[ovs-dev] [PATCH v2 1/3] lib/seq: Document acquire-release semantics.

Ben Pfaff blp at nicira.com
Fri Aug 29 21:31:03 UTC 2014


On Fri, Aug 29, 2014 at 02:10:42PM -0700, Jarno Rajahalme wrote:
> Seq objects would be really hard to use if they did not provide
> acquire-release semantics.  Currently they do that via
> ovs_mutex_lock()/ovs_mutex_unlock(), respectively.  Document the
> behavior so that it is safer to rely on that elsewhere.
> 
> Signed-off-by: Jarno Rajahalme <jrajahalme at nicira.com>

Only one thread calls seq_change() but every thread calls seq_read(),
so I'd expect that it's seq_read that really does the synchronization
here.  Anyway, with that one quibble I'm happy with this, thanks.

Acked-by: Ben Pfaff <blp at nicira.com>



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