diff options
| -rw-r--r-- | fs/Kconfig | 6 | ||||
| -rw-r--r-- | fs/lockd/Makefile | 2 | ||||
| -rw-r--r-- | fs/lockd/netns.h | 1 | ||||
| -rw-r--r-- | fs/lockd/svc.c | 2 | ||||
| -rw-r--r-- | fs/nfs_common/Makefile | 3 | ||||
| -rw-r--r-- | fs/nfs_common/grace.c (renamed from fs/lockd/grace.c) | 68 | ||||
| -rw-r--r-- | fs/nfsd/Kconfig | 1 | ||||
| -rw-r--r-- | include/linux/proc_fs.h | 2 |
8 files changed, 70 insertions, 15 deletions
@@ -233,9 +233,13 @@ if NETWORK_FILESYSTEMS source "fs/nfs/Kconfig" source "fs/nfsd/Kconfig" +config GRACE_PERIOD + tristate + config LOCKD tristate depends on FILE_LOCKING + select GRACE_PERIOD config LOCKD_V4 bool @@ -249,7 +253,7 @@ config NFS_ACL_SUPPORT config NFS_COMMON bool - depends on NFSD || NFS_FS + depends on NFSD || NFS_FS || LOCKD default y source "net/sunrpc/Kconfig" diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile index ca58d64..6a0b351 100644 --- a/fs/lockd/Makefile +++ b/fs/lockd/Makefile @@ -5,6 +5,6 @@ obj-$(CONFIG_LOCKD) += lockd.o lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \ - svcshare.o svcproc.o svcsubs.o mon.o xdr.o grace.o + svcshare.o svcproc.o svcsubs.o mon.o xdr.o lockd-objs-$(CONFIG_LOCKD_V4) += clnt4xdr.o xdr4.o svc4proc.o lockd-objs := $(lockd-objs-y) diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h index 5010b55..097bfa3 100644 --- a/fs/lockd/netns.h +++ b/fs/lockd/netns.h @@ -11,7 +11,6 @@ struct lockd_net { struct delayed_work grace_period_end; struct lock_manager lockd_manager; - struct list_head grace_list; spinlock_t nsm_clnt_lock; unsigned int nsm_users; diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 09857b4..266b679 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -586,7 +586,7 @@ static int lockd_init_net(struct net *net) struct lockd_net *ln = net_generic(net, lockd_net_id); INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender); - INIT_LIST_HEAD(&ln->grace_list); + INIT_LIST_HEAD(&ln->lockd_manager.list); spin_lock_init(&ln->nsm_clnt_lock); return 0; } diff --git a/fs/nfs_common/Makefile b/fs/nfs_common/Makefile index f689ed8..d153ca3 100644 --- a/fs/nfs_common/Makefile +++ b/fs/nfs_common/Makefile @@ -3,5 +3,6 @@ # obj-$(CONFIG_NFS_ACL_SUPPORT) += nfs_acl.o - nfs_acl-objs := nfsacl.o + +obj-$(CONFIG_GRACE_PERIOD) += grace.o diff --git a/fs/lockd/grace.c b/fs/nfs_common/grace.c index 6d1ee72..ae6e58e 100644 --- a/fs/lockd/grace.c +++ b/fs/nfs_common/grace.c @@ -1,17 +1,20 @@ /* * Common code for control of lockd and nfsv4 grace periods. + * + * Transplanted from lockd code */ #include <linux/module.h> -#include <linux/lockd/bind.h> #include <net/net_namespace.h> +#include <net/netns/generic.h> +#include <linux/fs.h> -#include "netns.h" - +static int grace_net_id; static DEFINE_SPINLOCK(grace_lock); /** * locks_start_grace + * @net: net namespace that this lock manager belongs to * @lm: who this grace period is for * * A grace period is a period during which locks should not be given @@ -21,18 +24,20 @@ static DEFINE_SPINLOCK(grace_lock); * * This function is called to start a grace period. */ -void locks_start_grace(struct net *net, struct lock_manager *lm) +void +locks_start_grace(struct net *net, struct lock_manager *lm) { - struct lockd_net *ln = net_generic(net, lockd_net_id); + struct list_head *grace_list = net_generic(net, grace_net_id); spin_lock(&grace_lock); - list_add(&lm->list, &ln->grace_list); + list_add(&lm->list, grace_list); spin_unlock(&grace_lock); } EXPORT_SYMBOL_GPL(locks_start_grace); /** * locks_end_grace + * @net: net namespace that this lock manager belongs to * @lm: who this grace period is for * * Call this function to state that the given lock manager is ready to @@ -41,7 +46,8 @@ EXPORT_SYMBOL_GPL(locks_start_grace); * Note that callers count on it being safe to call this more than once, * and the second call should be a no-op. */ -void locks_end_grace(struct lock_manager *lm) +void +locks_end_grace(struct lock_manager *lm) { spin_lock(&grace_lock); list_del_init(&lm->list); @@ -56,10 +62,52 @@ EXPORT_SYMBOL_GPL(locks_end_grace); * to answer ordinary lock requests, and when they should accept only * lock reclaims. */ -int locks_in_grace(struct net *net) +int +locks_in_grace(struct net *net) { - struct lockd_net *ln = net_generic(net, lockd_net_id); + struct list_head *grace_list = net_generic(net, grace_net_id); - return !list_empty(&ln->grace_list); + return !list_empty(grace_list); } EXPORT_SYMBOL_GPL(locks_in_grace); + +static int __net_init +grace_init_net(struct net *net) +{ + struct list_head *grace_list = net_generic(net, grace_net_id); + + INIT_LIST_HEAD(grace_list); + return 0; +} + +static void __net_exit +grace_exit_net(struct net *net) +{ + struct list_head *grace_list = net_generic(net, grace_net_id); + + BUG_ON(!list_empty(grace_list)); +} + +static struct pernet_operations grace_net_ops = { + .init = grace_init_net, + .exit = grace_exit_net, + .id = &grace_net_id, + .size = sizeof(struct list_head), +}; + +static int __init +init_grace(void) +{ + return register_pernet_subsys(&grace_net_ops); +} + +static void __exit +exit_grace(void) +{ + unregister_pernet_subsys(&grace_net_ops); +} + +MODULE_AUTHOR("Jeff Layton <jlayton@primarydata.com>"); +MODULE_LICENSE("GPL"); +module_init(init_grace) +module_exit(exit_grace) diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index f3586b6..7339515 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -71,6 +71,7 @@ config NFSD_V4 select FS_POSIX_ACL select SUNRPC_GSS select CRYPTO + select GRACE_PERIOD help This option enables support in your system's NFS server for version 4 of the NFS protocol (RFC 3530). diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 9d117f6..b97bf2e 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -74,6 +74,8 @@ static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *p #endif /* CONFIG_PROC_FS */ +struct net; + static inline struct proc_dir_entry *proc_net_mkdir( struct net *net, const char *name, struct proc_dir_entry *parent) { |