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371260
2014 Feb 12
6
[PATCH net 1/3] kref: add kref_sub_return
On Wed, Feb 12, 2014 at 06:38:21PM +0200, Michael S. Tsirkin wrote:
> It is sometimes useful to get the value of the reference count after
> decrement.
> For example, vhost wants to execute some periodic cleanup operations
> once number of references drops below a specific value, before it
> reaches zero (for efficiency).
You should never care about what the value of the kref is,