From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH v3 17/17] SUNRPC: use new hashtable implementation in auth Date: Wed, 22 Aug 2012 04:27:12 +0200 Message-ID: <1345602432-27673-18-git-send-email-levinsasha928@gmail.com> References: <1345602432-27673-1-git-send-email-levinsasha928@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, neilb-l3A5Bk7waGM@public.gmane.org, fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org, bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org, paul.gortmaker-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org, dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, agk-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, aarcange-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, rds-devel-N0ozoZBvEnrZJqsBc5GL+g@public.gmane.org, eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, venkat.x.venkatsubra-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, ccaulfie-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, mingo-X9Un+BFzKDI@public.gmane.org, dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org, ericvh-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org, rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org, lw-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org, mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org, Sasha Levin , axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org, linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ejt-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, teigland-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org To: torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org Return-path: In-Reply-To: <1345602432-27673-1-git-send-email-levinsasha928-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org Errors-To: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org List-Id: netdev.vger.kernel.org Switch sunrpc/auth.c to use the new hashtable implementation. This reduces the amount of generic unrelated code in auth.c. Signed-off-by: Sasha Levin --- net/sunrpc/auth.c | 45 +++++++++++++++++++-------------------------- 1 files changed, 19 insertions(+), 26 deletions(-) diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index b5c067b..5d50e2d 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -15,6 +15,7 @@ #include #include #include +#include #ifdef RPC_DEBUG # define RPCDBG_FACILITY RPCDBG_AUTH @@ -222,7 +223,7 @@ static DEFINE_SPINLOCK(rpc_credcache_lock); static void rpcauth_unhash_cred_locked(struct rpc_cred *cred) { - hlist_del_rcu(&cred->cr_hash); + hash_del_rcu(&cred->cr_hash); smp_mb__before_clear_bit(); clear_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags); } @@ -249,16 +250,15 @@ int rpcauth_init_credcache(struct rpc_auth *auth) { struct rpc_cred_cache *new; - unsigned int hashsize; new = kmalloc(sizeof(*new), GFP_KERNEL); if (!new) goto out_nocache; new->hashbits = auth_hashbits; - hashsize = 1U << new->hashbits; - new->hashtable = kcalloc(hashsize, sizeof(new->hashtable[0]), GFP_KERNEL); + new->hashtable = kmalloc(HASH_REQUIRED_SIZE(new->hashbits), GFP_KERNEL); if (!new->hashtable) goto out_nohashtbl; + hash_init_size(new->hashtable, new->hashbits); spin_lock_init(&new->lock); auth->au_credcache = new; return 0; @@ -292,25 +292,20 @@ void rpcauth_clear_credcache(struct rpc_cred_cache *cache) { LIST_HEAD(free); - struct hlist_head *head; + struct hlist_node *n, *t; struct rpc_cred *cred; - unsigned int hashsize = 1U << cache->hashbits; - int i; + int i; spin_lock(&rpc_credcache_lock); spin_lock(&cache->lock); - for (i = 0; i < hashsize; i++) { - head = &cache->hashtable[i]; - while (!hlist_empty(head)) { - cred = hlist_entry(head->first, struct rpc_cred, cr_hash); - get_rpccred(cred); - if (!list_empty(&cred->cr_lru)) { - list_del(&cred->cr_lru); - number_cred_unused--; - } - list_add_tail(&cred->cr_lru, &free); - rpcauth_unhash_cred_locked(cred); + hash_for_each_safe_size(cache->hashtable, cache->hashbits, i, n, t, cred, cr_hash) { + get_rpccred(cred); + if (!list_empty(&cred->cr_lru)) { + list_del(&cred->cr_lru); + number_cred_unused--; } + list_add_tail(&cred->cr_lru, &free); + rpcauth_unhash_cred_locked(cred); } spin_unlock(&cache->lock); spin_unlock(&rpc_credcache_lock); @@ -408,14 +403,11 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred, LIST_HEAD(free); struct rpc_cred_cache *cache = auth->au_credcache; struct hlist_node *pos; - struct rpc_cred *cred = NULL, - *entry, *new; - unsigned int nr; - - nr = hash_long(acred->uid, cache->hashbits); + struct rpc_cred *cred = NULL, *entry = NULL, *new; rcu_read_lock(); - hlist_for_each_entry_rcu(entry, pos, &cache->hashtable[nr], cr_hash) { + hash_for_each_possible_rcu_size(cache->hashtable, cred, cache->hashbits, + pos, cr_hash, acred->uid) { if (!entry->cr_ops->crmatch(acred, entry, flags)) continue; spin_lock(&cache->lock); @@ -439,7 +431,8 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred, } spin_lock(&cache->lock); - hlist_for_each_entry(entry, pos, &cache->hashtable[nr], cr_hash) { + hash_for_each_possible_size(cache->hashtable, entry, cache->hashbits, pos, + cr_hash, acred->uid) { if (!entry->cr_ops->crmatch(acred, entry, flags)) continue; cred = get_rpccred(entry); @@ -448,7 +441,7 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred, if (cred == NULL) { cred = new; set_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags); - hlist_add_head_rcu(&cred->cr_hash, &cache->hashtable[nr]); + hash_add_size(cache->hashtable, cache->hashbits, &cred->cr_hash, acred->uid); } else list_add_tail(&new->cr_lru, &free); spin_unlock(&cache->lock); -- 1.7.8.6