);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index 16dada0627ee62d8c84922c1c92ac5c8565803fa..56bf9f44700c401f2a2556177c57f526aad868c7 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -154,13 +154,21 @@ static const struct file_operations proc_viocd_operations = {
static int viocd_blk_open(struct block_device *bdev, fmode_t mode)
{
struct disk_info *di = bdev->bd_disk->private_data;
- return cdrom_open(&di->viocd_info, bdev, mode);
+ int ret;
+
+ lock_kernel();
+ ret = cdrom_open(&di->viocd_info, bdev, mode);
+ unlock_kernel();
+
+ return ret;
}
static int viocd_blk_release(struct gendisk *disk, fmode_t mode)
{
struct disk_info *di = disk->private_data;
+ lock_kernel();
cdrom_release(&di->viocd_info, mode);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index bf9f61a5c2f8651769c500c89212d0c7ff9d8a2c..5108e9739c96a73f4d3f67551b91362279288a1b 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1591,17 +1591,19 @@ static struct ide_driver ide_cdrom_driver = {
static int idecd_open(struct block_device *bdev, fmode_t mode)
{
- struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
- int rc = -ENOMEM;
+ struct cdrom_info *info;
+ int rc = -ENXIO;
+ lock_kernel();
+ info = ide_cd_get(bdev->bd_disk);
if (!info)
- return -ENXIO;
+ goto out;
rc = cdrom_open(&info->devinfo, bdev, mode);
-
if (rc < 0)
ide_cd_put(info);
-
+out:
+ unlock_kernel();
return rc;
}
@@ -1609,9 +1611,11 @@ static int idecd_release(struct gendisk *disk, fmode_t mode)
{
struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
+ lock_kernel();
cdrom_release(&info->devinfo, mode);
ide_cd_put(info);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 883f0c979c9ff12dca997979554dd493d716572b..137337a795a978dc79c8f99863bf4e443fbccef2 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -1,3 +1,4 @@
+#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
@@ -237,6 +238,18 @@ out_put_idkp:
return ret;
}
+static int ide_gd_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+ int ret;
+
+ lock_kernel();
+ ret = ide_gd_open(bdev, mode);
+ unlock_kernel();
+
+ return ret;
+}
+
+
static int ide_gd_release(struct gendisk *disk, fmode_t mode)
{
struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
@@ -244,6 +257,7 @@ static int ide_gd_release(struct gendisk *disk, fmode_t mode)
ide_debug_log(IDE_DBG_FUNC, "enter");
+ lock_kernel();
if (idkp->openers == 1)
drive->disk_ops->flush(drive);
@@ -255,6 +269,7 @@ static int ide_gd_release(struct gendisk *disk, fmode_t mode)
idkp->openers--;
ide_disk_put(idkp);
+ unlock_kernel();
return 0;
}
@@ -321,7 +336,7 @@ static int ide_gd_ioctl(struct block_device *bdev, fmode_t mode,
static const struct block_device_operations ide_gd_ops = {
.owner = THIS_MODULE,
- .open = ide_gd_open,
+ .open = ide_gd_unlocked_open,
.release = ide_gd_release,
.ioctl = ide_gd_ioctl,
.getgeo = ide_gd_getgeo,
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 39b0a5c45f07a179a5068d1ef81f0b436cc20d9e..6d622cb5ac8160c57c372bc0c0d30f5ee912d6e0 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1907,7 +1907,11 @@ static const struct file_operations idetape_fops = {
static int idetape_open(struct block_device *bdev, fmode_t mode)
{
- struct ide_tape_obj *tape = ide_tape_get(bdev->bd_disk, false, 0);
+ struct ide_tape_obj *tape;
+
+ lock_kernel();
+ tape = ide_tape_get(bdev->bd_disk, false, 0);
+ unlock_kernel();
if (!tape)
return -ENXIO;
@@ -1919,7 +1923,10 @@ static int idetape_release(struct gendisk *disk, fmode_t mode)
{
struct ide_tape_obj *tape = ide_drv_g(disk, ide_tape_obj);
+ lock_kernel();
ide_tape_put(tape);
+ unlock_kernel();
+
return 0;
}
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d505a96845c11774228cedd553646f8866cb8f7f..a3f21dc02bd891fb84d8df00c5b22b2ad15a2e64 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -15,6 +15,7 @@
#include <linux/blkpg.h>
#include <linux/bio.h>
#include <linux/buffer_head.h>
+#include <linux/smp_lock.h>
#include <linux/mempool.h>
#include <linux/slab.h>
#include <linux/idr.h>
@@ -338,6 +339,7 @@ static int dm_blk_open(struct block_device *bdev, fmode_t mode)
