diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 987225bdd661c33cffa0674e3fae7245a6b85a1f..b37dc0f78d077834a8839f92ca0ad93f4f49c971 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -895,6 +895,7 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order, if (((p->flags & PF_MEMALLOC) || unlikely(test_thread_flag(TIF_MEMDIE))) && !in_interrupt()) { if (!(gfp_mask & __GFP_NOMEMALLOC)) { +nofail_alloc: /* go through the zonelist yet again, ignoring mins */ for (i = 0; (z = zones[i]) != NULL; i++) { if (!cpuset_zone_allowed(z, gfp_mask)) @@ -903,6 +904,10 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order, if (page) goto got_pg; } + if (gfp_mask & __GFP_NOFAIL) { + blk_congestion_wait(WRITE, HZ/50); + goto nofail_alloc; + } } goto nopage; }