AcoSail/kernel_optimize_test
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block: autoconvert trivial BKL users to private mutex

Browse Source 
The block device drivers have all gained new lock_kernel
calls from a recent pushdown, and some of the drivers
were already using the BKL before.

This turns the BKL into a set of per-driver mutexes.
Still need to check whether this is safe to do.

file=$1
name=$2
if grep -q lock_kernel ${file} ; then
    if grep -q 'include.*linux.mutex.h' ${file} ; then
            sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
    else
            sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
    fi
    sed -i ${file} \
        -e "/^#include.*linux.mutex.h/,$ {
                1,/^\(static\|int\|long\)/ {
                     /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);

} }"  \
    -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
    -e '/[      ]*cycle_kernel_lock();/d'
else
    sed -i -e '/include.*\<smp_lock.h\>/d' ${file}  \
                -e '/cycle_kernel_lock()/d'
fi

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2010-06-02 14:28:52 +02:00
parent 613655fa39
commit 2a48fc0ab2
43 changed files with 277 additions and 250 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
block/bsg.c
View File

@ -20,7 +20,6 @@
#include <linux/uio.h>
#include <linux/idr.h>
#include <linux/bsg.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
@ -843,9 +842,7 @@ static int bsg_open(struct inode *inode, struct file *file)
{
struct bsg_device *bd;
lock_kernel();
bd = bsg_get_device(inode, file);
unlock_kernel();
if (IS_ERR(bd))
return PTR_ERR(bd);

11
drivers/block/DAC960.c
View File

@ -36,7 +36,7 @@
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/reboot.h>
@ -54,6 +54,7 @@
#define DAC960_GAM_MINOR 252
static DEFINE_MUTEX(DAC960_mutex);
static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
static int DAC960_ControllerCount;
static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
@ -81,7 +82,7 @@ static int DAC960_open(struct block_device *bdev, fmode_t mode)
int drive_nr = (long)disk->private_data;
int ret = -ENXIO;
lock_kernel();
mutex_lock(&DAC960_mutex);
if (p->FirmwareType == DAC960_V1_Controller) {
if (p->V1.LogicalDriveInformation[drive_nr].
LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
@ -99,7 +100,7 @@ static int DAC960_open(struct block_device *bdev, fmode_t mode)
goto out;
ret = 0;
out:
unlock_kernel();
mutex_unlock(&DAC960_mutex);
return ret;
}
@ -6625,7 +6626,7 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
long ErrorCode = 0;
if (!capable(CAP_SYS_ADMIN)) return -EACCES;
lock_kernel();
mutex_lock(&DAC960_mutex);
switch (Request)
{
case DAC960_IOCTL_GET_CONTROLLER_COUNT:
@ -7056,7 +7057,7 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
default:
ErrorCode = -ENOTTY;
}
unlock_kernel();
mutex_unlock(&DAC960_mutex);
return ErrorCode;
}

19
drivers/block/amiflop.c
View File

@ -60,7 +60,7 @@
#include <linux/hdreg.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/amifdreg.h>
#include <linux/amifd.h>
#include <linux/buffer_head.h>
@ -109,6 +109,7 @@
#define FD_HD_3 0x55555555 /* high-density 3.5" (1760K) drive */
#define FD_DD_5 0xaaaaaaaa /* double-density 5.25" (440K) drive */
static DEFINE_MUTEX(amiflop_mutex);
static unsigned long int fd_def_df0 = FD_DD_3; /* default for df0 if it doesn't identify */
module_param(fd_def_df0, ulong, 0);
@ -1506,9 +1507,9 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&amiflop_mutex);
ret = fd_locked_ioctl(bdev, mode, cmd, param);
unlock_kernel();
mutex_unlock(&amiflop_mutex);
return ret;
}
@ -1555,11 +1556,11 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
int old_dev;
unsigned long flags;
lock_kernel();
mutex_lock(&amiflop_mutex);
old_dev = fd_device[drive];
if (fd_ref[drive] && old_dev != system) {
unlock_kernel();
mutex_unlock(&amiflop_mutex);
return -EBUSY;
}
@ -1575,7 +1576,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
rel_fdc();
if (wrprot) {
unlock_kernel();
mutex_unlock(&amiflop_mutex);
return -EROFS;
}
}
@ -1594,7 +1595,7 @@ 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();
mutex_unlock(&amiflop_mutex);
return 0;
}
@ -1603,7 +1604,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
struct amiga_floppy_struct *p = disk->private_data;
int drive = p - unit;
lock_kernel();
mutex_lock(&amiflop_mutex);
if (unit[drive].dirty == 1) {
del_timer (flush_track_timer + drive);
non_int_flush_track (drive);
@ -1617,7 +1618,7 @@ 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();
mutex_unlock(&amiflop_mutex);
return 0;
}

9
drivers/block/aoe/aoeblk.c
View File

@ -12,9 +12,10 @@
#include <linux/slab.h>
#include <linux/genhd.h>
#include <linux/netdevice.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include "aoe.h"
static DEFINE_MUTEX(aoeblk_mutex);
static struct kmem_cache *buf_pool_cache;
static ssize_t aoedisk_show_state(struct device *dev,
@ -125,16 +126,16 @@ aoeblk_open(struct block_device *bdev, fmode_t mode)
struct aoedev *d = bdev->bd_disk->private_data;
ulong flags;
lock_kernel();
mutex_lock(&aoeblk_mutex);
spin_lock_irqsave(&d->lock, flags);
if (d->flags & DEVFL_UP) {
d->nopen++;
spin_unlock_irqrestore(&d->lock, flags);
unlock_kernel();
mutex_unlock(&aoeblk_mutex);
return 0;
}
spin_unlock_irqrestore(&d->lock, flags);
unlock_kernel();
mutex_unlock(&aoeblk_mutex);
return -ENODEV;
}

9
drivers/block/aoe/aoechr.c
View File

@ -9,7 +9,7 @@
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/skbuff.h>
#include "aoe.h"
@ -37,6 +37,7 @@ struct ErrMsg {
char *msg;
};
static DEFINE_MUTEX(aoechr_mutex);
static struct ErrMsg emsgs[NMSG];
static int emsgs_head_idx, emsgs_tail_idx;
static struct completion emsgs_comp;
@ -183,16 +184,16 @@ aoechr_open(struct inode *inode, struct file *filp)
{
int n, i;
lock_kernel();
mutex_lock(&aoechr_mutex);
n = iminor(inode);
filp->private_data = (void *) (unsigned long) n;
for (i = 0; i < ARRAY_SIZE(chardevs); ++i)
if (chardevs[i].minor == n) {
unlock_kernel();
mutex_unlock(&aoechr_mutex);
return 0;
}
unlock_kernel();
mutex_unlock(&aoechr_mutex);
return -EINVAL;
}