{
struct mapped_device *md;
+ lock_kernel();
spin_lock(&_minor_lock);
md = bdev->bd_disk->private_data;
@@ -355,6 +357,7 @@ static int dm_blk_open(struct block_device *bdev, fmode_t mode)
out:
spin_unlock(&_minor_lock);
+ unlock_kernel();
return md ? 0 : -ENXIO;
}
@@ -362,8 +365,12 @@ out:
static int dm_blk_close(struct gendisk *disk, fmode_t mode)
{
struct mapped_device *md = disk->private_data;
+
+ lock_kernel();
atomic_dec(&md->open_count);
dm_put(md);
+ unlock_kernel();
+
return 0;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 1893af6787790a7d7919de4f478313fa4a2ba957..700c96edf9b2589811bb5cbeb1567a1f156e64f9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -36,6 +36,7 @@
#include <linux/blkdev.h>
#include <linux/sysctl.h>
#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
#include <linux/buffer_head.h> /* for invalidate_bdev */
#include <linux/poll.h>
#include <linux/ctype.h>
@@ -5902,6 +5903,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
mddev_t *mddev = mddev_find(bdev->bd_dev);
int err;
+ lock_kernel();
if (mddev->gendisk != bdev->bd_disk) {
/* we are racing with mddev_put which is discarding this
* bd_disk.
@@ -5910,6 +5912,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
/* Wait until bdev->bd_disk is definitely gone */
flush_scheduled_work();
/* Then retry the open from the top */
+ unlock_kernel();
return -ERESTARTSYS;
}
BUG_ON(mddev != bdev->bd_disk->private_data);
@@ -5923,6 +5926,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
check_disk_size_change(mddev->gendisk, bdev);
out:
+ unlock_kernel();
return err;
}
@@ -5931,8 +5935,10 @@ static int md_release(struct gendisk *disk, fmode_t mode)
mddev_t *mddev = disk->private_data;
BUG_ON(!mddev);
+ lock_kernel();
atomic_dec(&mddev->openers);
mddev_put(mddev);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 56645408d225f26bb032026d40095a6f6be16853..eef78a068fd136d1855c72d53bd339e7c509a89b 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -18,6 +18,7 @@
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/memstick.h>
#define DRIVER_NAME "mspro_block"
@@ -179,6 +180,7 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
struct mspro_block_data *msb = disk->private_data;
int rc = -ENXIO;
+ lock_kernel();
mutex_lock(&mspro_block_disk_lock);
if (msb && msb->card) {
@@ -190,6 +192,7 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
}
mutex_unlock(&mspro_block_disk_lock);
+ unlock_kernel();
return rc;
}
@@ -221,7 +224,11 @@ static int mspro_block_disk_release(struct gendisk *disk)
static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
{
- return mspro_block_disk_release(disk);
+ int ret;
+ lock_kernel();
+ ret = mspro_block_disk_release(disk);
+ unlock_kernel();
+ return ret;
}
static int mspro_block_bd_getgeo(struct block_device *bdev,
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index d1bdf8abe5db90561738021ec20f98b8ca69be0a..a5bc3ee0d93e667bf8298a7bdc27f77901d725fb 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -53,6 +53,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2o.h>
+#include <linux/smp_lock.h>
#include <linux/mempool.h>
@@ -577,6 +578,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
if (!dev->i2o_dev)
return -ENODEV;
+ lock_kernel();
if (dev->power > 0x1f)
i2o_block_device_power(dev, 0x02);
@@ -585,6 +587,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
i2o_block_device_lock(dev->i2o_dev, -1);
osm_debug("Ready.\n");
+ unlock_kernel();
return 0;
};
@@ -615,6 +618,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode)
if (!dev->i2o_dev)
return 0;
+ lock_kernel();
i2o_block_device_flush(dev->i2o_dev);
i2o_block_device_unlock(dev->i2o_dev, -1);
@@ -625,6 +629,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode)
operation = 0x24;
i2o_block_device_power(dev, operation);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index cb9fbc83b09095f8a0aa77572c0e9304641f300b..8433cde29c8badaf7d8eb107d4a275fc746398b4 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -29,6 +29,7 @@
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
+#include <linux/smp_lock.h>
