mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 16:53:54 +08:00
block: pre-initialize struct block_device in bdev_alloc_inode
bdev_evict_inode and bdev_free_inode are also called for the root inode
of bdevfs, for which bdev_alloc is never called. Move the zeroing o
f struct block_device and the initialization of the bd_bdi field into
bdev_alloc_inode to make sure they are initialized for the root inode
as well.
Fixes: e6cb53827e
("block: initialize struct block_device in bdev_alloc")
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
04b1ecb6a4
commit
2d2f6f1b47
@ -776,8 +776,11 @@ static struct kmem_cache * bdev_cachep __read_mostly;
|
||||
static struct inode *bdev_alloc_inode(struct super_block *sb)
|
||||
{
|
||||
struct bdev_inode *ei = kmem_cache_alloc(bdev_cachep, GFP_KERNEL);
|
||||
|
||||
if (!ei)
|
||||
return NULL;
|
||||
memset(&ei->bdev, 0, sizeof(ei->bdev));
|
||||
ei->bdev.bd_bdi = &noop_backing_dev_info;
|
||||
return &ei->vfs_inode;
|
||||
}
|
||||
|
||||
@ -871,14 +874,12 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno)
|
||||
mapping_set_gfp_mask(&inode->i_data, GFP_USER);
|
||||
|
||||
bdev = I_BDEV(inode);
|
||||
memset(bdev, 0, sizeof(*bdev));
|
||||
mutex_init(&bdev->bd_mutex);
|
||||
mutex_init(&bdev->bd_fsfreeze_mutex);
|
||||
spin_lock_init(&bdev->bd_size_lock);
|
||||
bdev->bd_disk = disk;
|
||||
bdev->bd_partno = partno;
|
||||
bdev->bd_inode = inode;
|
||||
bdev->bd_bdi = &noop_backing_dev_info;
|
||||
#ifdef CONFIG_SYSFS
|
||||
INIT_LIST_HEAD(&bdev->bd_holder_disks);
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user