> + if (gfp_flag & __GFP_ZERO) > + memset(ret, 0, size); > return ret; > err: > spin_unlock_irqrestore(&mem->spinlock, flags); @@ -172,6 +173,7 > @@ static void *__dma_alloc_from_coherent(struct dma_coherent_mem > *mem, > * @dma_handle: This will be filled with ...
ac_classzone_idx(ac),alloc_flags)) gototry_this_zone; continue; } } try_this_zone:// 满足上面的条件了,开始分配 // 从当前区域分配页 page=rmqueue(ac->preferred_zoneref->zone,zone,order, gfp_mask,alloc_flags,ac->migratetype); if(page){ // 分配成功,初始化页 prep_new_page(page,orde...
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