dlm: use kref_put_lock in put_rsb
This patch will optimize put_rsb() by using kref_put_lock(). The function kref_put_lock() will only take the lock if the reference is going to be zero, if not the lock will never be held. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>
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0ccc106052
Коммит
9502a7f688
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@ -350,10 +350,12 @@ static void put_rsb(struct dlm_rsb *r)
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{
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{
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struct dlm_ls *ls = r->res_ls;
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struct dlm_ls *ls = r->res_ls;
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uint32_t bucket = r->res_bucket;
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uint32_t bucket = r->res_bucket;
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int rv;
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spin_lock(&ls->ls_rsbtbl[bucket].lock);
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rv = kref_put_lock(&r->res_ref, toss_rsb,
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kref_put(&r->res_ref, toss_rsb);
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&ls->ls_rsbtbl[bucket].lock);
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spin_unlock(&ls->ls_rsbtbl[bucket].lock);
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if (rv)
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spin_unlock(&ls->ls_rsbtbl[bucket].lock);
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}
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}
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void dlm_put_rsb(struct dlm_rsb *r)
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void dlm_put_rsb(struct dlm_rsb *r)
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