Messages in this thread | | | Date | Mon, 7 Apr 2014 10:13:36 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH -mm 2/3] lockdep: mark rwsem_acquire_read as recursive |
| |
On Sun, Apr 06, 2014 at 07:33:51PM +0400, Vladimir Davydov wrote: > rw_semaphore implementation allows recursing calls to down_read, but > lockdep thinks that it doesn't. As a result, it will complain > false-positively, e.g. if we do not observe some predefined locking > order when taking an rw semaphore for reading and a mutex. > > This patch makes lockdep think rw semaphore is read-recursive, just like > rw spin lock.
Uhm no rwsem isn't read recursive.
| |