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knfsd: rename sk_defer_lock to sk_lock

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Now that sk_defer_lock protects two different things, make the name more
generic.

Also don't bother with disabling _bh as the lock is only ever taken from
process context.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
NeilBrown 2007-05-09 02:34:48 -07:00 committed by Linus Torvalds
parent f34b95689d
commit 7ac1bea550
3 changed files with 14 additions and 12 deletions
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3
include/linux/sunrpc/svcsock.h
View file

@ -37,7 +37,8 @@ struct svc_sock {
atomic_t sk_reserved; /* space on outq that is reserved */
spinlock_t sk_defer_lock; /* protects sk_deferred */
spinlock_t sk_lock; /* protects sk_deferred and
* sk_info_authunix */
struct list_head sk_deferred; /* deferred requests that need to
* be revisted */
struct mutex sk_mutex; /* to serialize sending data */

10
net/sunrpc/svcauth_unix.c
View file

@ -385,7 +385,7 @@ ip_map_cached_get(struct svc_rqst *rqstp)
{
struct ip_map *ipm;
struct svc_sock *svsk = rqstp->rq_sock;
spin_lock_bh(&svsk->sk_defer_lock);
spin_lock(&svsk->sk_lock);
ipm = svsk->sk_info_authunix;
if (ipm != NULL) {
if (!cache_valid(&ipm->h)) {
@ -395,13 +395,13 @@ ip_map_cached_get(struct svc_rqst *rqstp)
* same IP address.
*/
svsk->sk_info_authunix = NULL;
spin_unlock_bh(&svsk->sk_defer_lock);
spin_unlock(&svsk->sk_lock);
cache_put(&ipm->h, &ip_map_cache);
return NULL;
}
cache_get(&ipm->h);
}
spin_unlock_bh(&svsk->sk_defer_lock);
spin_unlock(&svsk->sk_lock);
return ipm;
}
@ -410,14 +410,14 @@ ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm)
{
struct svc_sock *svsk = rqstp->rq_sock;
spin_lock_bh(&svsk->sk_defer_lock);
spin_lock(&svsk->sk_lock);
if (svsk->sk_sock->type == SOCK_STREAM &&
svsk->sk_info_authunix == NULL) {
/* newly cached, keep the reference */
svsk->sk_info_authunix = ipm;
ipm = NULL;
}
spin_unlock_bh(&svsk->sk_defer_lock);
spin_unlock(&svsk->sk_lock);
if (ipm)
cache_put(&ipm->h, &ip_map_cache);
}

13
net/sunrpc/svcsock.c
View file

@ -53,7 +53,8 @@
* svc_serv->sv_lock protects sv_tempsocks, sv_permsocks, sv_tmpcnt.
* when both need to be taken (rare), svc_serv->sv_lock is first.
* BKL protects svc_serv->sv_nrthread.
* svc_sock->sk_defer_lock protects the svc_sock->sk_deferred list
* svc_sock->sk_lock protects the svc_sock->sk_deferred list
* and the ->sk_info_authunix cache.
* svc_sock->sk_flags.SK_BUSY prevents a svc_sock being enqueued multiply.
*
* Some flags can be set to certain values at any time
@ -1633,7 +1634,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
svsk->sk_server = serv;
atomic_set(&svsk->sk_inuse, 1);
svsk->sk_lastrecv = get_seconds();
spin_lock_init(&svsk->sk_defer_lock);
spin_lock_init(&svsk->sk_lock);
INIT_LIST_HEAD(&svsk->sk_deferred);
INIT_LIST_HEAD(&svsk->sk_ready);
mutex_init(&svsk->sk_mutex);
@ -1857,9 +1858,9 @@ static void svc_revisit(struct cache_deferred_req *dreq, int too_many)
dprintk("revisit queued\n");
svsk = dr->svsk;
dr->svsk = NULL;
spin_lock_bh(&svsk->sk_defer_lock);
spin_lock(&svsk->sk_lock);
list_add(&dr->handle.recent, &svsk->sk_deferred);
spin_unlock_bh(&svsk->sk_defer_lock);
spin_unlock(&svsk->sk_lock);
set_bit(SK_DEFERRED, &svsk->sk_flags);
svc_sock_enqueue(svsk);
svc_sock_put(svsk);
@ -1925,7 +1926,7 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_sock *svsk)
if (!test_bit(SK_DEFERRED, &svsk->sk_flags))
return NULL;
spin_lock_bh(&svsk->sk_defer_lock);
spin_lock(&svsk->sk_lock);
clear_bit(SK_DEFERRED, &svsk->sk_flags);
if (!list_empty(&svsk->sk_deferred)) {
dr = list_entry(svsk->sk_deferred.next,
@ -1934,6 +1935,6 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_sock *svsk)
list_del_init(&dr->handle.recent);
set_bit(SK_DEFERRED, &svsk->sk_flags);
}
spin_unlock_bh(&svsk->sk_defer_lock);
spin_unlock(&svsk->sk_lock);
return dr;
}