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d5090484b0
When allocating a new pool at runtime, reduce the number of slabs so that the allocation order is at most MAX_ORDER. This avoids a kernel warning in __alloc_pages(). The warning is relatively benign, because the pool size is subsequently reduced when allocation fails, but it is silly to start with a request that is known to fail, especially since this is the default behavior if the kernel is built with CONFIG_SWIOTLB_DYNAMIC=y and booted without any swiotlb= parameter. Reported-by: Ben Greear <greearb@candelatech.com> Closes: https://lore.kernel.org/netdev/4f173dd2-324a-0240-ff8d-abf5c191be18@candelatech.com/ Fixes: 1aaa736815eb ("swiotlb: allocate a new memory pool when existing pools are full") Signed-off-by: Petr Tesarik <petr.tesarik1@huawei-partners.com> Signed-off-by: Christoph Hellwig <hch@lst.de>