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| author | Jens Axboe <jens.axboe@oracle.com> | 2008-04-29 21:31:27 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 21:36:54 +0200 |
| commit | 7663c1e2792a9662b23dec6e19bfcd3d55360b8f (patch) | |
| tree | ff5f91fa9ac3603f242b8ae985d9cca611e3d56b | |
| parent | drivers/net/tehuti: use proper capability check for raw IO access (diff) | |
| download | linux-7663c1e2792a9662b23dec6e19bfcd3d55360b8f.tar.xz linux-7663c1e2792a9662b23dec6e19bfcd3d55360b8f.zip | |
Improve queue_is_locked()
spin_is_locked() doesn't work on UP without spinlock debugging. Make it
safer and just return 1 on UP, so we don't get false positives. The plan
is to kill this debug function during the -rc cycle.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/blkdev.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 95864b3ff298..d2a1b71e93c3 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -412,8 +412,12 @@ struct request_queue static inline int queue_is_locked(struct request_queue *q) { +#ifdef CONFIG_SMP spinlock_t *lock = q->queue_lock; return lock && spin_is_locked(lock); +#else + return 1; +#endif } static inline void queue_flag_set_unlocked(unsigned int flag, |