On Wed, Jan 18, 2017 at 03:07:32AM -0800, Paul E. McKenney wrote: > A group of Linux kernel hackers reported chasing a bug that resulted > from their assumption that SLAB_DESTROY_BY_RCU provided an existence > guarantee, that is, that no block from such a slab would be reallocated > during an RCU read-side critical section. Of course, that is not the > case. Instead, SLAB_DESTROY_BY_RCU only prevents freeing of an entire > slab of blocks. > > However, there is a phrase for this, namely "type safety". This commit > therefore renames SLAB_DESTROY_BY_RCU to SLAB_TYPESAFE_BY_RCU in order > to avoid future instances of this sort of confusion. > > Signed-off-by: Paul E. McKenney <[email protected]>
This has come up in the past, and it always proved hard to agree on a better name for it. But I like SLAB_TYPESAFE_BY_RCU the best out of all proposals, and it's much more poignant than the current name. Acked-by: Johannes Weiner <[email protected]>
