diff options
| -rw-r--r-- | fs/lockd/clntlock.c | 15 | ||||
| -rw-r--r-- | fs/lockd/clntproc.c | 13 |
2 files changed, 14 insertions, 14 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 64fd427c993c..d5bb86866e6c 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -42,6 +42,7 @@ struct nlm_wait { }; static LIST_HEAD(nlm_blocked); +static DEFINE_SPINLOCK(nlm_blocked_lock); /** * nlmclnt_init - Set up per-NFS mount point lockd data structures @@ -97,7 +98,10 @@ struct nlm_wait *nlmclnt_prepare_block(struct nlm_host *host, struct file_lock * block->b_lock = fl; init_waitqueue_head(&block->b_wait); block->b_status = nlm_lck_blocked; + + spin_lock(&nlm_blocked_lock); list_add(&block->b_list, &nlm_blocked); + spin_unlock(&nlm_blocked_lock); } return block; } @@ -106,7 +110,9 @@ void nlmclnt_finish_block(struct nlm_wait *block) { if (block == NULL) return; + spin_lock(&nlm_blocked_lock); list_del(&block->b_list); + spin_unlock(&nlm_blocked_lock); kfree(block); } @@ -154,6 +160,7 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock) * Look up blocked request based on arguments. * Warning: must not use cookie to match it! */ + spin_lock(&nlm_blocked_lock); list_for_each_entry(block, &nlm_blocked, b_list) { struct file_lock *fl_blocked = block->b_lock; @@ -178,6 +185,7 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock) wake_up(&block->b_wait); res = nlm_granted; } + spin_unlock(&nlm_blocked_lock); return res; } @@ -216,10 +224,6 @@ reclaimer(void *ptr) allow_signal(SIGKILL); down_write(&host->h_rwsem); - - /* This one ensures that our parent doesn't terminate while the - * reclaim is in progress */ - lock_kernel(); lockd_up(); /* note: this cannot fail as lockd is already running */ dprintk("lockd: reclaiming locks for host %s\n", host->h_name); @@ -260,16 +264,17 @@ restart: dprintk("NLM: done reclaiming locks for host %s\n", host->h_name); /* Now, wake up all processes that sleep on a blocked lock */ + spin_lock(&nlm_blocked_lock); list_for_each_entry(block, &nlm_blocked, b_list) { if (block->b_host == host) { block->b_status = nlm_lck_denied_grace_period; wake_up(&block->b_wait); } } + spin_unlock(&nlm_blocked_lock); /* Release host handle after use */ nlm_release_host(host); lockd_down(); - unlock_kernel(); return 0; } diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 7932c399fab4..47ea1e1925b8 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -166,7 +166,6 @@ int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl) /* Set up the argument struct */ nlmclnt_setlockargs(call, fl); - lock_kernel(); if (IS_SETLK(cmd) || IS_SETLKW(cmd)) { if (fl->fl_type != F_UNLCK) { call->a_args.block = IS_SETLKW(cmd) ? 1 : 0; @@ -177,10 +176,8 @@ int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl) status = nlmclnt_test(call, fl); else status = -EINVAL; - fl->fl_ops->fl_release_private(fl); fl->fl_ops = NULL; - unlock_kernel(); dprintk("lockd: clnt proc returns %d\n", status); return status; @@ -226,9 +223,7 @@ void nlm_release_call(struct nlm_rqst *call) static void nlmclnt_rpc_release(void *data) { - lock_kernel(); nlm_release_call(data); - unlock_kernel(); } static int nlm_wait_on_grace(wait_queue_head_t *queue) @@ -448,14 +443,18 @@ out: static void nlmclnt_locks_copy_lock(struct file_lock *new, struct file_lock *fl) { + spin_lock(&fl->fl_u.nfs_fl.owner->host->h_lock); new->fl_u.nfs_fl.state = fl->fl_u.nfs_fl.state; new->fl_u.nfs_fl.owner = nlm_get_lockowner(fl->fl_u.nfs_fl.owner); list_add_tail(&new->fl_u.nfs_fl.list, &fl->fl_u.nfs_fl.owner->host->h_granted); + spin_unlock(&fl->fl_u.nfs_fl.owner->host->h_lock); } static void nlmclnt_locks_release_private(struct file_lock *fl) { + spin_lock(&fl->fl_u.nfs_fl.owner->host->h_lock); list_del(&fl->fl_u.nfs_fl.list); + spin_unlock(&fl->fl_u.nfs_fl.owner->host->h_lock); nlm_put_lockowner(fl->fl_u.nfs_fl.owner); } @@ -721,9 +720,7 @@ static void nlmclnt_unlock_callback(struct rpc_task *task, void *data) die: return; retry_rebind: - lock_kernel(); nlm_rebind_host(req->a_host); - unlock_kernel(); retry_unlock: rpc_restart_call(task); } @@ -801,9 +798,7 @@ retry_cancel: /* Don't ever retry more than 3 times */ if (req->a_retries++ >= NLMCLNT_MAX_RETRIES) goto die; - lock_kernel(); nlm_rebind_host(req->a_host); - unlock_kernel(); rpc_restart_call(task); rpc_delay(task, 30 * HZ); } |