diff options
| author | Jun'ichi Nomura <j-nomura@ce.jp.nec.com> | 2006-02-24 13:04:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-24 14:31:39 -0800 |
| commit | 63d94e482df769f31e8b1097f06c3a3fba7bced4 (patch) | |
| tree | 0461197daa1d7df50087b4dfa2b692dfcd81d745 | |
| parent | d9dde59ba03095e526640988c0fedd75e93bc8b7 (diff) | |
[PATCH] dm: free minor after unlink gendisk
Minor number should be freed after del_gendisk(). Otherwise, there could
be a window where 2 registered gendisk has same minor number.
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/md/dm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index dad9e403d59..745ca1f67b1 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -849,14 +849,16 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) static void free_dev(struct mapped_device *md) { + unsigned int minor = md->disk->first_minor; + if (md->suspended_bdev) { thaw_bdev(md->suspended_bdev, NULL); bdput(md->suspended_bdev); } - free_minor(md->disk->first_minor); mempool_destroy(md->tio_pool); mempool_destroy(md->io_pool); del_gendisk(md->disk); + free_minor(minor); put_disk(md->disk); blk_put_queue(md->queue); kfree(md); |