block: use bd{grab,put}() instead of open-coding
- bd_acquire() and bd_forget() open-code bdgrab() and bdput()
- raw driver uses igrab() but never checks its return value and always
holds another ref from bind_set() while calling it, so it's
equivalent to bdgrab()
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index aa1a4598..8b02c90 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -696,7 +696,7 @@
spin_lock(&bdev_lock);
bdev = inode->i_bdev;
if (bdev) {
- ihold(bdev->bd_inode);
+ bdgrab(bdev);
spin_unlock(&bdev_lock);
return bdev;
}
@@ -712,7 +712,7 @@
* So, we can access it via ->i_mapping always
* without igrab().
*/
- ihold(bdev->bd_inode);
+ bdgrab(bdev);
inode->i_bdev = bdev;
inode->i_mapping = bdev->bd_inode->i_mapping;
list_add(&inode->i_devices, &bdev->bd_inodes);
@@ -735,7 +735,7 @@
spin_unlock(&bdev_lock);
if (bdev)
- iput(bdev->bd_inode);
+ bdput(bdev);
}
/**