Enable RCU protected lookups of the NFSv4 idmap.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4idmap.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index a5bb76593ce7..bf137fec33ff 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -65,6 +65,7 @@ struct ent {
u32 id;
char name[IDMAP_NAMESZ];
char authname[IDMAP_NAMESZ];
+ struct rcu_head rcu_head;
};
/* Common entry handling */
@@ -89,7 +90,7 @@ static void
ent_put(struct kref *ref)
{
struct ent *map = container_of(ref, struct ent, h.ref);
- kfree(map);
+ kfree_rcu(map, rcu_head);
}
static struct cache_head *
@@ -264,8 +265,8 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
static struct ent *
idtoname_lookup(struct cache_detail *cd, struct ent *item)
{
- struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
- idtoname_hash(item));
+ struct cache_head *ch = sunrpc_cache_lookup_rcu(cd, &item->h,
+ idtoname_hash(item));
if (ch)
return container_of(ch, struct ent, h);
else
@@ -422,8 +423,8 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
static struct ent *
nametoid_lookup(struct cache_detail *cd, struct ent *item)
{
- struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
- nametoid_hash(item));
+ struct cache_head *ch = sunrpc_cache_lookup_rcu(cd, &item->h,
+ nametoid_hash(item));
if (ch)
return container_of(ch, struct ent, h);
else
--
2.17.1
