On 4/22/20 2:14 AM, Michel Lespinasse wrote: > This change wraps the existing mmap_sem related rwsem calls into a new > mmap locking API. There are two justifications for the new API: > > - At first, it provides an easy hooking point to instrument mmap_sem > locking latencies independently of any other rwsems. > > - In the future, it may be a starting point for replacing the rwsem > implementation with a different one, such as range locks. > > Signed-off-by: Michel Lespinasse <walken@xxxxxxxxxx> > Reviewed-by: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx> > Reviewed-by: Davidlohr Bueso <dbueso@xxxxxxx> Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
