UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ide-tape: remove the BKL 

Replace the BKL calls in the chrdev_{open,release} interfaces with a
simple sleeping mutex.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Borislav Petkov 2009-10-11 00:25:19 +00:00 committed by David S. Miller
parent 3f911a6e6b
commit cbba2fa7b2
1 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/ide/ide-tape.c
View File

@ -221,6 +221,8 @@ typedef struct ide_tape_obj {
static DEFINE_MUTEX(idetape_ref_mutex);
static DEFINE_MUTEX(idetape_chrdev_mutex);
static struct class *idetape_sysfs_class;
static void ide_tape_release(struct device *);
@ -1457,10 +1459,11 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)
if (i >= MAX_HWIFS * MAX_DRIVES)
return -ENXIO;
lock_kernel();
mutex_lock(&idetape_chrdev_mutex);
tape = ide_tape_get(NULL, true, i);
if (!tape) {
unlock_kernel();
mutex_unlock(&idetape_chrdev_mutex);
return -ENXIO;
}
@ -1519,12 +1522,15 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)
tape->door_locked = DOOR_LOCKED;
}
}
unlock_kernel();
mutex_unlock(&idetape_chrdev_mutex);
return 0;
out_put_tape:
ide_tape_put(tape);
unlock_kernel();
mutex_unlock(&idetape_chrdev_mutex);
return retval;
}
@ -1551,7 +1557,8 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp)
ide_drive_t *drive = tape->drive;
unsigned int minor = iminor(inode);
lock_kernel();
mutex_lock(&idetape_chrdev_mutex);
tape = drive->driver_data;
ide_debug_log(IDE_DBG_FUNC, "enter");
@ -1575,7 +1582,9 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp)
}
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags);
ide_tape_put(tape);
unlock_kernel();
mutex_unlock(&idetape_chrdev_mutex);
return 0;
}