diff options
Diffstat (limited to 'fs')
-rw-r--r-- | fs/block_dev.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index d707ab376da8..962fabe8a67b 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -894,10 +894,14 @@ static struct block_device *bdget(dev_t dev) /** * bdgrab -- Grab a reference to an already referenced block device * @bdev: Block device to grab a reference to. + * + * Returns the block_device with an additional reference when successful, + * or NULL if the inode is already beeing freed. */ struct block_device *bdgrab(struct block_device *bdev) { - ihold(bdev->bd_inode); + if (!igrab(bdev->bd_inode)) + return NULL; return bdev; } EXPORT_SYMBOL(bdgrab); |