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SUNRPC: Add lockless lookup of the server's auth domain

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Avoid taking the global auth_domain_lock in most lookups of the auth domain
by adding an RCU protected lookup.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust
2018-10-01 10:41:44 -04:00
committed by J. Bruce Fields
parent 30382d6ce5
commit 608a0ab2f5
4 changed files with 36 additions and 6 deletions
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9
net/sunrpc/auth_gss/svcauth_gss.c
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@@ -1764,14 +1764,21 @@ out_err:
}
static void
svcauth_gss_domain_release(struct auth_domain *dom)
svcauth_gss_domain_release_rcu(struct rcu_head *head)
{
struct auth_domain *dom = container_of(head, struct auth_domain, rcu_head);
struct gss_domain *gd = container_of(dom, struct gss_domain, h);
kfree(dom->name);
kfree(gd);
}
static void
svcauth_gss_domain_release(struct auth_domain *dom)
{
call_rcu(&dom->rcu_head, svcauth_gss_domain_release_rcu);
}
static struct auth_ops svcauthops_gss = {
.name = "rpcsec_gss",
.owner = THIS_MODULE,