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| author | Jan Kara <jack@suse.cz> | 2018-02-26 13:01:39 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-02-26 09:48:42 -0700 |
| commit | 9df6c29912315186fef1c79cc15b758ace84175b (patch) | |
| tree | f750cc3053a805b3e2d7b0caac7acd281a64b94a /fs | |
| parent | 3079c22ea815775837a4f389ce2f7e1e7b202e09 (diff) | |
| download | linux-stable-9df6c29912315186fef1c79cc15b758ace84175b.tar.gz linux-stable-9df6c29912315186fef1c79cc15b758ace84175b.tar.bz2 linux-stable-9df6c29912315186fef1c79cc15b758ace84175b.zip | |
genhd: Add helper put_disk_and_module()
Add a proper counterpart to get_disk_and_module() -
put_disk_and_module(). Currently it is opencoded in several places.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/block_dev.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 4a181fcb5175..1dbbf847911a 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1111,8 +1111,7 @@ static struct block_device *bd_start_claiming(struct block_device *bdev, else whole = bdgrab(bdev); - module_put(disk->fops->owner); - put_disk(disk); + put_disk_and_module(disk); if (!whole) return ERR_PTR(-ENOMEM); @@ -1407,7 +1406,6 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part); static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) { struct gendisk *disk; - struct module *owner; int ret; int partno; int perm = 0; @@ -1433,7 +1431,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) disk = get_gendisk(bdev->bd_dev, &partno); if (!disk) goto out; - owner = disk->fops->owner; disk_block_events(disk); mutex_lock_nested(&bdev->bd_mutex, for_part); @@ -1463,8 +1460,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) bdev->bd_queue = NULL; mutex_unlock(&bdev->bd_mutex); disk_unblock_events(disk); - put_disk(disk); - module_put(owner); + put_disk_and_module(disk); goto restart; } } @@ -1525,8 +1521,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) goto out_unlock_bdev; } /* only one opener holds refs to the module and disk */ - put_disk(disk); - module_put(owner); + put_disk_and_module(disk); } bdev->bd_openers++; if (for_part) @@ -1546,8 +1541,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) out_unlock_bdev: mutex_unlock(&bdev->bd_mutex); disk_unblock_events(disk); - put_disk(disk); - module_put(owner); + put_disk_and_module(disk); out: bdput(bdev); @@ -1770,8 +1764,6 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part) disk->fops->release(disk, mode); } if (!bdev->bd_openers) { - struct module *owner = disk->fops->owner; - disk_put_part(bdev->bd_part); bdev->bd_part = NULL; bdev->bd_disk = NULL; @@ -1779,8 +1771,7 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part) victim = bdev->bd_contains; bdev->bd_contains = NULL; - put_disk(disk); - module_put(owner); + put_disk_and_module(disk); } mutex_unlock(&bdev->bd_mutex); bdput(bdev); |