block: make blkdev_get/put() handle exclusive access

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 66b7f2c5d7e9f1f4f04ffa5ae018c50d22d14a07..1a033e8ebe4ced448857787163dffdf5fb91a027 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2006,7 +2006,8 @@ extern struct block_device *bdgrab(struct block_device *bdev);
 extern void bd_set_size(struct block_device *, loff_t size);
 extern void bd_forget(struct inode *inode);
 extern void bdput(struct block_device *);
-extern struct block_device *open_by_devnum(dev_t, fmode_t);
+extern struct block_device *open_by_devnum(dev_t dev, fmode_t mode,
+                                          void *holder);
 extern void invalidate_bdev(struct block_device *);
 extern int sync_blockdev(struct block_device *bdev);
 extern struct super_block *freeze_bdev(struct block_device *);
@@ -2037,22 +2038,16 @@ extern const struct file_operations def_fifo_fops;
 extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long);
 extern int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long);
 extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
-extern int blkdev_get(struct block_device *, fmode_t);
-extern int blkdev_put(struct block_device *, fmode_t);
-extern int bd_claim(struct block_device *, void *);
-extern void bd_release(struct block_device *);
+extern int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder);
+extern int blkdev_put(struct block_device *bdev, fmode_t mode);
 #ifdef CONFIG_SYSFS
 extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
-extern void bd_unlink_disk_holder(struct block_device *bdev);
 #else
 static inline int bd_link_disk_holder(struct block_device *bdev,
                                      struct gendisk *disk)
 {
        return 0;
 }
-static inline void bd_unlink_disk_holder(struct block_device *bdev)
-{
-}
 #endif
 #endif
 
@@ -2089,7 +2084,6 @@ extern const char *__bdevname(dev_t, char *buffer);
 extern const char *bdevname(struct block_device *bdev, char *buffer);
 extern struct block_device *lookup_bdev(const char *);
 extern struct block_device *open_bdev_exclusive(const char *, fmode_t, void *);
-extern void close_bdev_exclusive(struct block_device *, fmode_t);
 extern void blkdev_show(struct seq_file *,off_t);
 
 #else