On Thu, May 23, 2019 at 02:32:09PM +0200, Oliver Neukum wrote: > > Please switch to use memalloc_noio_save() instead. > > Thinking about this again, we have a problem. We introduced > memalloc_noio_save() in 3.10 . Hence the code should have been > correct in v4.14. Which means that either > 6518202970c1 "(mm/cma: remove unsupported gfp_mask > parameter from cma_alloc()" > is buggy, or the original issue with a delay of 2 seconds > still exist. > > Do we need to do something? cma_alloc calls into alloc_contig_range to do the actual allocation, which then calls current_gfp_context() to pick up the adjustments from memalloc_noio_save and friends. So at least in current mainline we should be fine.
