On Fri, Jul 17, 2020 at 6:48 AM Eric Biggers <ebiggers@xxxxxxxxxx> wrote: > > From: Eric Biggers <ebiggers@xxxxxxxxxx> ... > This is motivated by the discussion at > https://lkml.kernel.org/linux-fsdevel/20200713033330.205104-1-ebiggers@xxxxxxxxxx/T/#u ... > +In where cases where taking the mutex in the "already initialized" case "In cases where..." (drop first "where") > +presents scalability concerns, the implementation can be optimized to > +check the 'inited' flag outside the mutex. Unfortunately, this > +optimization is often implemented incorrectly by using a plain load. > +That violates the memory model and may result in unpredictable behavior. - Sedat -
