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[ Upstream commit 62210a26cd4f8ad52683a71c0226dfe85de1144d ] Use slab allocator for allocating the memory for objects used frequently and are of fixed size. This reduces the overheard associated with kmalloc(). Suggested-by: Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20231018122812.47261-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Stable-dep-of: 327ec5f70609 ("PCI: epf-mhi: Fix the DMA data direction of dma_unmap_single()") Signed-off-by: Sasha Levin <sashal@kernel.org>