| commit | 4657fb8a98a4e02981a574492bbe470c147b6657 | [log] [tgz] |
|---|---|---|
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | Fri May 30 10:03:33 2008 +0200 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Fri May 30 10:03:36 2008 +0200 |
| tree | 9363e9452ce5b798cad43b83b0276bda6a7568c9 | |
| parent | 54ad64129cc166b9eec7151f3f9fc83589e33555 [diff] |
[S390] tape: fix race with stack local wait_queue_head_t. A wait_event call with a stack local wait_queue_head_t structure that is used to do the wake up for the wait_event is inherently racy. After the wait_event finished the wake_up call might not have completed yet. Replace the stack local wait_queue_head_t in tape_do_io and tape_do_io_interruptible with a per device wait queue. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>