Kent Overstreet writes:
> On Thu, Apr 15, 2021 at 09:42:56PM -0700, Paul E. McKenney wrote:
>> On Tue, Apr 13, 2021 at 10:47:03AM +0800, Huang Ying wrote:
>> > One typical use case of percpu_ref_tryget() family functions is as
>> > follows,
>> >
>> > if (percpu_ref_tryget(>ref)) {
>> >
On Thu, Apr 15, 2021 at 09:42:56PM -0700, Paul E. McKenney wrote:
> On Tue, Apr 13, 2021 at 10:47:03AM +0800, Huang Ying wrote:
> > One typical use case of percpu_ref_tryget() family functions is as
> > follows,
> >
> > if (percpu_ref_tryget(>ref)) {
> > /* Operate on the other fields of
On Tue, Apr 13, 2021 at 10:47:03AM +0800, Huang Ying wrote:
> One typical use case of percpu_ref_tryget() family functions is as
> follows,
>
> if (percpu_ref_tryget(>ref)) {
> /* Operate on the other fields of *p */
> }
>
> The refcount needs to be checked before operating on the
One typical use case of percpu_ref_tryget() family functions is as
follows,
if (percpu_ref_tryget(>ref)) {
/* Operate on the other fields of *p */
}
The refcount needs to be checked before operating on the other fields
of the data structure (*p), otherwise, the values gotten from
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