15
drivers/block/ataflop.c
View File

@ -67,7 +67,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <asm/atafd.h>
#include <asm/atafdreg.h>
@ -79,6 +79,7 @@
#undef DEBUG
static DEFINE_MUTEX(ataflop_mutex);
static struct request_queue *floppy_queue;
static struct request *fd_request;
@ -1671,9 +1672,9 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&ataflop_mutex);
ret = fd_locked_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&ataflop_mutex);
return ret;
}
@ -1854,9 +1855,9 @@ static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&ataflop_mutex);
ret = floppy_open(bdev, mode);
unlock_kernel();
mutex_unlock(&ataflop_mutex);
return ret;
}
@ -1864,14 +1865,14 @@ static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
static int floppy_release(struct gendisk *disk, fmode_t mode)
{
struct atari_floppy_struct *p = disk->private_data;
lock_kernel();
mutex_lock(&ataflop_mutex);
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();
mutex_unlock(&ataflop_mutex);
return 0;
}

7
drivers/block/brd.c
View File

@ -15,7 +15,7 @@
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/highmem.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
#include <linux/buffer_head.h> /* invalidate_bh_lrus() */
#include <linux/slab.h>
@ -55,6 +55,7 @@ struct brd_device {
/*
* Look up and return a brd's page for a given sector.
*/
static DEFINE_MUTEX(brd_mutex);
static struct page *brd_lookup_page(struct brd_device *brd, sector_t sector)
{
pgoff_t idx;
@ -402,7 +403,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
* ram device BLKFLSBUF has special semantics, we want to actually
* release and destroy the ramdisk data.
*/
lock_kernel();
mutex_lock(&brd_mutex);
mutex_lock(&bdev->bd_mutex);
error = -EBUSY;
if (bdev->bd_openers <= 1) {
@ -419,7 +420,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
error = 0;
}
mutex_unlock(&bdev->bd_mutex);
unlock_kernel();
mutex_unlock(&brd_mutex);
return error;
}

14
drivers/block/cciss.c
View File

@ -26,7 +26,6 @@
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
@ -66,6 +65,7 @@ MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
MODULE_VERSION("3.6.26");
MODULE_LICENSE("GPL");
static DEFINE_MUTEX(cciss_mutex);
static int cciss_allow_hpsa;
module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(cciss_allow_hpsa,
@ -1059,9 +1059,9 @@ static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&cciss_mutex);
ret = cciss_open(bdev, mode);
unlock_kernel();
mutex_unlock(&cciss_mutex);
return ret;
}
@ -1074,13 +1074,13 @@ static int cciss_release(struct gendisk *disk, fmode_t mode)
ctlr_info_t *h;
drive_info_struct *drv;
lock_kernel();
mutex_lock(&cciss_mutex);
h = get_host(disk);
drv = get_drv(disk);
dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name);
drv->usage_count--;
h->usage_count--;
unlock_kernel();
mutex_unlock(&cciss_mutex);
return 0;
}
@ -1088,9 +1088,9 @@ static int do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
int ret;
lock_kernel();
mutex_lock(&cciss_mutex);
ret = cciss_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&cciss_mutex);
return ret;
}

15
drivers/block/cpqarray.c
View File

@ -35,7 +35,7 @@
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/hdreg.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
@ -68,6 +68,7 @@ MODULE_LICENSE("GPL");
#define CPQARRAY_DMA_MASK 0xFFFFFFFF /* 32 bit DMA */
static DEFINE_MUTEX(cpqarray_mutex);
static int nr_ctlr;
static ctlr_info_t *hba[MAX_CTLR];
@ -845,9 +846,9 @@ static int ida_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&cpqarray_mutex);
ret = ida_open(bdev, mode);
unlock_kernel();
mutex_unlock(&cpqarray_mutex);
return ret;
}
@ -859,10 +860,10 @@ static int ida_release(struct gendisk *disk, fmode_t mode)
{
ctlr_info_t *host;
lock_kernel();
mutex_lock(&cpqarray_mutex);
host = get_host(disk);
host->usage_count--;
unlock_kernel();
mutex_unlock(&cpqarray_mutex);
return 0;
}
@ -1217,9 +1218,9 @@ static int ida_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&cpqarray_mutex);
ret = ida_locked_ioctl(bdev, mode, cmd, param);
unlock_kernel();
mutex_unlock(&cpqarray_mutex);
return ret;
}

11
drivers/block/drbd/drbd_main.c
View File

@ -32,7 +32,7 @@
#include <asm/types.h>
#include <net/sock.h>
#include <linux/ctype.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/proc_fs.h>
@ -64,6 +64,7 @@ struct after_state_chg_work {
struct completion *done;
};
static DEFINE_MUTEX(drbd_main_mutex);
int drbdd_init(struct drbd_thread *);
int drbd_worker(struct drbd_thread *);
int drbd_asender(struct drbd_thread *);
@ -2536,7 +2537,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
unsigned long flags;
int rv = 0;
lock_kernel();
mutex_lock(&drbd_main_mutex);
spin_lock_irqsave(&mdev->req_lock, flags);
/* to have a stable mdev->state.role
* and no race with updating open_cnt */
@ -2551,7 +2552,7 @@ 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();
mutex_unlock(&drbd_main_mutex);
return rv;
}
@ -2559,9 +2560,9 @@ 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();
mutex_lock(&drbd_main_mutex);
mdev->open_cnt--;
unlock_kernel();
mutex_unlock(&drbd_main_mutex);
return 0;
}

16
drivers/block/floppy.c
View File

@ -178,7 +178,6 @@ static int print_unex = 1;
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/bio.h>
#include <linux/smp_lock.h>
#include <linux/string.h>
#include <linux/jiffies.h>
#include <linux/fcntl.h>
@ -199,6 +198,7 @@ static int print_unex = 1;
* It's been recommended that take about 1/4 of the default speed
* in some more extreme cases.
*/
static DEFINE_MUTEX(floppy_mutex);
static int slow_floppy;
#include <asm/dma.h>
@ -3553,9 +3553,9 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&floppy_mutex);
ret = fd_locked_ioctl(bdev, mode, cmd, param);
unlock_kernel();
mutex_unlock(&floppy_mutex);
return ret;
}
@ -3616,7 +3616,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
{
int drive = (long)disk->private_data;
lock_kernel();
mutex_lock(&floppy_mutex);
mutex_lock(&open_lock);
if (UDRS->fd_ref < 0)
UDRS->fd_ref = 0;
@ -3627,7 +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();
mutex_unlock(&floppy_mutex);
return 0;
}
@ -3645,7 +3645,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
int res = -EBUSY;
char *tmp;
lock_kernel();
mutex_lock(&floppy_mutex);
mutex_lock(&open_lock);
old_dev = UDRS->fd_device;
if (opened_bdev[drive] && opened_bdev[drive] != bdev)
@ -3722,7 +3722,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
goto out;
}
mutex_unlock(&open_lock);
unlock_kernel();
mutex_unlock(&floppy_mutex);
return 0;
out:
if (UDRS->fd_ref < 0)
@ -3733,7 +3733,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
opened_bdev[drive] = NULL;
out2:
mutex_unlock(&open_lock);
unlock_kernel();
mutex_unlock(&floppy_mutex);
return res;
}

