__GFP_WRITE
gfp |= __GFP_WRITE;
if (!(gfp & __GFP_WRITE) && shadow)
ac->spread_dirty_pages = (gfp_mask & __GFP_WRITE);
gfp_mask &= ~(GFP_ZONEMASK | __GFP_RECLAIMABLE | __GFP_WRITE |