Messages in this thread | | | Date | Tue, 25 Oct 2011 23:24:02 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [PATCH] mm: avoid livelock on !__GFP_FS allocations |
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On Tue, 25 Oct 2011, Colin Cross wrote:
> > Or, rather, when pm_restrict_gfp_mask() clears __GFP_IO and __GFP_FS that > > it also has the same behavior as __GFP_NORETRY in should_alloc_retry() by > > setting a variable in file scope. > > > > Why do you prefer that over adding a gfp_required_mask? >
Because it avoids an unnecessary OR in the page and slab allocator fastpaths which are red hot :)
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