#include <linux/scatterlist.h>
#include <linux/string_helpers.h>
@@ -107,6 +108,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk);
int ret = -ENXIO;
+ lock_kernel();
if (md) {
if (md->usage == 2)
check_disk_change(bdev);
@@ -117,6 +119,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
ret = -EROFS;
}
}
+ unlock_kernel();
return ret;
}
@@ -125,7 +128,9 @@ static int mmc_blk_release(struct gendisk *disk, fmode_t mode)
{
struct mmc_blk_data *md = disk->private_data;
+ lock_kernel();
mmc_blk_put(md);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 8c83b11a77d595123009f3a5d97832b29ac7fea6..5ca80aee2ed015fd39c1e18a69e1aa7a7c289200 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -165,8 +165,9 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
int ret;
if (!dev)
- return -ERESTARTSYS;
+ return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
+ lock_kernel();
mutex_lock(&dev->lock);
if (!dev->mtd) {
@@ -183,6 +184,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
+ unlock_kernel();
return ret;
}
@@ -194,6 +196,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!dev)
return ret;
+ lock_kernel();
mutex_lock(&dev->lock);
/* Release one reference, we sure its not the last one here*/
@@ -206,6 +209,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
+ unlock_kernel();
return ret;
}
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 17b033d0e0502a0d422b272635e4893f5c8bb821..1a84fae155e1b2890652b916eebb65c7ea7dfee0 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -21,6 +21,7 @@
#include <linux/hdreg.h>
#include <linux/async.h>
#include <linux/mutex.h>
+#include <linux/smp_lock.h>
#include <asm/ccwdev.h>
#include <asm/ebcdic.h>
@@ -2235,6 +2236,7 @@ static int dasd_open(struct block_device *bdev, fmode_t mode)
if (!block)
return -ENODEV;
+ lock_kernel();
base = block->base;
atomic_inc(&block->open_count);
if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) {
@@ -2269,12 +2271,14 @@ static int dasd_open(struct block_device *bdev, fmode_t mode)
goto out;
}
+ unlock_kernel();
return 0;
out:
module_put(base->discipline->owner);
unlock:
atomic_dec(&block->open_count);
+ unlock_kernel();
return rc;
}
@@ -2282,8 +2286,10 @@ static int dasd_release(struct gendisk *disk, fmode_t mode)
{
struct dasd_block *block = disk->private_data;
+ lock_kernel();
atomic_dec(&block->open_count);
module_put(block->base->discipline->owner);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 9b43ae94beba1dea263e1687d38060e9a1f243d6..2bd72aa34c59c2e6d62b418a06fe8fb8747d27bc 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -14,6 +14,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
+#include <linux/smp_lock.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
@@ -775,6 +776,7 @@ dcssblk_open(struct block_device *bdev, fmode_t mode)
struct dcssblk_dev_info *dev_info;
int rc;
+ lock_kernel();
dev_info = bdev->bd_disk->private_data;
if (NULL == dev_info) {
rc = -ENODEV;
@@ -784,6 +786,7 @@ dcssblk_open(struct block_device *bdev, fmode_t mode)
bdev->bd_block_size = 4096;
rc = 0;
out:
+ unlock_kernel();
return rc;
}
@@ -794,6 +797,7 @@ dcssblk_release(struct gendisk *disk, fmode_t mode)
struct segment_info *entry;
int rc;
+ lock_kernel();
if (!dev_info) {
rc = -ENODEV;
goto out;
@@ -811,6 +815,7 @@ dcssblk_release(struct gendisk *disk, fmode_t mode)
up_write(&dcssblk_devices_sem);
rc = 0;
out:
+ unlock_kernel();
return rc;
}
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 097da8ce6be6631eb515105773e523be43f02fb5..b7de02525ec901ebbee390b2798043eb1938f4bd 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -16,6 +16,7 @@
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/blkdev.h>
+#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/buffer_head.h>
#include <linux/kernel.h>
@@ -361,6 +362,7 @@ tapeblock_open(struct block_device *bdev, fmode_t mode)
struct tape_device * device;
int rc;
+ lock_kernel();
device = tape_get_device(disk->private_data);
if (device->required_tapemarks) {
@@ -384,12 +386,14 @@ tapeblock_open(struct block_device *bdev, fmode_t mode)
* is called.
