On 4/18/23 04:41, Pankaj Raghav wrote: > > This is not correct. You need to use radix_tree_maybe_preload because > GFP_NOWAIT should not block and this WARN_ON_ONCE flag will trigger in > radix_tree_preload: > > /* Warn on non-sensical use... */ > WARN_ON_ONCE(!gfpflags_allow_blocking(gfp_mask)); > > I also verified this locally with your patch and while doing a simple fio > write with setting memory_backed=1. > > plz share the exact fio job you have used to generate this error, I need add that to the patch testlog. -ck
