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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 10:43:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 10:43:34 -0800
commit37c24b37fb2454e95136139d10bb6828967105bf (patch)
treed5c3fa61fa689567caeb2a7cb5891473e444ff7d /net/sunrpc
parent5ac4d630eb87656bd4dc313b910776d54d88ea28 (diff)
parent7663dacd926584093dfc350892792054692b6cb3 (diff)
Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.33' of git://linux-nfs.org/~bfields/linux: (42 commits) nfsd: remove pointless paths in file headers nfsd: move most of nfsfh.h to fs/nfsd nfsd: remove unused field rq_reffh nfsd: enable V4ROOT exports nfsd: make V4ROOT exports read-only nfsd: restrict filehandles accepted in V4ROOT case nfsd: allow exports of symlinks nfsd: filter readdir results in V4ROOT case nfsd: filter lookup results in V4ROOT case nfsd4: don't continue "under" mounts in V4ROOT case nfsd: introduce export flag for v4 pseudoroot nfsd: let "insecure" flag vary by pseudoflavor nfsd: new interface to advertise export features nfsd: Move private headers to source directory vfs: nfsctl.c un-used nfsd #includes lockd: Remove un-used nfsd headers #includes s390: remove un-used nfsd #includes sparc: remove un-used nfsd #includes parsic: remove un-used nfsd #includes compat.c: Remove dependence on nfsd private headers ...
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/svc_xprt.c31
-rw-r--r--net/sunrpc/svcauth_unix.c53
2 files changed, 39 insertions, 45 deletions
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index b845e2293dfe..1c924ee0a1ef 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -16,8 +16,6 @@
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
-#define SVC_MAX_WAKING 5
-
static struct svc_deferred_req *svc_deferred_dequeue(struct svc_xprt *xprt);
static int svc_deferred_recv(struct svc_rqst *rqstp);
static struct cache_deferred_req *svc_defer(struct cache_req *req);
@@ -306,7 +304,6 @@ void svc_xprt_enqueue(struct svc_xprt *xprt)
struct svc_pool *pool;
struct svc_rqst *rqstp;
int cpu;
- int thread_avail;
if (!(xprt->xpt_flags &
((1<<XPT_CONN)|(1<<XPT_DATA)|(1<<XPT_CLOSE)|(1<<XPT_DEFERRED))))
@@ -318,6 +315,12 @@ void svc_xprt_enqueue(struct svc_xprt *xprt)
spin_lock_bh(&pool->sp_lock);
+ if (!list_empty(&pool->sp_threads) &&
+ !list_empty(&pool->sp_sockets))
+ printk(KERN_ERR
+ "svc_xprt_enqueue: "
+ "threads and transports both waiting??\n");
+
if (test_bit(XPT_DEAD, &xprt->xpt_flags)) {
/* Don't enqueue dead transports */
dprintk("svc: transport %p is dead, not enqueued\n", xprt);
@@ -358,15 +361,7 @@ void svc_xprt_enqueue(struct svc_xprt *xprt)
}
process:
- /* Work out whether threads are available */
- thread_avail = !list_empty(&pool->sp_threads); /* threads are asleep */
- if (pool->sp_nwaking >= SVC_MAX_WAKING) {
- /* too many threads are runnable and trying to wake up */
- thread_avail = 0;
- pool->sp_stats.overloads_avoided++;
- }
-
- if (thread_avail) {
+ if (!list_empty(&pool->sp_threads)) {
rqstp = list_entry(pool->sp_threads.next,
struct svc_rqst,
rq_list);
@@ -381,8 +376,6 @@ void svc_xprt_enqueue(struct svc_xprt *xprt)
svc_xprt_get(xprt);
rqstp->rq_reserved = serv->sv_max_mesg;
atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
- rqstp->rq_waking = 1;
- pool->sp_nwaking++;
pool->sp_stats.threads_woken++;
