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LockD: manage grace list per network namespace 

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 16:57:13 +04:00 committed by J. Bruce Fields
parent 9695c7057f
commit db9c455341
3 changed files with 13 additions and 3 deletions
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14
fs/lockd/grace.c
View File

@ -4,8 +4,10 @@
#include <linux/module.h>
#include <linux/lockd/bind.h>
#include <net/net_namespace.h>
#include "netns.h"
static LIST_HEAD(grace_list);
static DEFINE_SPINLOCK(grace_lock);
/**
@ -21,8 +23,11 @@ static DEFINE_SPINLOCK(grace_lock);
*/
void locks_start_grace(struct lock_manager *lm)
{
struct net *net = &init_net;
struct lockd_net *ln = net_generic(net, lockd_net_id);
spin_lock(&grace_lock);
list_add(&lm->list, &grace_list);
list_add(&lm->list, &ln->grace_list);
spin_unlock(&grace_lock);
}
EXPORT_SYMBOL_GPL(locks_start_grace);
@ -54,6 +59,9 @@ EXPORT_SYMBOL_GPL(locks_end_grace);
*/
int locks_in_grace(void)
{
return !list_empty(&grace_list);
struct net *net = &init_net;
struct lockd_net *ln = net_generic(net, lockd_net_id);
return !list_empty(&ln->grace_list);
}
EXPORT_SYMBOL_GPL(locks_in_grace);

1
fs/lockd/netns.h
View File

@ -11,6 +11,7 @@ struct lockd_net {
struct delayed_work grace_period_end;
struct lock_manager lockd_manager;
struct list_head grace_list;
};
extern int lockd_net_id;

1
fs/lockd/svc.c
View File

@ -596,6 +596,7 @@ static int lockd_init_net(struct net *net)
struct lockd_net *ln = net_generic(net, lockd_net_id);
INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
INIT_LIST_HEAD(&ln->grace_list);
return 0;
}