*/
tape_state_set(device, TS_BLKUSE);
+ unlock_kernel();
return 0;
release:
tape_release(device);
put_device:
tape_put_device(device);
+ unlock_kernel();
return rc;
}
@@ -403,10 +407,12 @@ static int
tapeblock_release(struct gendisk *disk, fmode_t mode)
{
struct tape_device *device = disk->private_data;
-
+
+ lock_kernel();
tape_state_set(device, TS_IN_USE);
tape_release(device);
tape_put_device(device);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 633ac32b25c1b0d98b3be9147c797c8611bc3ce4..01680c7c850728503bea1bf41f6658068f0f34cd 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -795,6 +795,7 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_open\n"));
+ lock_kernel();
sdev = sdkp->device;
/*
@@ -838,10 +839,12 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
scsi_set_medium_removal(sdev, SCSI_REMOVAL_PREVENT);
}
+ unlock_kernel();
return 0;
error_out:
scsi_disk_put(sdkp);
+ unlock_kernel();
return retval;
}
@@ -863,6 +866,7 @@ static int sd_release(struct gendisk *disk, fmode_t mode)
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_release\n"));
+ lock_kernel();
if (!--sdkp->openers && sdev->removable) {
if (scsi_block_when_processing_errors(sdev))
scsi_set_medium_removal(sdev, SCSI_REMOVAL_ALLOW);
@@ -873,6 +877,7 @@ static int sd_release(struct gendisk *disk, fmode_t mode)
* XXX is followed by a "rmmod sd_mod"?
*/
scsi_disk_put(sdkp);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index d42fa6468f41e7fb436647d9bfe7d06a93acf7be..ba9c3e0387ce313fc9ee588552c42101418e9f13 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -467,22 +467,27 @@ static int sr_prep_fn(struct request_queue *q, struct request *rq)
static int sr_block_open(struct block_device *bdev, fmode_t mode)
{
- struct scsi_cd *cd = scsi_cd_get(bdev->bd_disk);
+ struct scsi_cd *cd;
int ret = -ENXIO;
+ lock_kernel();
+ cd = scsi_cd_get(bdev->bd_disk);
if (cd) {
ret = cdrom_open(&cd->cdi, bdev, mode);
if (ret)
scsi_cd_put(cd);
}
+ unlock_kernel();
return ret;
}
static int sr_block_release(struct gendisk *disk, fmode_t mode)
{
struct scsi_cd *cd = scsi_cd(disk);
+ lock_kernel();
cdrom_release(&cd->cdi, mode);
scsi_cd_put(cd);
+ unlock_kernel();
return 0;
}
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index a9aff90e58e0e8b00b5ed379f70cef57095bee8f..87a11c9293e95e28da2e562876bfb697b630a6e3 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -25,6 +25,7 @@
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
+#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@@ -1326,6 +1327,7 @@ static int blkvsc_open(struct block_device *bdev, fmode_t mode)
DPRINT_DBG(BLKVSC_DRV, "- users %d disk %s\n", blkdev->users,
blkdev->gd->disk_name);
+ lock_kernel();
spin_lock(&blkdev->lock);
if (!blkdev->users && blkdev->device_type == DVD_TYPE) {
@@ -1337,6 +1339,7 @@ static int blkvsc_open(struct block_device *bdev, fmode_t mode)
blkdev->users++;
spin_unlock(&blkdev->lock);
+ unlock_kernel();
return 0;
}
@@ -1347,6 +1350,7 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
DPRINT_DBG(BLKVSC_DRV, "- users %d disk %s\n", blkdev->users,
blkdev->gd->disk_name);
+ lock_kernel();
spin_lock(&blkdev->lock);
if (blkdev->users == 1) {
spin_unlock(&blkdev->lock);
@@ -1357,6 +1361,7 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
blkdev->users--;
spin_unlock(&blkdev->lock);
+ unlock_kernel();
return 0;
}
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 99d6af8117473b661a64a5f05e58a024570d4fe0..693c2bf5d65e36f96f07475ef8209bb1407ca81b 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1345,13 +1345,12 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
return ret;
}
- lock_kernel();
restart:
ret = -ENXIO;
disk = get_gendisk(bdev->bd_dev, &partno);
if (!disk)
- goto out_unlock_kernel;
+ goto out;
mutex_lock_nested(&bdev->bd_mutex, for_part);
if (!bdev->bd_openers) {
@@ -1431,7 +1430,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
if (for_part)
bdev->bd_part_count++;
mutex_unlock(&bdev->bd_mutex);
- unlock_kernel();
return 0;
out_clear:
@@ -1444,9 +1442,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
bdev->bd_contains = NULL;
out_unlock_bdev:
mutex_unlock(&bdev->bd_mutex);
- out_unlock_kernel:
- unlock_kernel();
-
+ out:
if (disk)
module_put(disk->fops->owner);
put_disk(disk);
@@ -1515,7 +1511,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
struct block_device *victim = NULL;
mutex_lock_nested(&bdev->bd_mutex, for_part);
- lock_kernel();
if (for_part)
bdev->bd_part_count--;
@@ -1540,7 +1535,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
victim = bdev->bd_contains;
bdev->bd_contains = NULL;
}
- unlock_kernel();
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
if (victim)