On 11/28, NeilBrown wrote: > > I have evidence from a customer site of 256 nfsd threads adding files to > delayed_fput_lists nearly twice as fast they are retired by a single > work-queue thread running delayed_fput(). As you might imagine this > does not end well (20 million files in the queue at the time a snapshot > was taken for analysis). On a related note... Neil, Al, et al, can you look at [PATCH 1/3] fput: don't abuse task_work_add() when possible https://lore.kernel.org/all/20150908171446.GA14589@xxxxxxxxxx/ (please ignore 3/3). Oleg.