BUG_ON(xprt->xpt_pool != pool);
wake_up(&rqstp->rq_wait);
@@ -651,11 +644,6 @@ int svc_recv(struct svc_rqst *rqstp, long timeout)
return -EINTR;
spin_lock_bh(&pool->sp_lock);
- if (rqstp->rq_waking) {
- rqstp->rq_waking = 0;
- pool->sp_nwaking--;
- BUG_ON(pool->sp_nwaking < 0);
- }
xprt = svc_xprt_dequeue(pool);
if (xprt) {
rqstp->rq_xprt = xprt;
@@ -1204,16 +1192,15 @@ static int svc_pool_stats_show(struct seq_file *m, void *p)
struct svc_pool *pool = p;
if (p == SEQ_START_TOKEN) {
- seq_puts(m, "# pool packets-arrived sockets-enqueued threads-woken overloads-avoided threads-timedout\n");
+ seq_puts(m, "# pool packets-arrived sockets-enqueued threads-woken threads-timedout\n");
return 0;
}
- seq_printf(m, "%u %lu %lu %lu %lu %lu\n",
+ seq_printf(m, "%u %lu %lu %lu %lu\n",
pool->sp_id,
pool->sp_stats.packets,
pool->sp_stats.sockets_queued,
pool->sp_stats.threads_woken,
- pool->sp_stats.overloads_avoided,
pool->sp_stats.threads_timedout);
return 0;
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 4a8f6558718a..d8c041114497 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -655,23 +655,25 @@ static struct unix_gid *unix_gid_lookup(uid_t uid)
return NULL;
}
-static int unix_gid_find(uid_t uid, struct group_info **gip,
- struct svc_rqst *rqstp)
+static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp)
{
- struct unix_gid *ug = unix_gid_lookup(uid);
+ struct unix_gid *ug;
+ struct group_info *gi;
+ int ret;
+
+ ug = unix_gid_lookup(uid);
if (!ug)
- return -EAGAIN;
- switch (cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle)) {
+ return ERR_PTR(-EAGAIN);
+ ret = cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle);
+ switch (ret) {
case -ENOENT:
- *gip = NULL;
- return 0;
+ return ERR_PTR(-ENOENT);
case 0:
- *gip = ug->gi;
- get_group_info(*gip);
+ gi = get_group_info(ug->gi);
cache_put(&ug->h, &unix_gid_cache);
- return 0;
+ return gi;
default:
- return -EAGAIN;
+ return ERR_PTR(-EAGAIN);
}
}
@@ -681,6 +683,8 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
struct sockaddr_in *sin;
struct sockaddr_in6 *sin6, sin6_storage;
struct ip_map *ipm;
+ struct group_info *gi;
+ struct svc_cred *cred = &rqstp->rq_cred;
switch (rqstp->rq_addr.ss_family) {
case AF_INET:
@@ -721,6 +725,17 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
ip_map_cached_put(rqstp, ipm);
break;
}
+
+ gi = unix_gid_find(cred->cr_uid, rqstp);
+ switch (PTR_ERR(gi)) {
+ case -EAGAIN:
+ return SVC_DROP;
+ case -ENOENT:
+ break;
+ default:
+ put_group_info(cred->cr_group_info);
+ cred->cr_group_info = gi;
+ }
return SVC_OK;
}
@@ -817,19 +832,11 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
slen = svc_getnl(argv); /* gids length */
if (slen > 16 || (len -= (slen + 2)*4) < 0)
goto badcred;
- if (unix_gid_find(cred->cr_uid, &cred->cr_group_info, rqstp)
- == -EAGAIN)
+ cred->cr_group_info = groups_alloc(slen);
+ if (cred->cr_group_info == NULL)
return SVC_DROP;
- if (cred->cr_group_info == NULL) {
- cred->cr_group_info = groups_alloc(slen);
- if (cred->cr_group_info == NULL)
- return SVC_DROP;
- for (i = 0; i < slen; i++)
- GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
- } else {
- for (i = 0; i < slen ; i++)
- svc_getnl(argv);
- }
+ for (i = 0; i < slen; i++)
+ GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
*authp = rpc_autherr_badverf;
return SVC_DENIED;