On Wed, Oct 16, 2024 at 12:35:59PM +0800, lizhe.67@xxxxxxxxxxxxx wrote: > From: Li Zhe <lizhe.67@xxxxxxxxxxxxx> > > Introduce a new rwsem interface upgrade_read(). We can call it It's obviously a try_upgrade_read, right? > +extern int upgrade_read(struct rw_semaphore *sem); No need for the extern. Also please make any new advanced funtionality like this an EXPORT_SYMBO_GPL. That is if you actually had a modular user, the current one is built-in. (although we could use this in XFS if it lands).
