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-rw-r--r--drivers/block/DAC960.c13
-rw-r--r--drivers/block/amiflop.c12
-rw-r--r--drivers/block/aoe/aoeblk.c4
-rw-r--r--drivers/block/ataflop.c14
-rw-r--r--drivers/block/cciss.c23
-rw-r--r--drivers/block/cpqarray.c22
-rw-r--r--drivers/block/drbd/drbd_main.c4
-rw-r--r--drivers/block/floppy.c5
-rw-r--r--drivers/block/loop.c5
-rw-r--r--drivers/block/paride/pcd.c10
-rw-r--r--drivers/block/paride/pd.c4
-rw-r--r--drivers/block/paride/pf.c20
-rw-r--r--drivers/block/pktcdvd.c5
-rw-r--r--drivers/block/swim.c15
-rw-r--r--drivers/block/swim3.c15
-rw-r--r--drivers/block/ub.c17
-rw-r--r--drivers/block/viodasd.c19
-rw-r--r--drivers/block/xen-blkfront.c7
-rw-r--r--drivers/block/xsysace.c6
-rw-r--r--drivers/block/z2ram.c13
20 files changed, 207 insertions, 26 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index c5f22bb0a48e..4e2c367fec11 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 0fa26359304c..76f114f0bba3 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 65deffde60ac..a946929735a5 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 1bb8bfcfdbd9..aceb96476524 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 a6c0494dd054..665a470310a9 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 c459aeea3c0c..28937b661564 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 e2ab13d99d69..d2b6764a7b1f 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 40419b066aa9..3126d5122b2b 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 d285a5481965..f3c636d23718 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 daba7a62a663..76f8565e1e8d 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 c4d6ed9846ca..985f0d4f1d1e 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 38b4d566b816..4457b494882a 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 40f1e31f42c4..b1cbeb59bb76 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 f04f74e3758f..2e46815876df 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 f3657b2a5386..cc6a3864822c 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 102ed52d0e0f..c48e14878582 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 5663d3c284c8..f651e51a3319 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 9119cd3d56a4..91374282755d 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 ac278ac908d5..b71888b909a0 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 9114654b54d9..d75b2bb601ad 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
*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 20:23:43 +0000