another thing: i have added real 'lock allocation debugging'
(CONFIG_DEBUG_LOCK_ALLOC) to the kernel, which covers spinlocks,
rwlocks, mutexes and rw-semaphores. It does the following:
This feature will check whether any held lock (spinlock, rwlock,
mutex or rwsem) is incorrectly freed by the kernel, via any of the
memory-freeing routines (kfree(), kmem_cache_free(), free_pages(),
vfree(), etc.), whether a live lock is incorrectly reinitialized via
spin_lock_init()/mutex_init()/etc., or whether there is any lock
held during task exit.
so i suspect:
fs/xfs/xfs_mount.h:#define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
fs/xfs/linux-2.6/spin.h:#define spinlock_destroy(lock)
needs to change and we need to implement spinlock_destroy(), a'ka
mutex_destroy()? [which i added recently too]
Ingo
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