diff options
| author | Tejun Heo <tj@kernel.org> | 2013-02-27 17:03:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:14 -0800 |
| commit | ce23bba842aee98092225d9576dba47c82352521 (patch) | |
| tree | 5642d356f830bc3987f65f6879249cf96bf24df2 /drivers/block | |
| parent | d5c7409f79e14db49d00785692334657592c07ff (diff) | |
block: fix synchronization and limit check in blk_alloc_devt()
idr allocation in blk_alloc_devt() wasn't synchronized against lookup
and removal, and its limit check was off by one - 1 << MINORBITS is
the number of minors allowed, not the maximum allowed minor.
Add locking and rename MAX_EXT_DEVT to NR_EXT_DEVT and fix limit
checking.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jens Axboe <axboe@kernel.dk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions