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Fix lock handling in memory hander of nscd.
The commit 20e498b removes the pthread_mutex_rdlock() calls, but not the corresponding pthread_mutex_unlock() calls. Also, the database lock is never unlocked in one branch of the mempool_alloc() if. I think unreproducible random assert(dh->usable) crashes in prune_cache() were caused by this. But an easy way to make nscd threads hang with the broken locking was.
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Petr Baudis
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Ulrich Drepper
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Jul 16, 2009
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