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LockD: manage garbage collection timeout per networks namespace 

This patch moves next_gc to per-net data.

Note: passed network can be NULL (when Lockd kthread is exiting of Lockd
module is removing).

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Stanislav Kinsbursky 2012-07-25 16:56:11 +04:00 committed by J. Bruce Fields
parent 27adaddc8d
commit 3cf7fb07e0
2 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
fs/lockd/host.c
View File

@ -21,6 +21,8 @@
#include <net/ipv6.h>
#include "netns.h"
#define NLMDBG_FACILITY NLMDBG_HOSTCACHE
#define NLM_HOST_NRHASH 32
#define NLM_HOST_REBIND (60 * HZ)
@ -41,7 +43,6 @@ static struct hlist_head nlm_client_hosts[NLM_HOST_NRHASH];
hlist_for_each_entry_safe((host), (pos), (next), \
(chain), h_hash)
static unsigned long next_gc;
static unsigned long nrhosts;
static DEFINE_MUTEX(nlm_host_mutex);
@ -337,6 +338,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
.hostname_len = hostname_len,
.net = net,
};
struct lockd_net *ln = net_generic(net, lockd_net_id);
dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__,
(int)hostname_len, hostname, rqstp->rq_vers,
@ -344,7 +346,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
mutex_lock(&nlm_host_mutex);
if (time_after_eq(jiffies, next_gc))
if (time_after_eq(jiffies, ln->next_gc))
nlm_gc_hosts(net);
chain = &nlm_server_hosts[nlm_hash_address(ni.sap)];
@ -653,5 +655,9 @@ nlm_gc_hosts(struct net *net)
nlm_destroy_host_locked(host);
}
next_gc = jiffies + NLM_HOST_COLLECT;
if (net) {
struct lockd_net *ln = net_generic(net, lockd_net_id);
ln->next_gc = jiffies + NLM_HOST_COLLECT;
}
}

1
fs/lockd/netns.h
View File

@ -5,6 +5,7 @@
struct lockd_net {
unsigned int nlmsvc_users;
unsigned long next_gc;
};
extern int lockd_net_id;