diff options
| author | Tejun Heo <tj@kernel.org> | 2013-02-27 17:03:56 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-04 06:03:35 +0800 |
| commit | ca4e7610b166ff557a5f357bac6f12ec66a1ac1a (patch) | |
| tree | 9375191b66927a7e0a2d4dc23886d8f8044e7b0e /kernel/sysctl_binary.c | |
| parent | bf9493433113145c9aa9a622d0c9dcc7b51c5d83 (diff) | |
block: fix synchronization and limit check in blk_alloc_devt()
commit ce23bba842aee98092225d9576dba47c82352521 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions