diff options
Diffstat (limited to 'fs/afs/proc.c')
| -rw-r--r-- | fs/afs/proc.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/fs/afs/proc.c b/fs/afs/proc.c index 08565429615d..9cf9ce88a8dd 100644 --- a/fs/afs/proc.c +++ b/fs/afs/proc.c @@ -514,23 +514,23 @@ static int afs_proc_cell_vlservers_open(struct inode *inode, struct file *file) */ static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) { + struct afs_addr_list *alist; struct afs_cell *cell = m->private; loff_t pos = *_pos; - _enter("cell=%p pos=%Ld", cell, *_pos); + rcu_read_lock(); - /* lock the list against modification */ - down_read(&cell->vl_sem); + alist = rcu_dereference(cell->vl_addrs); /* allow for the header line */ if (!pos) return (void *) 1; pos--; - if (pos >= cell->vl_naddrs) + if (!alist || pos >= alist->nr_addrs) return NULL; - return &cell->vl_addrs[pos]; + return alist->addrs + pos; } /* @@ -539,17 +539,18 @@ static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) static void *afs_proc_cell_vlservers_next(struct seq_file *p, void *v, loff_t *_pos) { + struct afs_addr_list *alist; struct afs_cell *cell = p->private; loff_t pos; - _enter("cell=%p{nad=%u} pos=%Ld", cell, cell->vl_naddrs, *_pos); + alist = rcu_dereference(cell->vl_addrs); pos = *_pos; (*_pos)++; - if (pos >= cell->vl_naddrs) + if (!alist || pos >= alist->nr_addrs) return NULL; - return &cell->vl_addrs[pos]; + return alist->addrs + pos; } /* @@ -557,9 +558,7 @@ static void *afs_proc_cell_vlservers_next(struct seq_file *p, void *v, */ static void afs_proc_cell_vlservers_stop(struct seq_file *p, void *v) { - struct afs_cell *cell = p->private; - - up_read(&cell->vl_sem); + rcu_read_unlock(); } /* @@ -658,7 +657,7 @@ static int afs_proc_cell_servers_show(struct seq_file *m, void *v) } /* display one cell per line on subsequent lines */ - sprintf(ipaddr, "%pISp", &server->addr.transport); + sprintf(ipaddr, "%pISp", &server->addrs->addrs[0].transport); seq_printf(m, "%3d %-15s %5d\n", atomic_read(&server->usage), ipaddr, server->fs_state); |