new helper: ihold()
Clones an existing reference to inode; caller must already hold one.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index b737451..81972eb 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -550,7 +550,7 @@
*/
struct block_device *bdgrab(struct block_device *bdev)
{
- atomic_inc(&bdev->bd_inode->i_count);
+ ihold(bdev->bd_inode);
return bdev;
}
@@ -580,7 +580,7 @@
spin_lock(&bdev_lock);
bdev = inode->i_bdev;
if (bdev) {
- atomic_inc(&bdev->bd_inode->i_count);
+ ihold(bdev->bd_inode);
spin_unlock(&bdev_lock);
return bdev;
}
@@ -591,12 +591,12 @@
spin_lock(&bdev_lock);
if (!inode->i_bdev) {
/*
- * We take an additional bd_inode->i_count for inode,
+ * We take an additional reference to bd_inode,
* and it's released in clear_inode() of inode.
* So, we can access it via ->i_mapping always
* without igrab().
*/
- atomic_inc(&bdev->bd_inode->i_count);
+ ihold(bdev->bd_inode);
inode->i_bdev = bdev;
inode->i_mapping = bdev->bd_inode->i_mapping;
list_add(&inode->i_devices, &bdev->bd_inodes);