11
drivers/block/loop.c
View File

@ -67,7 +67,7 @@
#include <linux/compat.h>
#include <linux/suspend.h>
#include <linux/freezer.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h> /* for invalidate_bdev() */
#include <linux/completion.h>
@ -77,6 +77,7 @@
#include <asm/uaccess.h>
static DEFINE_MUTEX(loop_mutex);
static LIST_HEAD(loop_devices);
static DEFINE_MUTEX(loop_devices_mutex);
@ -1409,11 +1410,11 @@ static int lo_open(struct block_device *bdev, fmode_t mode)
{
struct loop_device *lo = bdev->bd_disk->private_data;
lock_kernel();
mutex_lock(&loop_mutex);
mutex_lock(&lo->lo_ctl_mutex);
lo->lo_refcnt++;
mutex_unlock(&lo->lo_ctl_mutex);
unlock_kernel();
mutex_unlock(&loop_mutex);
return 0;
}
@ -1423,7 +1424,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode)
struct loop_device *lo = disk->private_data;
int err;
lock_kernel();
mutex_lock(&loop_mutex);
mutex_lock(&lo->lo_ctl_mutex);
if (--lo->lo_refcnt)
@ -1448,7 +1449,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode)
out:
mutex_unlock(&lo->lo_ctl_mutex);
out_unlocked:
lock_kernel();
mutex_unlock(&loop_mutex);
return 0;
}

7
drivers/block/nbd.c
View File

@ -24,7 +24,7 @@
#include <linux/errno.h>
#include <linux/file.h>
#include <linux/ioctl.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/compiler.h>
#include <linux/err.h>
#include <linux/kernel.h>
@ -53,6 +53,7 @@
#define DBG_BLKDEV 0x0100
#define DBG_RX 0x0200
#define DBG_TX 0x0400
static DEFINE_MUTEX(nbd_mutex);
static unsigned int debugflags;
#endif /* NDEBUG */
@ -717,11 +718,11 @@ static int nbd_ioctl(struct block_device *bdev, fmode_t mode,
dprintk(DBG_IOCTL, "%s: nbd_ioctl cmd=%s(0x%x) arg=%lu\n",
lo->disk->disk_name, ioctl_cmd_to_ascii(cmd), cmd, arg);
lock_kernel();
mutex_lock(&nbd_mutex);
mutex_lock(&lo->tx_lock);
error = __nbd_ioctl(bdev, lo, cmd, arg);
mutex_unlock(&lo->tx_lock);
unlock_kernel();
mutex_unlock(&nbd_mutex);
return error;
}

15
drivers/block/paride/pcd.c
View File

@ -138,9 +138,10 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY};
#include <linux/cdrom.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
static DEFINE_MUTEX(pcd_mutex);
static DEFINE_SPINLOCK(pcd_lock);
module_param(verbose, bool, 0644);
@ -227,9 +228,9 @@ static int pcd_block_open(struct block_device *bdev, fmode_t mode)
struct pcd_unit *cd = bdev->bd_disk->private_data;
int ret;
lock_kernel();
mutex_lock(&pcd_mutex);
ret = cdrom_open(&cd->info, bdev, mode);
unlock_kernel();
mutex_unlock(&pcd_mutex);
return ret;
}
@ -237,9 +238,9 @@ static int pcd_block_open(struct block_device *bdev, fmode_t mode)
static int pcd_block_release(struct gendisk *disk, fmode_t mode)
{
struct pcd_unit *cd = disk->private_data;
lock_kernel();
mutex_lock(&pcd_mutex);
cdrom_release(&cd->info, mode);
unlock_kernel();
mutex_unlock(&pcd_mutex);
return 0;
}
@ -249,9 +250,9 @@ static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode,
struct pcd_unit *cd = bdev->bd_disk->private_data;
int ret;
lock_kernel();
mutex_lock(&pcd_mutex);
ret = cdrom_ioctl(&cd->info, bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&pcd_mutex);
return ret;
}

15
drivers/block/paride/pd.c
View File

@ -153,10 +153,11 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_GEO, D_SBY, D_DLY, D_SLV};
#include <linux/blkdev.h>
#include <linux/blkpg.h>
#include <linux/kernel.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <linux/workqueue.h>
static DEFINE_MUTEX(pd_mutex);
static DEFINE_SPINLOCK(pd_lock);
module_param(verbose, bool, 0);
@ -736,14 +737,14 @@ static int pd_open(struct block_device *bdev, fmode_t mode)
{
struct pd_unit *disk = bdev->bd_disk->private_data;
lock_kernel();
mutex_lock(&pd_mutex);
disk->access++;
if (disk->removable) {
pd_special_command(disk, pd_media_check);
pd_special_command(disk, pd_door_lock);
}
unlock_kernel();
mutex_unlock(&pd_mutex);
return 0;
}
@ -771,10 +772,10 @@ static int pd_ioctl(struct block_device *bdev, fmode_t mode,
switch (cmd) {
case CDROMEJECT:
lock_kernel();
mutex_lock(&pd_mutex);
if (disk->access == 1)
pd_special_command(disk, pd_eject);
unlock_kernel();
mutex_unlock(&pd_mutex);
return 0;
default:
return -EINVAL;
@ -785,10 +786,10 @@ static int pd_release(struct gendisk *p, fmode_t mode)
{
struct pd_unit *disk = p->private_data;
lock_kernel();
mutex_lock(&pd_mutex);
if (!--disk->access && disk->removable)
pd_special_command(disk, pd_door_unlock);
unlock_kernel();
mutex_unlock(&pd_mutex);
return 0;
}

17
drivers/block/paride/pf.c
View File

@ -152,9 +152,10 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_LUN, D_DLY};
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/blkpg.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
static DEFINE_MUTEX(pf_mutex);
static DEFINE_SPINLOCK(pf_spin_lock);
module_param(verbose, bool, 0644);
@ -302,7 +303,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode)
struct pf_unit *pf = bdev->bd_disk->private_data;
int ret;
lock_kernel();
mutex_lock(&pf_mutex);
pf_identify(pf);
ret = -ENODEV;
@ -318,7 +319,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode)
if (pf->removable)
pf_lock(pf, 1);
out:
unlock_kernel();
mutex_unlock(&pf_mutex);
return ret;
}
@ -349,9 +350,9 @@ static int pf_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, u
if (pf->access != 1)
return -EBUSY;
lock_kernel();
mutex_lock(&pf_mutex);
pf_eject(pf);
unlock_kernel();
mutex_unlock(&pf_mutex);
return 0;
}
@ -360,9 +361,9 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
{
struct pf_unit *pf = disk->private_data;
lock_kernel();
mutex_lock(&pf_mutex);
if (pf->access <= 0) {
unlock_kernel();
mutex_unlock(&pf_mutex);
return -EINVAL;
}
@ -371,7 +372,7 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
if (!pf->access && pf->removable)
pf_lock(pf, 0);
unlock_kernel();
mutex_unlock(&pf_mutex);
return 0;
}

