On Fri, Nov 06, 2020 at 10:00:22AM -0700, Logan Gunthorpe wrote: > In order to call this function from a dma_map function, it must not sleep. > The only reason it does sleep so to allocate the seqbuf to print > which devices are within the ACS path. > > Switch the kmalloc call to use GFP_NOWAIT and simply not print that > message if the buffer fails to be allocated.
Please pass in the actual gfp_t. Especially from an I/O path GFP_NOWAIT is not the right gfp_t anyway, you probably want GFP_ATOMIC there. But also for the path where we can sleep we should allow that.
