swiotlb: Don't DoS us with 'swiotlb buffer is full' (v2)

There is no need for that so lets use ratelimiting. Also add some extra information to be helpful.

Konrad Rzeszutek Wilk committed 12 years ago

Commit 0cb637b1 parent 91fec0f1 file · +2 −1Browse files

Unified · Split

@@ -505,7 +505,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, · 504 unmodified lines
505		505
506	not_found:	506	not_found:
507	spin_unlock_irqrestore(&io_tlb_lock, flags);	507	spin_unlock_irqrestore(&io_tlb_lock, flags);
508	dev_warn(hwdev, "swiotlb buffer is full\n");	508	if (printk_ratelimit())
		509	dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
509	return SWIOTLB_MAP_ERROR;	510	return SWIOTLB_MAP_ERROR;
510	found:	511	found:
511	spin_unlock_irqrestore(&io_tlb_lock, flags);	512	spin_unlock_irqrestore(&io_tlb_lock, flags);