16
drivers/block/pktcdvd.c
View File

@ -57,7 +57,6 @@
#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>
@ -86,6 +85,7 @@
#define ZONE(sector, pd) (((sector) + (pd)->offset) & ~((pd)->settings.size - 1))
static DEFINE_MUTEX(pktcdvd_mutex);
static struct pktcdvd_device *pkt_devs[MAX_WRITERS];
static struct proc_dir_entry *pkt_proc;
static int pktdev_major;
@ -2383,7 +2383,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
VPRINTK(DRIVER_NAME": entering open\n");
lock_kernel();
mutex_lock(&pktcdvd_mutex);
mutex_lock(&ctl_mutex);
pd = pkt_find_dev_from_minor(MINOR(bdev->bd_dev));
if (!pd) {
@ -2411,7 +2411,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
}
mutex_unlock(&ctl_mutex);
unlock_kernel();
mutex_unlock(&pktcdvd_mutex);
return 0;
out_dec:
@ -2419,7 +2419,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
out:
VPRINTK(DRIVER_NAME": failed open (%d)\n", ret);
mutex_unlock(&ctl_mutex);
unlock_kernel();
mutex_unlock(&pktcdvd_mutex);
return ret;
}
@ -2428,7 +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(&pktcdvd_mutex);
mutex_lock(&ctl_mutex);
pd->refcnt--;
BUG_ON(pd->refcnt < 0);
@ -2437,7 +2437,7 @@ static int pkt_close(struct gendisk *disk, fmode_t mode)
pkt_release_dev(pd, flush);
}
mutex_unlock(&ctl_mutex);
unlock_kernel();
mutex_unlock(&pktcdvd_mutex);
return ret;
}
@ -2773,7 +2773,7 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
VPRINTK("pkt_ioctl: cmd %x, dev %d:%d\n", cmd,
MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev));
lock_kernel();
mutex_lock(&pktcdvd_mutex);
switch (cmd) {
case CDROMEJECT:
/*
@ -2798,7 +2798,7 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
VPRINTK(DRIVER_NAME": Unknown ioctl for %s (%x)\n", pd->name, cmd);
ret = -ENOTTY;
}
unlock_kernel();
mutex_unlock(&pktcdvd_mutex);
return ret;
}

15
drivers/block/swim.c
View File

@ -20,7 +20,7 @@
#include <linux/fd.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/hdreg.h>
#include <linux/kernel.h>
#include <linux/delay.h>
@ -222,6 +222,7 @@ extern int swim_read_sector_header(struct swim __iomem *base,
extern int swim_read_sector_data(struct swim __iomem *base,
unsigned char *data);
static DEFINE_MUTEX(swim_mutex);
static inline void set_swim_mode(struct swim __iomem *base, int enable)
{
struct iwm __iomem *iwm_base;
@ -666,9 +667,9 @@ static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&swim_mutex);
ret = floppy_open(bdev, mode);
unlock_kernel();
mutex_unlock(&swim_mutex);
return ret;
}
@ -678,7 +679,7 @@ 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();
mutex_lock(&swim_mutex);
if (fs->ref_count < 0)
fs->ref_count = 0;
else if (fs->ref_count > 0)
@ -686,7 +687,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
if (fs->ref_count == 0)
swim_motor(base, OFF);
unlock_kernel();
mutex_unlock(&swim_mutex);
return 0;
}
@ -704,9 +705,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
case FDEJECT:
if (fs->ref_count != 1)
return -EBUSY;
lock_kernel();
mutex_lock(&swim_mutex);
err = floppy_eject(fs);
unlock_kernel();
mutex_unlock(&swim_mutex);
return err;
case FDGETPRM:

15
drivers/block/swim3.c
View File

@ -25,7 +25,7 @@
#include <linux/ioctl.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/io.h>
@ -36,6 +36,7 @@
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
static DEFINE_MUTEX(swim3_mutex);
static struct request_queue *swim3_queue;
static struct gendisk *disks[2];
static struct request *fd_req;
@ -873,9 +874,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&swim3_mutex);
ret = floppy_locked_ioctl(bdev, mode, cmd, param);
unlock_kernel();
mutex_unlock(&swim3_mutex);
return ret;
}
@ -953,9 +954,9 @@ static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&swim3_mutex);
ret = floppy_open(bdev, mode);
unlock_kernel();
mutex_unlock(&swim3_mutex);
return ret;
}
@ -964,13 +965,13 @@ 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();
mutex_lock(&swim3_mutex);
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();
mutex_unlock(&swim3_mutex);
return 0;
}

15
drivers/block/ub.c
View File

@ -28,7 +28,7 @@
#include <linux/timer.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <scsi/scsi.h>
#define DRV_NAME "ub"
@ -248,6 +248,7 @@ struct ub_completion {
spinlock_t lock;
};
static DEFINE_MUTEX(ub_mutex);
static inline void ub_init_completion(struct ub_completion *x)
{
x->done = 0;
@ -1715,9 +1716,9 @@ static int ub_bd_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&ub_mutex);
ret = ub_bd_open(bdev, mode);
unlock_kernel();
mutex_unlock(&ub_mutex);
return ret;
}
@ -1730,9 +1731,9 @@ 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();
mutex_lock(&ub_mutex);
ub_put(sc);
unlock_kernel();
mutex_unlock(&ub_mutex);
return 0;
}
@ -1747,9 +1748,9 @@ static int ub_bd_ioctl(struct block_device *bdev, fmode_t mode,
void __user *usermem = (void __user *) arg;
int ret;
lock_kernel();
mutex_lock(&ub_mutex);
ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, usermem);
unlock_kernel();
mutex_unlock(&ub_mutex);
return ret;
}

11
drivers/block/viodasd.c
View File

@ -41,7 +41,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <linux/device.h>
@ -73,6 +73,7 @@ enum {
MAX_DISK_NAME = FIELD_SIZEOF(struct gendisk, disk_name)
};
static DEFINE_MUTEX(viodasd_mutex);
static DEFINE_SPINLOCK(viodasd_spinlock);
#define VIOMAXREQ 16
@ -180,9 +181,9 @@ static int viodasd_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&viodasd_mutex);
ret = viodasd_open(bdev, mode);
unlock_kernel();
mutex_unlock(&viodasd_mutex);
return ret;
}
@ -196,7 +197,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode)
struct viodasd_device *d = disk->private_data;
HvLpEvent_Rc hvrc;
lock_kernel();
mutex_lock(&viodasd_mutex);
/* Send the event to OS/400. We DON'T expect a response */
hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
HvLpEvent_Type_VirtualIo,
@ -210,7 +211,7 @@ static int viodasd_release(struct gendisk *disk, fmode_t mode)
if (hvrc != 0)
pr_warning("HV close call failed %d\n", (int)hvrc);
unlock_kernel();
mutex_unlock(&viodasd_mutex);
return 0;
}

