diff options
| author | Alasdair G Kergon <agk@redhat.com> | 2011-08-02 13:32:01 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2011-08-02 13:32:01 +0200 |
| commit | d15b774c2920d55e3d58275c97fbe3adc3afde38 (patch) | |
| tree | 4801d4e5a70f1e8e57475e6ea2f8e1238b6bbc75 /drivers | |
| parent | dm io: flush cpu cache with vmapped io (diff) | |
| download | linux-d15b774c2920d55e3d58275c97fbe3adc3afde38.tar.xz linux-d15b774c2920d55e3d58275c97fbe3adc3afde38.zip | |
dm: fix idr leak on module removal
Destroy _minor_idr when unloading the core dm module. (Found by kmemleak.)
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 0cf68b478878..41abc6dd481b 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -37,6 +37,8 @@ static const char *_name = DM_NAME; static unsigned int major = 0; static unsigned int _major = 0; +static DEFINE_IDR(_minor_idr); + static DEFINE_SPINLOCK(_minor_lock); /* * For bio-based dm. @@ -313,6 +315,12 @@ static void __exit dm_exit(void) while (i--) _exits[i](); + + /* + * Should be empty by this point. + */ + idr_remove_all(&_minor_idr); + idr_destroy(&_minor_idr); } /* @@ -1705,8 +1713,6 @@ static int dm_any_congested(void *congested_data, int bdi_bits) /*----------------------------------------------------------------- * An IDR is used to keep track of allocated minor numbers. *---------------------------------------------------------------*/ -static DEFINE_IDR(_minor_idr); - static void free_minor(int minor) { spin_lock(&_minor_lock); |