diff options
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f6c8e8e4e8e..973b6f6ff35 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -788,6 +788,9 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) return NULL; } + if (!try_module_get(THIS_MODULE)) + goto bad0; + /* get a minor number for the dev */ r = persistent ? specific_minor(md, minor) : next_free_minor(md, &minor); if (r < 0) @@ -848,6 +851,8 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) blk_put_queue(md->queue); free_minor(minor); bad1: + module_put(THIS_MODULE); + bad0: kfree(md); return NULL; } @@ -866,6 +871,7 @@ static void free_dev(struct mapped_device *md) free_minor(minor); put_disk(md->disk); blk_put_queue(md->queue); + module_put(THIS_MODULE); kfree(md); } |