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| /freebsd-11-stable/sys/kern/ | ||
| H A D | vfs_cache.c | diff 187839 Wed Jan 28 17:10:54 MST 2009 jhb Convert the global mutex protecting the directory lookup name cache from a mutex to a reader/writer lock. Lookup operations first grab a read lock and perform the lookup. If the operation results in a need to modify the cache, then it tries to do an upgrade. If that fails, it drops the read lock, obtains a write lock, and redoes the lookup. |
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