Single directory performance is a critical in some use cases. For
example the multiple application threads might create hundreds of
thousands of files in a single directory simultaneously within a short
window of time.
Currently, both filename lookup and file system modifying operations
(such as create and unlink) are protected with a single lock for the
entire directory. It might be useful to remove this lock, so multiple
application threads can access the directory simultaneously.
Thanks
WangDi
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