7
drivers/block/xd.c
View File

@ -46,7 +46,7 @@
#include <linux/init.h>
#include <linux/wait.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/blkpg.h>
#include <linux/delay.h>
#include <linux/io.h>
@ -58,6 +58,7 @@
#include "xd.h"
static DEFINE_MUTEX(xd_mutex);
static void __init do_xd_setup (int *integers);
#ifdef MODULE
static int xd[5] = { -1,-1,-1,-1, };
@ -381,9 +382,9 @@ static int xd_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&xd_mutex);
ret = xd_locked_ioctl(bdev, mode, cmd, param);
unlock_kernel();
mutex_unlock(&xd_mutex);
return ret;
}

11
drivers/block/xen-blkfront.c
View File

@ -41,7 +41,7 @@
#include <linux/cdrom.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <xen/xen.h>
@ -69,6 +69,7 @@ struct blk_shadow {
unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
};
static DEFINE_MUTEX(blkfront_mutex);
static const struct block_device_operations xlvbd_block_fops;
#define BLK_RING_SIZE __RING_SIZE((struct blkif_sring *)0, PAGE_SIZE)
@ -1201,7 +1202,7 @@ static int blkif_open(struct block_device *bdev, fmode_t mode)
struct blkfront_info *info;
int err = 0;
lock_kernel();
mutex_lock(&blkfront_mutex);
info = disk->private_data;
if (!info) {
@ -1219,7 +1220,7 @@ static int blkif_open(struct block_device *bdev, fmode_t mode)
mutex_unlock(&info->mutex);
out:
unlock_kernel();
mutex_unlock(&blkfront_mutex);
return err;
}
@ -1229,7 +1230,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)
struct block_device *bdev;
struct xenbus_device *xbdev;
lock_kernel();
mutex_lock(&blkfront_mutex);
bdev = bdget_disk(disk, 0);
bdput(bdev);
@ -1263,7 +1264,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)
}
out:
unlock_kernel();
mutex_unlock(&blkfront_mutex);
return 0;
}

11
drivers/block/xsysace.c
View File

@ -89,7 +89,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/ata.h>
#include <linux/hdreg.h>
#include <linux/platform_device.h>
@ -214,6 +214,7 @@ struct ace_device {
u16 cf_id[ATA_ID_WORDS];
};
static DEFINE_MUTEX(xsysace_mutex);
static int ace_major;
/* ---------------------------------------------------------------------
@ -903,13 +904,13 @@ 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();
mutex_lock(&xsysace_mutex);
spin_lock_irqsave(&ace->lock, flags);
ace->users++;
spin_unlock_irqrestore(&ace->lock, flags);
check_disk_change(bdev);
unlock_kernel();
mutex_unlock(&xsysace_mutex);
return 0;
}
@ -922,7 +923,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode)
dev_dbg(ace->dev, "ace_release() users=%i\n", ace->users - 1);
lock_kernel();
mutex_lock(&xsysace_mutex);
spin_lock_irqsave(&ace->lock, flags);
ace->users--;
if (ace->users == 0) {
@ -930,7 +931,7 @@ 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();
mutex_unlock(&xsysace_mutex);
return 0;
}

15
drivers/block/z2ram.c
View File

@ -33,7 +33,7 @@
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/bitops.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <asm/setup.h>
@ -57,6 +57,7 @@ extern struct mem_info m68k_memory[NUM_MEMINFO];
#define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 )
static DEFINE_MUTEX(z2ram_mutex);
static u_long *z2ram_map = NULL;
static u_long z2ram_size = 0;
static int z2_count = 0;
@ -154,7 +155,7 @@ static int z2_open(struct block_device *bdev, fmode_t mode)
device = MINOR(bdev->bd_dev);
lock_kernel();
mutex_lock(&z2ram_mutex);
if ( current_device != -1 && current_device != device )
{
rc = -EBUSY;
@ -296,25 +297,25 @@ static int z2_open(struct block_device *bdev, fmode_t mode)
set_capacity(z2ram_gendisk, z2ram_size >> 9);
}
unlock_kernel();
mutex_unlock(&z2ram_mutex);
return 0;
err_out_kfree:
kfree(z2ram_map);
err_out:
unlock_kernel();
mutex_unlock(&z2ram_mutex);
return rc;
}
static int
z2_release(struct gendisk *disk, fmode_t mode)
{
lock_kernel();
mutex_lock(&z2ram_mutex);
if ( current_device == -1 ) {
unlock_kernel();
mutex_unlock(&z2ram_mutex);
return 0;
}
unlock_kernel();
mutex_unlock(&z2ram_mutex);
/*
* FIXME: unmap memory
*/

15
drivers/cdrom/gdrom.c
View File

@ -34,7 +34,7 @@
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
@ -81,6 +81,7 @@
#define GDROM_DEFAULT_TIMEOUT (HZ * 7)
static DEFINE_MUTEX(gdrom_mutex);
static const struct {
int sense_key;
const char * const text;
@ -494,17 +495,17 @@ static struct cdrom_device_ops gdrom_ops = {
static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&gdrom_mutex);
ret = cdrom_open(gd.cd_info, bdev, mode);
unlock_kernel();
mutex_unlock(&gdrom_mutex);
return ret;
}
static int gdrom_bdops_release(struct gendisk *disk, fmode_t mode)
{
lock_kernel();
mutex_lock(&gdrom_mutex);
cdrom_release(gd.cd_info, mode);
unlock_kernel();
mutex_unlock(&gdrom_mutex);
return 0;
}
@ -518,9 +519,9 @@ static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&gdrom_mutex);
ret = cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&gdrom_mutex);
return ret;
}

15
drivers/cdrom/viocd.c
View File

@ -42,7 +42,7 @@
#include <linux/module.h>
#include <linux/completion.h>
#include <linux/proc_fs.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/seq_file.h>
#include <linux/scatterlist.h>
@ -61,6 +61,7 @@
*/
#define VIOCD_MAX_CD HVMAXARCHITECTEDVIRTUALCDROMS
static DEFINE_MUTEX(viocd_mutex);
static const struct vio_error_entry viocd_err_table[] = {
{0x0201, EINVAL, "Invalid Range"},
{0x0202, EINVAL, "Invalid Token"},
@ -156,9 +157,9 @@ static int viocd_blk_open(struct block_device *bdev, fmode_t mode)
struct disk_info *di = bdev->bd_disk->private_data;
int ret;
lock_kernel();
mutex_lock(&viocd_mutex);
ret = cdrom_open(&di->viocd_info, bdev, mode);
unlock_kernel();
mutex_unlock(&viocd_mutex);
return ret;
}
@ -166,9 +167,9 @@ static int viocd_blk_open(struct block_device *bdev, fmode_t mode)
static int viocd_blk_release(struct gendisk *disk, fmode_t mode)
{
struct disk_info *di = disk->private_data;
lock_kernel();
mutex_lock(&viocd_mutex);
cdrom_release(&di->viocd_info, mode);
unlock_kernel();
mutex_unlock(&viocd_mutex);
return 0;
}
@ -178,9 +179,9 @@ static int viocd_blk_ioctl(struct block_device *bdev, fmode_t mode,
struct disk_info *di = bdev->bd_disk->private_data;
int ret;
lock_kernel();
mutex_lock(&viocd_mutex);
ret = cdrom_ioctl(&di->viocd_info, bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&viocd_mutex);
return ret;
}

