kmem_cache_free(bdev_cachep, bdi);
}
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
{
struct bdev_inode *ei = (struct bdev_inode *) foo;
struct block_device *bdev = &ei->bdev;
struct gendisk *disk;
int ret;
int part;
+ int perm = 0;
- ret = devcgroup_inode_permission(bdev->bd_inode, file->f_mode);
- if (ret != 0)
+ if (file->f_mode & FMODE_READ)
+ perm |= MAY_READ;
+ if (file->f_mode & FMODE_WRITE)
+ perm |= MAY_WRITE;
+ /*
+ * hooks: /n/, see "layering violations".
+ */
+ ret = devcgroup_inode_permission(bdev->bd_inode, perm);
+ if (ret != 0) {
+ bdput(bdev);
return ret;
+ }
ret = -ENXIO;
file->f_mapping = bdev->bd_inode->i_mapping;
bdev = ERR_PTR(error);
goto out;
}
+EXPORT_SYMBOL(lookup_bdev);
/**
* open_bdev_excl - open a block device by name and set it up for use