On Wed, Nov 24, 2021 at 03:08:49AM +0000, cgel.zte@xxxxxxxxx wrote: > From: chiminghao <chi.minghao@xxxxxxxxxx> > > Fix the following coccinelle report: > ./mm/memory_hotplug.c:2210:2-5: > WARNING Use BUG_ON instead of if condition followed by BUG. What coccinelle script is reporting this? > - if (try_remove_memory(start, size)) > - BUG(); > + BUG_ON(try_remove_memory(start, size)); I really, really, really do not like this. For functions with side-effects, this is bad style. If it's a pure predicate, then sure, but this is bad.