On 1/9/23 16:16, Mel Gorman wrote: > Currently __GFP_NOFAIL allocations without any other flags can access 25% > of the reserves but these requests imply that the system cannot make forward > progress until the allocation succeeds. Allow __GFP_NOFAIL access to 75% > of the min reserve. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> > --- > mm/page_alloc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 6f41b84a97ac..d2df78f5baa2 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -5308,7 +5308,7 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, > * could deplete whole memory reserves which would just make > * the situation worse > */ > - page = __alloc_pages_cpuset_fallback(gfp_mask, order, ALLOC_HARDER, ac); > + page = __alloc_pages_cpuset_fallback(gfp_mask, order, ALLOC_MIN_RESERVE|ALLOC_HARDER, ac); > if (page) > goto got_pg; >
