diff options
| -rw-r--r-- | fs/dlm/debug_fs.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index 8f471d9a9e3..9c3aeddc866 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -310,16 +310,19 @@ static ssize_t waiters_read(struct file *file, char __user *userbuf, { struct dlm_ls *ls = file->private_data; struct dlm_lkb *lkb; - size_t len = DLM_DEBUG_BUF_LEN, pos = 0, rv; + size_t len = DLM_DEBUG_BUF_LEN, pos = 0, ret, rv; mutex_lock(&debug_buf_lock); mutex_lock(&ls->ls_waiters_mutex); memset(debug_buf, 0, sizeof(debug_buf)); list_for_each_entry(lkb, &ls->ls_waiters, lkb_wait_reply) { - pos += snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n", - lkb->lkb_id, lkb->lkb_wait_type, - lkb->lkb_nodeid, lkb->lkb_resource->res_name); + ret = snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n", + lkb->lkb_id, lkb->lkb_wait_type, + lkb->lkb_nodeid, lkb->lkb_resource->res_name); + if (ret >= len - pos) + break; + pos += ret; } mutex_unlock(&ls->ls_waiters_mutex); |