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authorTejun Heo <tj@kernel.org>2013-02-27 17:03:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-27 19:10:14 -0800
commitce23bba842aee98092225d9576dba47c82352521 (patch)
tree5642d356f830bc3987f65f6879249cf96bf24df2 /block/bsg.c
parentd5c7409f79e14db49d00785692334657592c07ff (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 'block/bsg.c')
0 files changed, 0 insertions, 0 deletions