14
drivers/ide/ide-cd.c
View File

@ -31,7 +31,6 @@
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
@ -52,6 +51,7 @@
#include "ide-cd.h"
static DEFINE_MUTEX(ide_cd_mutex);
static DEFINE_MUTEX(idecd_ref_mutex);
static void ide_cd_release(struct device *);
@ -1602,7 +1602,7 @@ static int idecd_open(struct block_device *bdev, fmode_t mode)
struct cdrom_info *info;
int rc = -ENXIO;
lock_kernel();
mutex_lock(&ide_cd_mutex);
info = ide_cd_get(bdev->bd_disk);
if (!info)
goto out;
@ -1611,7 +1611,7 @@ static int idecd_open(struct block_device *bdev, fmode_t mode)
if (rc < 0)
ide_cd_put(info);
out:
unlock_kernel();
mutex_unlock(&ide_cd_mutex);
return rc;
}
@ -1619,11 +1619,11 @@ static int idecd_release(struct gendisk *disk, fmode_t mode)
{
struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
lock_kernel();
mutex_lock(&ide_cd_mutex);
cdrom_release(&info->devinfo, mode);
ide_cd_put(info);
unlock_kernel();
mutex_unlock(&ide_cd_mutex);
return 0;
}
@ -1694,9 +1694,9 @@ static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
{
int ret;
lock_kernel();
mutex_lock(&ide_cd_mutex);
ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&ide_cd_mutex);
return ret;
}

7
drivers/ide/ide-disk_ioctl.c
View File

@ -1,10 +1,11 @@
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/hdreg.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include "ide-disk.h"
static DEFINE_MUTEX(ide_disk_ioctl_mutex);
static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = {
{ HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, &ide_devset_address },
{ HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, &ide_devset_multcount },
@ -19,13 +20,13 @@ int ide_disk_ioctl(ide_drive_t *drive, struct block_device *bdev, fmode_t mode,
{
int err;
lock_kernel();
mutex_lock(&ide_disk_ioctl_mutex);
err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_disk_ioctl_settings);
if (err != -EOPNOTSUPP)
goto out;
err = generic_ide_ioctl(drive, bdev, cmd, arg);
out:
unlock_kernel();
mutex_unlock(&ide_disk_ioctl_mutex);
return err;
}

7
drivers/ide/ide-floppy_ioctl.c
View File

@ -5,7 +5,7 @@
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/cdrom.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <asm/unaligned.h>
@ -32,6 +32,7 @@
* On exit we set nformats to the number of records we've actually initialized.
*/
static DEFINE_MUTEX(ide_floppy_ioctl_mutex);
static int ide_floppy_get_format_capacities(ide_drive_t *drive,
struct ide_atapi_pc *pc,
int __user *arg)
@ -276,7 +277,7 @@ int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
void __user *argp = (void __user *)arg;
int err;
lock_kernel();
mutex_lock(&ide_floppy_ioctl_mutex);
if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) {
err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
goto out;
@ -298,6 +299,6 @@ int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
err = generic_ide_ioctl(drive, bdev, cmd, arg);
out:
unlock_kernel();
mutex_unlock(&ide_floppy_ioctl_mutex);
return err;
}

10
drivers/ide/ide-gd.c
View File

@ -1,4 +1,3 @@
#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
@ -23,6 +22,7 @@
#define IDE_GD_VERSION "1.18"
/* module parameters */
static DEFINE_MUTEX(ide_gd_mutex);
static unsigned long debug_mask;
module_param(debug_mask, ulong, 0644);
@ -242,9 +242,9 @@ static int ide_gd_unlocked_open(struct block_device *bdev, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&ide_gd_mutex);
ret = ide_gd_open(bdev, mode);
unlock_kernel();
mutex_unlock(&ide_gd_mutex);
return ret;
}
@ -257,7 +257,7 @@ static int ide_gd_release(struct gendisk *disk, fmode_t mode)
ide_debug_log(IDE_DBG_FUNC, "enter");
lock_kernel();
mutex_lock(&ide_gd_mutex);
if (idkp->openers == 1)
drive->disk_ops->flush(drive);
@ -269,7 +269,7 @@ static int ide_gd_release(struct gendisk *disk, fmode_t mode)
idkp->openers--;
ide_disk_put(idkp);
unlock_kernel();
mutex_unlock(&ide_gd_mutex);
return 0;
}

19
drivers/ide/ide-tape.c
View File

@ -32,11 +32,9 @@
#include <linux/errno.h>
#include <linux/genhd.h>
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/smp_lock.h>
#include <linux/completion.h>
#include <linux/bitops.h>
#include <linux/mutex.h>
@ -220,6 +218,7 @@ typedef struct ide_tape_obj {
char write_prot;
} idetape_tape_t;
static DEFINE_MUTEX(ide_tape_mutex);
static DEFINE_MUTEX(idetape_ref_mutex);
static DEFINE_MUTEX(idetape_chrdev_mutex);
@ -1426,9 +1425,9 @@ static long idetape_chrdev_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
long ret;
lock_kernel();
mutex_lock(&ide_tape_mutex);
ret = do_idetape_chrdev_ioctl(file, cmd, arg);
unlock_kernel();
mutex_unlock(&ide_tape_mutex);
return ret;
}
@ -1909,9 +1908,9 @@ static int idetape_open(struct block_device *bdev, fmode_t mode)
{
struct ide_tape_obj *tape;
lock_kernel();
mutex_lock(&ide_tape_mutex);
tape = ide_tape_get(bdev->bd_disk, false, 0);
unlock_kernel();
mutex_unlock(&ide_tape_mutex);
if (!tape)
return -ENXIO;
@ -1923,9 +1922,9 @@ static int idetape_release(struct gendisk *disk, fmode_t mode)
{
struct ide_tape_obj *tape = ide_drv_g(disk, ide_tape_obj);
lock_kernel();
mutex_lock(&ide_tape_mutex);
ide_tape_put(tape);
unlock_kernel();
mutex_unlock(&ide_tape_mutex);
return 0;
}
@ -1937,11 +1936,11 @@ static int idetape_ioctl(struct block_device *bdev, fmode_t mode,
ide_drive_t *drive = tape->drive;
int err;
lock_kernel();
mutex_lock(&ide_tape_mutex);
err = generic_ide_ioctl(drive, bdev, cmd, arg);
if (err == -EINVAL)
err = idetape_blkdev_ioctl(drive, cmd, arg);
unlock_kernel();
mutex_unlock(&ide_tape_mutex);
return err;
}

10
drivers/md/dm.c
View File

@ -15,7 +15,6 @@
#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>
@ -33,6 +32,7 @@
#define DM_COOKIE_ENV_VAR_NAME "DM_COOKIE"
#define DM_COOKIE_LENGTH 24
static DEFINE_MUTEX(dm_mutex);
static const char *_name = DM_NAME;
static unsigned int major = 0;
@ -344,7 +344,7 @@ static int dm_blk_open(struct block_device *bdev, fmode_t mode)
{
struct mapped_device *md;
lock_kernel();
mutex_lock(&dm_mutex);
spin_lock(&_minor_lock);
md = bdev->bd_disk->private_data;
@ -362,7 +362,7 @@ static int dm_blk_open(struct block_device *bdev, fmode_t mode)
out:
spin_unlock(&_minor_lock);
unlock_kernel();
mutex_unlock(&dm_mutex);
return md ? 0 : -ENXIO;
}
@ -371,10 +371,10 @@ static int dm_blk_close(struct gendisk *disk, fmode_t mode)
{
struct mapped_device *md = disk->private_data;
lock_kernel();
mutex_lock(&dm_mutex);
atomic_dec(&md->open_count);
dm_put(md);
unlock_kernel();
mutex_unlock(&dm_mutex);
return 0;
}

13
drivers/md/md.c
View File

@ -36,7 +36,7 @@
#include <linux/blkdev.h>
#include <linux/sysctl.h>
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/buffer_head.h> /* for invalidate_bdev */
#include <linux/poll.h>
#include <linux/ctype.h>
@ -57,6 +57,7 @@
#define DEBUG 0
#define dprintk(x...) ((void)(DEBUG && printk(x)))
static DEFINE_MUTEX(md_mutex);
#ifndef MODULE
static void autostart_arrays(int part);
@ -5949,7 +5950,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
mddev_t *mddev = mddev_find(bdev->bd_dev);
int err;
lock_kernel();
mutex_lock(&md_mutex);
if (mddev->gendisk != bdev->bd_disk) {
/* we are racing with mddev_put which is discarding this
* bd_disk.
@ -5958,7 +5959,7 @@ 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();
mutex_unlock(&md_mutex);
return -ERESTARTSYS;
}
BUG_ON(mddev != bdev->bd_disk->private_data);
@ -5972,7 +5973,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
check_disk_size_change(mddev->gendisk, bdev);
out:
unlock_kernel();
mutex_unlock(&md_mutex);
return err;
}
@ -5981,10 +5982,10 @@ static int md_release(struct gendisk *disk, fmode_t mode)
mddev_t *mddev = disk->private_data;
BUG_ON(!mddev);
lock_kernel();
mutex_lock(&md_mutex);
atomic_dec(&mddev->openers);
mddev_put(mddev);
unlock_kernel();
mutex_unlock(&md_mutex);
return 0;
}

11
drivers/memstick/core/mspro_block.c
View File

@ -18,11 +18,12 @@
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/memstick.h>
#define DRIVER_NAME "mspro_block"
static DEFINE_MUTEX(mspro_block_mutex);
static int major;
module_param(major, int, 0644);
@ -180,7 +181,7 @@ 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_mutex);
mutex_lock(&mspro_block_disk_lock);
if (msb && msb->card) {
@ -192,7 +193,7 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
}
mutex_unlock(&mspro_block_disk_lock);
unlock_kernel();
mutex_unlock(&mspro_block_mutex);
return rc;
}
@ -225,9 +226,9 @@ static int mspro_block_disk_release(struct gendisk *disk)
static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
{
int ret;
lock_kernel();
mutex_lock(&mspro_block_mutex);
ret = mspro_block_disk_release(disk);
unlock_kernel();
mutex_unlock(&mspro_block_mutex);
return ret;
}

15
drivers/message/i2o/i2o_block.c
View File

@ -53,7 +53,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2o.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/mempool.h>
@ -69,6 +69,7 @@
#define OSM_VERSION "1.325"
#define OSM_DESCRIPTION "I2O Block Device OSM"
static DEFINE_MUTEX(i2o_block_mutex);
static struct i2o_driver i2o_block_driver;
/* global Block OSM request mempool */
@ -578,7 +579,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
if (!dev->i2o_dev)
return -ENODEV;
lock_kernel();
mutex_lock(&i2o_block_mutex);
if (dev->power > 0x1f)
i2o_block_device_power(dev, 0x02);
@ -587,7 +588,7 @@ 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();
mutex_unlock(&i2o_block_mutex);
return 0;
};
@ -618,7 +619,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode)
if (!dev->i2o_dev)
return 0;
lock_kernel();
mutex_lock(&i2o_block_mutex);
i2o_block_device_flush(dev->i2o_dev);
i2o_block_device_unlock(dev->i2o_dev, -1);
@ -629,7 +630,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode)
operation = 0x24;
i2o_block_device_power(dev, operation);
unlock_kernel();
mutex_unlock(&i2o_block_mutex);
return 0;
}
@ -664,7 +665,7 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
lock_kernel();
mutex_lock(&i2o_block_mutex);
switch (cmd) {
case BLKI2OGRSTRAT:
ret = put_user(dev->rcache, (int __user *)arg);
@ -688,7 +689,7 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode,
ret = 0;
break;
}
unlock_kernel();
mutex_unlock(&i2o_block_mutex);
return ret;
};

10
drivers/mmc/card/block.c
View File

@ -29,7 +29,6 @@
#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>
@ -51,6 +50,7 @@ MODULE_ALIAS("mmc:block");
#define MMC_SHIFT 3
#define MMC_NUM_MINORS (256 >> MMC_SHIFT)
static DEFINE_MUTEX(block_mutex);
static DECLARE_BITMAP(dev_use, MMC_NUM_MINORS);
/*
@ -108,7 +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();
mutex_lock(&block_mutex);
if (md) {
if (md->usage == 2)
check_disk_change(bdev);
@ -119,7 +119,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
ret = -EROFS;
}
}
unlock_kernel();
mutex_unlock(&block_mutex);
return ret;
}
@ -128,9 +128,9 @@ static int mmc_blk_release(struct gendisk *disk, fmode_t mode)
{
struct mmc_blk_data *md = disk->private_data;
lock_kernel();
mutex_lock(&block_mutex);
mmc_blk_put(md);
unlock_kernel();
mutex_unlock(&block_mutex);
return 0;
}

14
drivers/mtd/mtd_blkdevs.c
View File

@ -29,7 +29,6 @@
#include <linux/blkdev.h>
#include <linux/blkpg.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/mutex.h>
@ -38,6 +37,7 @@
#include "mtdcore.h"
static DEFINE_MUTEX(mtd_blkdevs_mutex);
static LIST_HEAD(blktrans_majors);
static DEFINE_MUTEX(blktrans_ref_mutex);
@ -181,7 +181,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
if (!dev)
return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
lock_kernel();
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (!dev->mtd) {
@ -198,7 +198,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
unlock_kernel();
mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@ -210,7 +210,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!dev)
return ret;
lock_kernel();
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
/* Release one reference, we sure its not the last one here*/
@ -223,7 +223,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
unlock_kernel();
mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@ -256,7 +256,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
if (!dev)
return ret;
lock_kernel();
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (!dev->mtd)
@ -271,7 +271,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
}
unlock:
mutex_unlock(&dev->lock);
unlock_kernel();
mutex_unlock(&mtd_blkdevs_mutex);
blktrans_dev_put(dev);
return ret;
}

13
drivers/s390/char/tape_block.c
View File

@ -16,7 +16,7 @@
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/buffer_head.h>
#include <linux/kernel.h>
@ -45,6 +45,7 @@
/*
* file operation structure for tape block frontend
*/
static DEFINE_MUTEX(tape_block_mutex);
static int tapeblock_open(struct block_device *, fmode_t);
static int tapeblock_release(struct gendisk *, fmode_t);
static int tapeblock_medium_changed(struct gendisk *);
@ -361,7 +362,7 @@ tapeblock_open(struct block_device *bdev, fmode_t mode)
struct tape_device * device;
int rc;
lock_kernel();
mutex_lock(&tape_block_mutex);
device = tape_get_device(disk->private_data);
if (device->required_tapemarks) {
@ -385,14 +386,14 @@ tapeblock_open(struct block_device *bdev, fmode_t mode)
* is called.
*/
tape_state_set(device, TS_BLKUSE);
unlock_kernel();
mutex_unlock(&tape_block_mutex);
return 0;
release:
tape_release(device);
put_device:
tape_put_device(device);
unlock_kernel();
mutex_unlock(&tape_block_mutex);
return rc;
}
@ -407,11 +408,11 @@ tapeblock_release(struct gendisk *disk, fmode_t mode)
{
struct tape_device *device = disk->private_data;
lock_kernel();
mutex_lock(&tape_block_mutex);
tape_state_set(device, TS_IN_USE);
tape_release(device);
tape_put_device(device);
unlock_kernel();
mutex_unlock(&tape_block_mutex);
return 0;
}

14
drivers/scsi/sr.c
View File

@ -44,7 +44,6 @@
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
@ -76,6 +75,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_WORM);
CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_DVD_RAM|CDC_GENERIC_PACKET| \
CDC_MRW|CDC_MRW_W|CDC_RAM)
static DEFINE_MUTEX(sr_mutex);
static int sr_probe(struct device *);
static int sr_remove(struct device *);
static int sr_done(struct scsi_cmnd *);
@ -470,24 +470,24 @@ static int sr_block_open(struct block_device *bdev, fmode_t mode)
struct scsi_cd *cd;
int ret = -ENXIO;
lock_kernel();
mutex_lock(&sr_mutex);
cd = scsi_cd_get(bdev->bd_disk);
if (cd) {
ret = cdrom_open(&cd->cdi, bdev, mode);
if (ret)
scsi_cd_put(cd);
}
unlock_kernel();
mutex_unlock(&sr_mutex);
return ret;
}
static int sr_block_release(struct gendisk *disk, fmode_t mode)
{
struct scsi_cd *cd = scsi_cd(disk);
lock_kernel();
mutex_lock(&sr_mutex);
cdrom_release(&cd->cdi, mode);
scsi_cd_put(cd);
unlock_kernel();
mutex_unlock(&sr_mutex);
return 0;
}
@ -499,7 +499,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
void __user *argp = (void __user *)arg;
int ret;
lock_kernel();
mutex_lock(&sr_mutex);
/*
* Send SCSI addressing ioctls directly to mid level, send other
@ -529,7 +529,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
ret = scsi_ioctl(sdev, cmd, argp);
out:
unlock_kernel();
mutex_unlock(&sr_mutex);
return ret;
}

12
drivers/scsi/st.c
View File

@ -39,7 +39,6 @@ static const char *verstr = "20081215";
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/dma.h>
@ -76,6 +75,7 @@ static const char *verstr = "20081215";
#include "st_options.h"
#include "st.h"
static DEFINE_MUTEX(st_mutex);
static int buffer_kbs;
static int max_sg_segs;
static int try_direct_io = TRY_DIRECT_IO;
@ -1180,7 +1180,7 @@ static int st_open(struct inode *inode, struct file *filp)
int dev = TAPE_NR(inode);
char *name;
lock_kernel();
mutex_lock(&st_mutex);
/*
* We really want to do nonseekable_open(inode, filp); here, but some
* versions of tar incorrectly call lseek on tapes and bail out if that
@ -1189,7 +1189,7 @@ static int st_open(struct inode *inode, struct file *filp)
filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE);
if (!(STp = scsi_tape_get(dev))) {
unlock_kernel();
mutex_unlock(&st_mutex);
return -ENXIO;
}
@ -1200,7 +1200,7 @@ static int st_open(struct inode *inode, struct file *filp)
if (STp->in_use) {
write_unlock(&st_dev_arr_lock);
scsi_tape_put(STp);
unlock_kernel();
mutex_unlock(&st_mutex);
DEB( printk(ST_DEB_MSG "%s: Device already in use.\n", name); )
return (-EBUSY);
}
@ -1249,14 +1249,14 @@ static int st_open(struct inode *inode, struct file *filp)
retval = (-EIO);
goto err_out;
}
unlock_kernel();
mutex_unlock(&st_mutex);
return 0;
err_out:
normalize_buffer(STp->buffer);
STp->in_use = 0;
scsi_tape_put(STp);
unlock_kernel();
mutex_unlock(&st_mutex);
return retval;
}

11
drivers/staging/hv/blkvsc_drv.c
View File

@ -25,7 +25,7 @@
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@ -124,6 +124,7 @@ struct blkvsc_driver_context {
};
/* Static decl */
static DEFINE_MUTEX(blkvsc_mutex);
static int blkvsc_probe(struct device *dev);
static int blkvsc_remove(struct device *device);
static void blkvsc_shutdown(struct device *device);
@ -1309,7 +1310,7 @@ 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();
mutex_lock(&blkvsc_mutex);
spin_lock(&blkdev->lock);
if (!blkdev->users && blkdev->device_type == DVD_TYPE) {
@ -1321,7 +1322,7 @@ static int blkvsc_open(struct block_device *bdev, fmode_t mode)
blkdev->users++;
spin_unlock(&blkdev->lock);
unlock_kernel();
mutex_unlock(&blkvsc_mutex);
return 0;
}
@ -1332,7 +1333,7 @@ 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();
mutex_lock(&blkvsc_mutex);
spin_lock(&blkdev->lock);
if (blkdev->users == 1) {
spin_unlock(&blkdev->lock);
@ -1343,7 +1344,7 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
blkdev->users--;
spin_unlock(&blkdev->lock);
unlock_kernel();
mutex_unlock(&blkvsc_mutex);
return 0;
}

7
drivers/staging/spectra/ffsport.c
View File

@ -27,7 +27,6 @@
#include <linux/kthread.h>
#include <linux/log2.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
/**** Helper functions used for Div, Remainder operation on u64 ****/
@ -590,14 +589,16 @@ int GLOB_SBD_ioctl(struct block_device *bdev, fmode_t mode,
return -ENOTTY;
}
static DEFINE_MUTEX(ffsport_mutex);
int GLOB_SBD_unlocked_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
int ret;
lock_kernel();
mutex_lock(&ffsport_mutex);
ret = GLOB_SBD_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
mutex_unlock(&ffsport_mutex);
return ret;
}