On 08/08, Oleg Nesterov wrote: > > On 07/31, Andrii Nakryiko wrote: > > > > static DEFINE_RWLOCK(uprobes_treelock); /* serialize rbtree access */ > > +static seqcount_rwlock_t uprobes_seqcount = > > SEQCNT_RWLOCK_ZERO(uprobes_seqcount, &uprobes_treelock); > > Just noticed... Why seqcount_rwlock_t? > > find_uprobe_rcu() doesn't use read_seqbegin_or_lock(), > seqcount_t should work just fine.
Please ignore... I forgot that seqcount_t is not CONFIG_PREEMPT_RT-friendly. Hmm. __seqprop_preemptible() returns 0, this doesn't look right... Nevermend. Oleg.
