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Commit 0cb637bf authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk
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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.

Acked-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
[v2: s/ld/zs on the printk]
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 91fec0f5
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+2 −1
Original line number Original line Diff line number Diff line
@@ -505,7 +505,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,


not_found:
not_found:
	spin_unlock_irqrestore(&io_tlb_lock, flags);
	spin_unlock_irqrestore(&io_tlb_lock, flags);
	dev_warn(hwdev, "swiotlb buffer is full\n");
	if (printk_ratelimit())
		dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
	return SWIOTLB_MAP_ERROR;
	return SWIOTLB_MAP_ERROR;
found:
found:
	spin_unlock_irqrestore(&io_tlb_lock, flags);
	spin_unlock_irqrestore(&io_tlb_lock, flags);