On Sun, 7 Feb 2021, Xiaofei Tan wrote: > Replace spin_lock_irqsave with spin_lock in hard IRQ of SCSI drivers. > There are no function changes, but may speed up if interrupt happen too > often. This change doesn't necessarily work on platforms that support nested interrupts. Were you able to measure any benefit from this change on some other platform? Please see also, https://lore.kernel.org/linux-scsi/89c5cb05cb844939ae684db0077f675f@xxxxxxx/
