Thanks for the pointer.
For non-zero order allocations, the test against __GFP_FAIL is a little
too soon; it would be better after we've tried to reclaim pages from the
inactive-clean list. Any nasty side effects to this?
Plus, the code still prevents PF_MEMALLOC processes from using the
inactive-clean list for non-zero order allocations. As the trend seems to
be to make zero and non-zero allocations 'equivalent', shouldn't this
restriction to lifted?
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