| commit | 059af497c23492cb1ddcbba11c09dad385960bc0 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@kernel.dk> | Thu Sep 21 20:37:22 2006 +0200 |
| committer | Jens Axboe <axboe@nelson.home.kernel.dk> | Sat Sep 30 20:52:34 2006 +0200 |
| tree | 656bbfa7104e065f0da8eac0c14b62ba1c088214 | |
| parent | 0fe23479577124bd2687e6783e39fa0fa4c28005 [diff] |
[PATCH] blk_queue_start_tag() shared map race fix If we share the tag map between two or more queues, then we cannot use __set_bit() to set the bit. In fact we need to make sure we atomically acquire this tag, so loop using test_and_set_bit() to protect from that. Noticed by Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Jens Axboe <axboe@kernel.dk>