On Mon, Aug 21, 2017 at 10:02:20AM +0200, Jan Kara wrote: > On Sun 20-08-17 19:54:37, Wang Shilong wrote: > > From: Wang Shilong <wshilong@xxxxxxx> > > > > While running number of creating file threads concurrently, > > we found heavy lock contention on group spinlock: Thanks, applied. Many thanks for all of your work!! - Ted